10-Q Filing

INTERDIGITAL, INC. CIK: 1405495 Q3 2024

Filing Information

Form Type	10-Q
Accession Number	`0001405495-24-000117`
Period End Date	20240930
Filing Date	20241031
Fiscal Year	2024
Fiscal Period	Q3
XBRL Instance	idcc-20240930_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 160 Income Statement 164 Cash Flow Statement 136 Stockholders Equity 172 Comprehensive Income 48

Balance Sheet 160 line items

Line Item	Tag	Value	Unit	Period
Preferred stock, par value (in USD per share)	`PreferredStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Preferred stock, par value (in USD per share)	`PreferredStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Preferred stock, par value (in USD per share)	`PreferredStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Preferred stock, par value (in USD per share)	`PreferredStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$401.09M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$401.09M	USD	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	14.40M	shares	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	14.40M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$437.08M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$437.08M	USD	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	14.40M	shares	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	14.40M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$518.48M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$518.48M	USD	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Short-term investments	`ShortTermInvestments`	$412.12M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$412.12M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$569.28M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$569.28M	USD	Point-in-time
Accounts receivable	`AccountsReceivableNetCurrent`	$212.42M	USD	Point-in-time
Accounts receivable	`AccountsReceivableNetCurrent`	$212.42M	USD	Point-in-time
Accounts receivable	`AccountsReceivableNetCurrent`	$117.29M	USD	Point-in-time
Accounts receivable	`AccountsReceivableNetCurrent`	$117.29M	USD	Point-in-time
Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Common stock, par value (in USD per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in USD per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$43.98M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$43.98M	USD	Point-in-time
Common stock, par value (in USD per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in USD per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$128.11M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$128.11M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.15B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.15B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.17B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.17B	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	70.14M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	70.14M	shares	Point-in-time
Property and equipment, net	`PropertyPlantAndEquipmentNet`	$10.87M	USD	Point-in-time
Property and equipment, net	`PropertyPlantAndEquipmentNet`	$10.87M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	69.51M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	69.51M	shares	Point-in-time
Property and equipment, net	`PropertyPlantAndEquipmentNet`	$11.57M	USD	Point-in-time
Property and equipment, net	`PropertyPlantAndEquipmentNet`	$11.57M	USD	Point-in-time
Patents, net	`FiniteLivedPatentsNet`	$299.57M	USD	Point-in-time
Patents, net	`FiniteLivedPatentsNet`	$299.57M	USD	Point-in-time
Patents, net	`FiniteLivedPatentsNet`	$313.00M	USD	Point-in-time
Patents, net	`FiniteLivedPatentsNet`	$313.00M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	25.58M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	25.58M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	25.24M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	25.24M	shares	Point-in-time
Treasury stock, shares of common held at cost (in shares)	`TreasuryStockCommonShares`	43.93M	shares	Point-in-time
Treasury stock, shares of common held at cost (in shares)	`TreasuryStockCommonShares`	43.93M	shares	Point-in-time
Treasury stock, shares of common held at cost (in shares)	`TreasuryStockCommonShares`	44.90M	shares	Point-in-time
Treasury stock, shares of common held at cost (in shares)	`TreasuryStockCommonShares`	44.90M	shares	Point-in-time
Deferred tax assets	`DeferredIncomeTaxAssetsNet`	$128.97M	USD	Point-in-time
Deferred tax assets	`DeferredIncomeTaxAssetsNet`	$128.97M	USD	Point-in-time
Deferred tax assets	`DeferredIncomeTaxAssetsNet`	$110.74M	USD	Point-in-time
Deferred tax assets	`DeferredIncomeTaxAssetsNet`	$110.74M	USD	Point-in-time
Other non-current assets, net	`OtherAssetsNoncurrent`	$150.44M	USD	Point-in-time
Other non-current assets, net	`OtherAssetsNoncurrent`	$150.44M	USD	Point-in-time
Other non-current assets, net	`OtherAssetsNoncurrent`	$149.66M	USD	Point-in-time
Other non-current assets, net	`OtherAssetsNoncurrent`	$149.66M	USD	Point-in-time
Total assets	`Assets`	$1.77B	USD	Point-in-time
Total assets	`Assets`	$1.77B	USD	Point-in-time
Total assets	`Assets`	$1.73B	USD	Point-in-time
Total assets	`Assets`	$1.73B	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$578.75M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$578.75M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$454.25M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$454.25M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrentAndNoncurrent`	$7.85M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrentAndNoncurrent`	$7.85M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrentAndNoncurrent`	$8.02M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrentAndNoncurrent`	$8.02M	USD	Point-in-time
Accrued compensation and related expenses	`EmployeeRelatedLiabilitiesCurrent`	$38.97M	USD	Point-in-time
Accrued compensation and related expenses	`EmployeeRelatedLiabilitiesCurrent`	$38.97M	USD	Point-in-time
Accrued compensation and related expenses	`EmployeeRelatedLiabilitiesCurrent`	$32.66M	USD	Point-in-time
Accrued compensation and related expenses	`EmployeeRelatedLiabilitiesCurrent`	$32.66M	USD	Point-in-time
Deferred revenue	`ContractWithCustomerLiabilityCurrent`	$153.60M	USD	Point-in-time
Deferred revenue	`ContractWithCustomerLiabilityCurrent`	$153.60M	USD	Point-in-time
Deferred revenue	`ContractWithCustomerLiabilityCurrent`	$156.88M	USD	Point-in-time
Deferred revenue	`ContractWithCustomerLiabilityCurrent`	$156.88M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$10.35M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$10.35M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$10.23M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$10.23M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$11.37M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$11.37M	USD	Point-in-time
Other accrued expenses	`AccruedLiabilitiesCurrent`	$42.29M	USD	Point-in-time
Other accrued expenses	`AccruedLiabilitiesCurrent`	$42.29M	USD	Point-in-time
Other accrued expenses	`AccruedLiabilitiesCurrent`	$98.04M	USD	Point-in-time
Other accrued expenses	`AccruedLiabilitiesCurrent`	$98.04M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$881.13M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$881.13M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$711.77M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$711.77M	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$29.02M	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$29.02M	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$18.30M	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$18.30M	USD	Point-in-time
Long-term deferred revenue	`ContractWithCustomerLiabilityNoncurrent`	$216.66M	USD	Point-in-time
Long-term deferred revenue	`ContractWithCustomerLiabilityNoncurrent`	$216.66M	USD	Point-in-time
Long-term deferred revenue	`ContractWithCustomerLiabilityNoncurrent`	$223.87M	USD	Point-in-time
Long-term deferred revenue	`ContractWithCustomerLiabilityNoncurrent`	$223.87M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$56.08M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$56.08M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$55.25M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$55.25M	USD	Point-in-time
Total liabilities	`Liabilities`	$1.00B	USD	Point-in-time
Total liabilities	`Liabilities`	$1.00B	USD	Point-in-time
Total liabilities	`Liabilities`	$1.19B	USD	Point-in-time
Total liabilities	`Liabilities`	$1.19B	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Preferred Stock, $0.10 par value, 14,399 shares authorized, 0 shares issued and outstanding	`PreferredStockValue`	-	USD	Point-in-time
Preferred Stock, $0.10 par value, 14,399 shares authorized, 0 shares issued and outstanding	`PreferredStockValue`	-	USD	Point-in-time
Preferred Stock, $0.10 par value, 14,399 shares authorized, 0 shares issued and outstanding	`PreferredStockValue`	-	USD	Point-in-time
Preferred Stock, $0.10 par value, 14,399 shares authorized, 0 shares issued and outstanding	`PreferredStockValue`	-	USD	Point-in-time
Common Stock, $0.01 par value, 100,000 shares authorized, 70,137 and 69,507 shares issued and 25,242 and 25,580 shares outstanding	`CommonStockValue`	$694.00K	USD	Point-in-time
Common Stock, $0.01 par value, 100,000 shares authorized, 70,137 and 69,507 shares issued and 25,242 and 25,580 shares outstanding	`CommonStockValue`	$694.00K	USD	Point-in-time
Common Stock, $0.01 par value, 100,000 shares authorized, 70,137 and 69,507 shares issued and 25,242 and 25,580 shares outstanding	`CommonStockValue`	$701.00K	USD	Point-in-time
Common Stock, $0.01 par value, 100,000 shares authorized, 70,137 and 69,507 shares issued and 25,242 and 25,580 shares outstanding	`CommonStockValue`	$701.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$742.98M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$742.98M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$794.64M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$794.64M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.65B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.65B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.46B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.46B	USD	Point-in-time
Accumulated other comprehensive gain (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-647.00K	USD	Point-in-time
Accumulated other comprehensive gain (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-647.00K	USD	Point-in-time
Accumulated other comprehensive gain (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$134.00K	USD	Point-in-time
Accumulated other comprehensive gain (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$134.00K	USD	Point-in-time
Treasury stock, 44,895 and 43,927 shares of common stock held at cost	`TreasuryStockCommonValue`	$1.62B	USD	Point-in-time
Treasury stock, 44,895 and 43,927 shares of common stock held at cost	`TreasuryStockCommonValue`	$1.62B	USD	Point-in-time
Treasury stock, 44,895 and 43,927 shares of common stock held at cost	`TreasuryStockCommonValue`	$1.73B	USD	Point-in-time
Treasury stock, 44,895 and 43,927 shares of common stock held at cost	`TreasuryStockCommonValue`	$1.73B	USD	Point-in-time
Total shareholders' equity	`StockholdersEquity`	$722.54M	USD	Point-in-time
Total shareholders' equity	`StockholdersEquity`	$722.54M	USD	Point-in-time
Total shareholders' equity	`StockholdersEquity`	$581.55M	USD	Point-in-time
Total shareholders' equity	`StockholdersEquity`	$581.55M	USD	Point-in-time
Total liabilities and shareholders' equity	`LiabilitiesAndStockholdersEquity`	$1.77B	USD	Point-in-time
Total liabilities and shareholders' equity	`LiabilitiesAndStockholdersEquity`	$1.77B	USD	Point-in-time
Total liabilities and shareholders' equity	`LiabilitiesAndStockholdersEquity`	$1.73B	USD	Point-in-time
Total liabilities and shareholders' equity	`LiabilitiesAndStockholdersEquity`	$1.73B	USD	Point-in-time

Income Statement 164 line items

Line Item	Tag	Value	Unit	Period
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$128.68M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$128.68M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$140.11M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$140.11M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$444.07M	USD	3 Qtrs
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$444.07M	USD	3 Qtrs
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$615.71M	USD	3 Qtrs
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$615.71M	USD	3 Qtrs
Research and portfolio development	`ResearchAndPortfolioDevelopmentExpense`	$48.33M	USD	1 Quarter
Research and portfolio development	`ResearchAndPortfolioDevelopmentExpense`	$48.33M	USD	1 Quarter
Research and portfolio development	`ResearchAndPortfolioDevelopmentExpense`	$50.25M	USD	1 Quarter
Research and portfolio development	`ResearchAndPortfolioDevelopmentExpense`	$50.25M	USD	1 Quarter
Research and portfolio development	`ResearchAndPortfolioDevelopmentExpense`	$147.85M	USD	3 Qtrs
Research and portfolio development	`ResearchAndPortfolioDevelopmentExpense`	$147.85M	USD	3 Qtrs
Research and portfolio development	`ResearchAndPortfolioDevelopmentExpense`	$149.56M	USD	3 Qtrs
Research and portfolio development	`ResearchAndPortfolioDevelopmentExpense`	$149.56M	USD	3 Qtrs
Licensing	`LicensingCosts`	$149.21M	USD	3 Qtrs
Licensing	`LicensingCosts`	$149.21M	USD	3 Qtrs
Licensing	`LicensingCosts`	$27.47M	USD	1 Quarter
Licensing	`LicensingCosts`	$27.47M	USD	1 Quarter
Licensing	`LicensingCosts`	$21.52M	USD	1 Quarter
Licensing	`LicensingCosts`	$21.52M	USD	1 Quarter
Licensing	`LicensingCosts`	$59.53M	USD	3 Qtrs
Licensing	`LicensingCosts`	$59.53M	USD	3 Qtrs
General and administrative	`GeneralAndAdministrativeExpense`	$13.54M	USD	1 Quarter
General and administrative	`GeneralAndAdministrativeExpense`	$13.54M	USD	1 Quarter
General and administrative	`GeneralAndAdministrativeExpense`	$38.69M	USD	3 Qtrs
General and administrative	`GeneralAndAdministrativeExpense`	$38.69M	USD	3 Qtrs
General and administrative	`GeneralAndAdministrativeExpense`	$14.68M	USD	1 Quarter
General and administrative	`GeneralAndAdministrativeExpense`	$14.68M	USD	1 Quarter
General and administrative	`GeneralAndAdministrativeExpense`	$41.66M	USD	3 Qtrs
General and administrative	`GeneralAndAdministrativeExpense`	$41.66M	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$247.78M	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$247.78M	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$86.45M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$86.45M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$89.34M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$89.34M	USD	1 Quarter
Total operating expenses	`CostsAndExpenses`	$338.73M	USD	3 Qtrs
Total operating expenses	`CostsAndExpenses`	$338.73M	USD	3 Qtrs
Income from operations	`OperatingIncomeLoss`	$276.99M	USD	3 Qtrs
Income from operations	`OperatingIncomeLoss`	$276.99M	USD	3 Qtrs
Income from operations	`OperatingIncomeLoss`	$53.65M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$53.65M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$196.29M	USD	3 Qtrs
Income from operations	`OperatingIncomeLoss`	$196.29M	USD	3 Qtrs
Income from operations	`OperatingIncomeLoss`	$39.34M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$39.34M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$36.91M	USD	3 Qtrs
Interest expense	`InterestExpenseNonoperating`	$36.91M	USD	3 Qtrs
Interest expense	`InterestExpenseNonoperating`	$10.68M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$10.68M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$12.68M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$12.68M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$34.09M	USD	3 Qtrs
Interest expense	`InterestExpenseNonoperating`	$34.09M	USD	3 Qtrs
Other income, net	`OtherNonoperatingIncomeExpense`	$12.55M	USD	1 Quarter
Other income, net	`OtherNonoperatingIncomeExpense`	$12.55M	USD	1 Quarter
Other income, net	`OtherNonoperatingIncomeExpense`	$14.72M	USD	1 Quarter
Other income, net	`OtherNonoperatingIncomeExpense`	$14.72M	USD	1 Quarter
Other income, net	`OtherNonoperatingIncomeExpense`	$42.30M	USD	3 Qtrs
Other income, net	`OtherNonoperatingIncomeExpense`	$42.30M	USD	3 Qtrs
Other income, net	`OtherNonoperatingIncomeExpense`	$33.48M	USD	3 Qtrs
Other income, net	`OtherNonoperatingIncomeExpense`	$33.48M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$276.38M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$276.38M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$201.68M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$201.68M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$55.70M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$55.70M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$41.22M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$41.22M	USD	1 Quarter
Income tax provision	`IncomeTaxExpenseBenefit`	$7.03M	USD	1 Quarter
Income tax provision	`IncomeTaxExpenseBenefit`	$7.03M	USD	1 Quarter
Income tax provision	`IncomeTaxExpenseBenefit`	$50.88M	USD	3 Qtrs
Income tax provision	`IncomeTaxExpenseBenefit`	$50.88M	USD	3 Qtrs
Income tax provision	`IncomeTaxExpenseBenefit`	$29.71M	USD	3 Qtrs
Income tax provision	`IncomeTaxExpenseBenefit`	$29.71M	USD	3 Qtrs
Income tax provision	`IncomeTaxExpenseBenefit`	$8.54M	USD	1 Quarter
Income tax provision	`IncomeTaxExpenseBenefit`	$8.54M	USD	1 Quarter
Net income	`ProfitLoss`	$34.19M	USD	1 Quarter
Net income	`ProfitLoss`	$34.19M	USD	1 Quarter
Net income	`ProfitLoss`	$171.97M	USD	3 Qtrs
Net income	`ProfitLoss`	$171.97M	USD	3 Qtrs
Net income	`ProfitLoss`	$47.15M	USD	1 Quarter
Net income	`ProfitLoss`	$47.15M	USD	1 Quarter
Net income	`ProfitLoss`	$225.51M	USD	3 Qtrs
Net income	`ProfitLoss`	$225.51M	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-3.02M	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-3.02M	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-787.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-787.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-490.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-490.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-1.74M	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-1.74M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$47.94M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$47.94M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$21.78M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$21.78M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$109.66M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$109.66M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$105.26M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$105.26M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$81.65M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$81.65M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$174.98M	USD	3 Qtrs
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$174.98M	USD	3 Qtrs
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$34.19M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$34.19M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$225.51M	USD	3 Qtrs
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$225.51M	USD	3 Qtrs
Net income per common share Basic (in USD per share)	`EarningsPerShareBasic`	$8.92	USD	3 Qtrs
Net income per common share Basic (in USD per share)	`EarningsPerShareBasic`	$8.92	USD	3 Qtrs
Net income per common share Basic (in USD per share)	`EarningsPerShareBasic`	$6.42	USD	3 Qtrs
Net income per common share Basic (in USD per share)	`EarningsPerShareBasic`	$6.42	USD	3 Qtrs
Net income per common share Basic (in USD per share)	`EarningsPerShareBasic`	$1.82	USD	1 Quarter
Net income per common share Basic (in USD per share)	`EarningsPerShareBasic`	$1.82	USD	1 Quarter
Net income per common share Basic (in USD per share)	`EarningsPerShareBasic`	$1.36	USD	1 Quarter
Net income per common share Basic (in USD per share)	`EarningsPerShareBasic`	$1.36	USD	1 Quarter
Weighted average number of common shares outstanding Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	27.26M	shares	3 Qtrs
Weighted average number of common shares outstanding Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	27.26M	shares	3 Qtrs
Weighted average number of common shares outstanding Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	26.29M	shares	1 Quarter
Weighted average number of common shares outstanding Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	26.29M	shares	1 Quarter
Weighted average number of common shares outstanding Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	25.29M	shares	3 Qtrs
Weighted average number of common shares outstanding Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	25.29M	shares	3 Qtrs
Weighted average number of common shares outstanding Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	25.15M	shares	1 Quarter
Weighted average number of common shares outstanding Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	25.15M	shares	1 Quarter
Net income per common share Diluted (in USD per share)	`EarningsPerShareDiluted`	$7.84	USD	3 Qtrs
Net income per common share Diluted (in USD per share)	`EarningsPerShareDiluted`	$7.84	USD	3 Qtrs
Net income per common share Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.14	USD	1 Quarter
Net income per common share Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.14	USD	1 Quarter
Net income per common share Diluted (in USD per share)	`EarningsPerShareDiluted`	$6.19	USD	3 Qtrs
Net income per common share Diluted (in USD per share)	`EarningsPerShareDiluted`	$6.19	USD	3 Qtrs
Net income per common share Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.72	USD	1 Quarter
Net income per common share Diluted (in USD per share)	`EarningsPerShareDiluted`	$1.72	USD	1 Quarter
Weighted average number of common shares outstanding Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	27.81M	shares	1 Quarter
Weighted average number of common shares outstanding Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	27.81M	shares	1 Quarter
Weighted average number of common shares outstanding Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	28.76M	shares	3 Qtrs
Weighted average number of common shares outstanding Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	28.76M	shares	3 Qtrs
Weighted average number of common shares outstanding Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	28.26M	shares	3 Qtrs
Weighted average number of common shares outstanding Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	28.26M	shares	3 Qtrs
Weighted average number of common shares outstanding Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	30.03M	shares	1 Quarter
Weighted average number of common shares outstanding Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	30.03M	shares	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.35	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.35	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.45	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.45	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.35	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.35	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.10	USD	3 Qtrs
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.10	USD	3 Qtrs
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.25	USD	3 Qtrs
Cash dividends declared per common share (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.25	USD	3 Qtrs

Cash Flow Statement 136 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$34.19M	USD	1 Quarter
Net income	`ProfitLoss`	$34.19M	USD	1 Quarter
Net income	`ProfitLoss`	$171.97M	USD	3 Qtrs
Net income	`ProfitLoss`	$171.97M	USD	3 Qtrs
Net income	`ProfitLoss`	$47.15M	USD	1 Quarter
Net income	`ProfitLoss`	$47.15M	USD	1 Quarter
Net income	`ProfitLoss`	$225.51M	USD	3 Qtrs
Net income	`ProfitLoss`	$225.51M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$52.16M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$52.16M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$58.70M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$58.70M	USD	3 Qtrs
Non-cash interest income, net	`NonCashInterestIncomeExpenseNet`	$-8.29M	USD	3 Qtrs
Non-cash interest income, net	`NonCashInterestIncomeExpenseNet`	$-8.29M	USD	3 Qtrs
Non-cash interest income, net	`NonCashInterestIncomeExpenseNet`	$-9.80M	USD	3 Qtrs
Non-cash interest income, net	`NonCashInterestIncomeExpenseNet`	$-9.80M	USD	3 Qtrs
Non-cash change in investments	`NonCashChangeInInvestments`	$329.00K	USD	3 Qtrs
Non-cash change in investments	`NonCashChangeInInvestments`	$329.00K	USD	3 Qtrs
Non-cash change in investments	`NonCashChangeInInvestments`	$-9.37M	USD	3 Qtrs
Non-cash change in investments	`NonCashChangeInInvestments`	$-9.37M	USD	3 Qtrs
Change in deferred revenue	`IncreaseDecreaseInDeferredRevenue`	$-3.91M	USD	3 Qtrs
Change in deferred revenue	`IncreaseDecreaseInDeferredRevenue`	$-3.91M	USD	3 Qtrs
Change in deferred revenue	`IncreaseDecreaseInDeferredRevenue`	$-3.93M	USD	3 Qtrs
Change in deferred revenue	`IncreaseDecreaseInDeferredRevenue`	$-3.93M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-18.02M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-18.02M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-2.63M	USD	3 Qtrs
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-2.63M	USD	3 Qtrs
Share-based compensation	`ShareBasedCompensation`	$26.86M	USD	3 Qtrs
Share-based compensation	`ShareBasedCompensation`	$26.86M	USD	3 Qtrs
Share-based compensation	`ShareBasedCompensation`	$28.12M	USD	3 Qtrs
Share-based compensation	`ShareBasedCompensation`	$28.12M	USD	3 Qtrs
Other	`OtherOperatingActivitiesCashFlowStatement`	$2.62M	USD	3 Qtrs
Other	`OtherOperatingActivitiesCashFlowStatement`	$2.62M	USD	3 Qtrs
Other	`OtherOperatingActivitiesCashFlowStatement`	-	USD	3 Qtrs
Other	`OtherOperatingActivitiesCashFlowStatement`	-	USD	3 Qtrs
Receivables	`IncreaseDecreaseInReceivables`	$16.39M	USD	3 Qtrs
Receivables	`IncreaseDecreaseInReceivables`	$16.39M	USD	3 Qtrs
Receivables	`IncreaseDecreaseInReceivables`	$95.13M	USD	3 Qtrs
Receivables	`IncreaseDecreaseInReceivables`	$95.13M	USD	3 Qtrs
Deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$54.38M	USD	3 Qtrs
Deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$54.38M	USD	3 Qtrs
Deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$81.33M	USD	3 Qtrs
Deferred charges and other assets	`IncreaseDecreaseInOtherOperatingAssets`	$81.33M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$881.00K	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$881.00K	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-2.09M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-2.09M	USD	3 Qtrs
Customer deposit	`IncreaseDecreaseInContractWithCustomerLiability`	$76.10M	USD	3 Qtrs
Customer deposit	`IncreaseDecreaseInContractWithCustomerLiability`	$76.10M	USD	3 Qtrs
Customer deposit	`IncreaseDecreaseInContractWithCustomerLiability`	$-76.10M	USD	3 Qtrs
Customer deposit	`IncreaseDecreaseInContractWithCustomerLiability`	$-76.10M	USD	3 Qtrs
Accrued compensation and other expenses	`IncreaseDecreaseInOtherAccruedLiabilities`	$-8.57M	USD	3 Qtrs
Accrued compensation and other expenses	`IncreaseDecreaseInOtherAccruedLiabilities`	$-8.57M	USD	3 Qtrs
Accrued compensation and other expenses	`IncreaseDecreaseInOtherAccruedLiabilities`	$22.21M	USD	3 Qtrs
Accrued compensation and other expenses	`IncreaseDecreaseInOtherAccruedLiabilities`	$22.21M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$237.32M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$237.32M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$79.49M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$79.49M	USD	3 Qtrs
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$445.43M	USD	3 Qtrs
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$445.43M	USD	3 Qtrs
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$671.61M	USD	3 Qtrs
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$671.61M	USD	3 Qtrs
Sales of short-term investments	`ProceedsFromSaleOfShortTermInvestments`	$618.64M	USD	3 Qtrs
Sales of short-term investments	`ProceedsFromSaleOfShortTermInvestments`	$618.64M	USD	3 Qtrs
Sales of short-term investments	`ProceedsFromSaleOfShortTermInvestments`	$627.91M	USD	3 Qtrs
Sales of short-term investments	`ProceedsFromSaleOfShortTermInvestments`	$627.91M	USD	3 Qtrs
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$1.93M	USD	3 Qtrs
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$1.93M	USD	3 Qtrs
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$3.17M	USD	3 Qtrs
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$3.17M	USD	3 Qtrs
Capitalized patent costs	`CapitalizedPatentCosts`	$33.51M	USD	3 Qtrs
Capitalized patent costs	`CapitalizedPatentCosts`	$33.51M	USD	3 Qtrs
Capitalized patent costs	`CapitalizedPatentCosts`	$27.99M	USD	3 Qtrs
Capitalized patent costs	`CapitalizedPatentCosts`	$27.99M	USD	3 Qtrs
Long-term investments	`PaymentsForProceedsFromLongtermInvestments`	$-567.00K	USD	3 Qtrs
Long-term investments	`PaymentsForProceedsFromLongtermInvestments`	$-567.00K	USD	3 Qtrs
Long-term investments	`PaymentsForProceedsFromLongtermInvestments`	$-1.58M	USD	3 Qtrs
Long-term investments	`PaymentsForProceedsFromLongtermInvestments`	$-1.58M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$139.35M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$139.35M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-74.30M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-74.30M	USD	3 Qtrs
Payments on long-term debt	`RepaymentsOfLongTermDebt`	-	USD	3 Qtrs
Payments on long-term debt	`RepaymentsOfLongTermDebt`	-	USD	3 Qtrs
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$139.07M	USD	3 Qtrs
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$139.07M	USD	3 Qtrs
Payments of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	3 Qtrs
Payments of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	3 Qtrs
Payments of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$100.00K	USD	3 Qtrs
Payments of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$100.00K	USD	3 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$302.73M	USD	3 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$302.73M	USD	3 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$66.73M	USD	3 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$66.73M	USD	3 Qtrs
Net proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$699.00K	USD	3 Qtrs
Net proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$699.00K	USD	3 Qtrs
Net proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$11.00K	USD	3 Qtrs
Net proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$11.00K	USD	3 Qtrs
Non-controlling interest contribution	`ProceedsFromMinorityShareholders`	-	USD	3 Qtrs
Non-controlling interest contribution	`ProceedsFromMinorityShareholders`	-	USD	3 Qtrs
Non-controlling interest contribution	`ProceedsFromMinorityShareholders`	$1.75M	USD	3 Qtrs
Non-controlling interest contribution	`ProceedsFromMinorityShareholders`	$1.75M	USD	3 Qtrs
Taxes withheld upon restricted stock unit vestings	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.82M	USD	3 Qtrs
Taxes withheld upon restricted stock unit vestings	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.82M	USD	3 Qtrs
Taxes withheld upon restricted stock unit vestings	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$10.98M	USD	3 Qtrs
Taxes withheld upon restricted stock unit vestings	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$10.98M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividends`	$30.43M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividends`	$30.43M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividends`	$29.11M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividends`	$29.11M	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-340.47M	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-340.47M	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-251.03M	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-251.03M	USD	3 Qtrs
Net decrease in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-32.18M	USD	3 Qtrs
Net decrease in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-32.18M	USD	3 Qtrs
Net decrease in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-177.45M	USD	3 Qtrs
Net decrease in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-177.45M	USD	3 Qtrs
Cash, cash equivalents and restricted cash, beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$410.78M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$410.78M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$525.71M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$525.71M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$703.16M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$703.16M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$442.96M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$442.96M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$410.78M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$410.78M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$525.71M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$525.71M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$703.16M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$703.16M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$442.96M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$442.96M	USD	Point-in-time

Stockholders Equity 172 line items

Line Item	Tag	Value	Unit	Period
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.35	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.35	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.45	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.45	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.35	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.35	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.10	USD	3 Qtrs
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.10	USD	3 Qtrs
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$0.40	USD	1 Quarter
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.25	USD	3 Qtrs
Dividends declared (in USD per share)	`CommonStockDividendsPerShareDeclared`	$1.25	USD	3 Qtrs
Beginning balance (in shares)	`CommonStockSharesOutstanding`	25.58M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	25.58M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	25.24M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	25.24M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	43.93M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	43.93M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	44.90M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	44.90M	shares	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$624.29M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$624.29M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$696.78M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$696.78M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$625.30M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$625.30M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$600.36M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$600.36M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$587.78M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$587.78M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$581.55M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$581.55M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$722.54M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$722.54M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$730.51M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$730.51M	USD	Point-in-time
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$47.94M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$47.94M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$21.78M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$21.78M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$109.66M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$109.66M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$105.26M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$105.26M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$81.65M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$81.65M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$174.98M	USD	3 Qtrs
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$174.98M	USD	3 Qtrs
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$34.19M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$34.19M	USD	1 Quarter
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$225.51M	USD	3 Qtrs
Net income attributable to InterDigital, Inc.	`NetIncomeLoss`	$225.51M	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-3.02M	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-3.02M	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-787.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-787.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-490.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-490.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	3 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-1.74M	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-1.74M	USD	1 Quarter
Non-controlling interest contributions	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$1.75M	USD	1 Quarter
Non-controlling interest contributions	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$1.75M	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-495.00K	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-495.00K	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$30.00K	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$30.00K	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-90.00K	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-90.00K	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.84M	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.84M	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.37M	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.37M	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$781.00K	USD	3 Qtrs
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$781.00K	USD	3 Qtrs
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.23M	USD	3 Qtrs
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.23M	USD	3 Qtrs
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$579.00K	USD	1 Quarter
Net change in unrealized gain (loss) on short-term investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$579.00K	USD	1 Quarter
Dividends declared	`Dividends`	$10.15M	USD	1 Quarter
Dividends declared	`Dividends`	$10.15M	USD	1 Quarter
Dividends declared	`Dividends`	$11.37M	USD	1 Quarter
Dividends declared	`Dividends`	$11.37M	USD	1 Quarter
Dividends declared	`Dividends`	$9.45M	USD	1 Quarter
Dividends declared	`Dividends`	$9.45M	USD	1 Quarter
Dividends declared	`Dividends`	$10.35M	USD	1 Quarter
Dividends declared	`Dividends`	$10.35M	USD	1 Quarter
Dividends declared	`Dividends`	$10.05M	USD	1 Quarter
Dividends declared	`Dividends`	$10.05M	USD	1 Quarter
Dividends declared	`Dividends`	$9.27M	USD	1 Quarter
Dividends declared	`Dividends`	$9.27M	USD	1 Quarter
Exercise of common stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$687.00K	USD	1 Quarter
Exercise of common stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$687.00K	USD	1 Quarter
Exercise of common stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$11.00K	USD	1 Quarter
Exercise of common stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$11.00K	USD	1 Quarter
Exercise of common stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$12.00K	USD	1 Quarter
Exercise of common stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$12.00K	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-4.60M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-4.60M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-1.39M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-1.39M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-2.89M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-2.89M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-8.63M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-8.63M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-1.58M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-1.58M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-6.71M	USD	1 Quarter
Issuance of common stock, net	`StockIssuedDuringPeriodValueNewIssues`	$-6.71M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$10.34M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$10.34M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.39M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.39M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$8.74M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$8.74M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$7.79M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$7.79M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.08M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.08M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.65M	USD	1 Quarter
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.65M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$203.38M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$203.38M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$42.49M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$42.49M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$56.86M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$56.86M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$35.11M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$35.11M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$29.02M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$29.02M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$2.92M	USD	1 Quarter
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$2.92M	USD	1 Quarter
Settlement of the 2024 Warrants	`StockIssuedDuringPeriodValueSettlementOfWarrants`	$-4.00K	USD	1 Quarter
Settlement of the 2024 Warrants	`StockIssuedDuringPeriodValueSettlementOfWarrants`	$-4.00K	USD	1 Quarter
Settlement of the 2024 Notes (in shares)	`StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities`	300,000.00	shares	Point-in-time
Settlement of the 2024 Notes (in shares)	`StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities`	300,000.00	shares	Point-in-time
Settlement of the 2024 Notes	`StockIssuedDuringPeriodValueConversionOfConvertibleSecurities`	-	USD	1 Quarter
Settlement of the 2024 Notes	`StockIssuedDuringPeriodValueConversionOfConvertibleSecurities`	-	USD	1 Quarter
Settlement of the 2024 Hedges	`TreasuryStockValueSettlementOfDebtInstrumentHedges`	-	USD	1 Quarter
Settlement of the 2024 Hedges	`TreasuryStockValueSettlementOfDebtInstrumentHedges`	-	USD	1 Quarter
Ending balance (in shares)	`CommonStockSharesOutstanding`	25.58M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	25.58M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	25.24M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	25.24M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	43.93M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	43.93M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	44.90M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	44.90M	shares	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$624.29M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$624.29M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$696.78M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$696.78M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$625.30M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$625.30M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$600.36M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$600.36M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$587.78M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$587.78M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$581.55M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$581.55M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$722.54M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$722.54M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$730.51M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$730.51M	USD	Point-in-time

Comprehensive Income 48 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$34.19M	USD	1 Quarter
Net income	`ProfitLoss`	$34.19M	USD	1 Quarter
Net income	`ProfitLoss`	$171.97M	USD	3 Qtrs
Net income	`ProfitLoss`	$171.97M	USD	3 Qtrs
Net income	`ProfitLoss`	$47.15M	USD	1 Quarter
Net income	`ProfitLoss`	$47.15M	USD	1 Quarter
Net income	`ProfitLoss`	$225.51M	USD	3 Qtrs
Net income	`ProfitLoss`	$225.51M	USD	3 Qtrs
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-495.00K	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-495.00K	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$30.00K	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$30.00K	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-90.00K	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-90.00K	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.84M	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.84M	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.37M	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$1.37M	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$781.00K	USD	3 Qtrs
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$781.00K	USD	3 Qtrs
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.23M	USD	3 Qtrs
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.23M	USD	3 Qtrs
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$579.00K	USD	1 Quarter
Unrealized gain (loss) on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$579.00K	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$170.74M	USD	3 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$170.74M	USD	3 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$47.18M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$47.18M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$35.56M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$35.56M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$226.29M	USD	3 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$226.29M	USD	3 Qtrs
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	3 Qtrs
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	3 Qtrs
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-787.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-787.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-3.02M	USD	3 Qtrs
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-3.02M	USD	3 Qtrs
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Total comprehensive income attributable to InterDigital, Inc.	`ComprehensiveIncomeNetOfTax`	$35.56M	USD	1 Quarter
Total comprehensive income attributable to InterDigital, Inc.	`ComprehensiveIncomeNetOfTax`	$35.56M	USD	1 Quarter
Total comprehensive income attributable to InterDigital, Inc.	`ComprehensiveIncomeNetOfTax`	$173.75M	USD	3 Qtrs
Total comprehensive income attributable to InterDigital, Inc.	`ComprehensiveIncomeNetOfTax`	$173.75M	USD	3 Qtrs
Total comprehensive income attributable to InterDigital, Inc.	`ComprehensiveIncomeNetOfTax`	$226.29M	USD	3 Qtrs
Total comprehensive income attributable to InterDigital, Inc.	`ComprehensiveIncomeNetOfTax`	$226.29M	USD	3 Qtrs
Total comprehensive income attributable to InterDigital, Inc.	`ComprehensiveIncomeNetOfTax`	$47.97M	USD	1 Quarter
Total comprehensive income attributable to InterDigital, Inc.	`ComprehensiveIncomeNetOfTax`	$47.97M	USD	1 Quarter

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.