10-Q Filing

KIRBY CORP CIK: 56047 Q2 2025

Filing Information

Form Type	10-Q
Accession Number	`0000950170-25-106370`
Period End Date	20250630
Filing Date	20250811
Fiscal Year	2025
Fiscal Period	Q2
XBRL Instance	kex-20250630_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 168 Income Statement 136 Cash Flow Statement 128 Stockholders Equity 78 Comprehensive Income 56

Balance Sheet 168 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$68.38M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$68.38M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$74.44M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$74.44M	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Trade - less allowance for doubtful accounts	`AccountsReceivableNetCurrent`	$564.23M	USD	Point-in-time
Trade - less allowance for doubtful accounts	`AccountsReceivableNetCurrent`	$564.23M	USD	Point-in-time
Trade - less allowance for doubtful accounts	`AccountsReceivableNetCurrent`	$489.86M	USD	Point-in-time
Trade - less allowance for doubtful accounts	`AccountsReceivableNetCurrent`	$489.86M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	65.50M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	65.50M	shares	Point-in-time
Other	`OtherReceivables`	$62.22M	USD	Point-in-time
Other	`OtherReceivables`	$62.22M	USD	Point-in-time
Other	`OtherReceivables`	$46.89M	USD	Point-in-time
Other	`OtherReceivables`	$46.89M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	65.50M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	65.50M	shares	Point-in-time
Treasury stock, shares	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Treasury stock, shares	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Treasury stock, shares	`TreasuryStockCommonShares`	9.40M	shares	Point-in-time
Treasury stock, shares	`TreasuryStockCommonShares`	9.40M	shares	Point-in-time
Inventories - net	`InventoryNet`	$426.26M	USD	Point-in-time
Inventories - net	`InventoryNet`	$426.26M	USD	Point-in-time
Inventories - net	`InventoryNet`	$393.90M	USD	Point-in-time
Inventories - net	`InventoryNet`	$393.90M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$63.47M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$63.47M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$63.93M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$63.93M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.07B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.07B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.19B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.19B	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentGross`	$6.12B	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentGross`	$6.12B	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentGross`	$6.33B	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentGross`	$6.33B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.19B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.19B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.10B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.10B	USD	Point-in-time
Property and equipment - net	`PropertyPlantAndEquipmentNet`	$4.02B	USD	Point-in-time
Property and equipment - net	`PropertyPlantAndEquipmentNet`	$4.02B	USD	Point-in-time
Property and equipment - net	`PropertyPlantAndEquipmentNet`	$4.14B	USD	Point-in-time
Property and equipment - net	`PropertyPlantAndEquipmentNet`	$4.14B	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$157.04M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$157.04M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$158.99M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$158.99M	USD	Point-in-time
Goodwill	`Goodwill`	$438.75M	USD	Point-in-time
Goodwill	`Goodwill`	$438.75M	USD	Point-in-time
Goodwill	`Goodwill`	$438.75M	USD	Point-in-time
Goodwill	`Goodwill`	$438.75M	USD	Point-in-time
Other intangibles, net	`FiniteLivedIntangibleAssetsNet`	$34.41M	USD	Point-in-time
Other intangibles, net	`FiniteLivedIntangibleAssetsNet`	$34.41M	USD	Point-in-time
Other intangibles, net	`FiniteLivedIntangibleAssetsNet`	$33.12M	USD	Point-in-time
Other intangibles, net	`FiniteLivedIntangibleAssetsNet`	$33.12M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$128.28M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$128.28M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$130.97M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$130.97M	USD	Point-in-time
Total assets	`Assets`	$6.08B	USD	Point-in-time
Total assets	`Assets`	$6.08B	USD	Point-in-time
Total assets	`Assets`	$5.85B	USD	Point-in-time
Total assets	`Assets`	$5.85B	USD	Point-in-time
Bank notes payable	`NotesPayableToBankCurrent`	$8.23M	USD	Point-in-time
Bank notes payable	`NotesPayableToBankCurrent`	$8.23M	USD	Point-in-time
Bank notes payable	`NotesPayableToBankCurrent`	$6.43M	USD	Point-in-time
Bank notes payable	`NotesPayableToBankCurrent`	$6.43M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$25.42M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$25.42M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$778.00K	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$778.00K	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$250.06M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$250.06M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$251.35M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$251.35M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$203.52M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$203.52M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$236.81M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$236.81M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$35.73M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$35.73M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$37.98M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$37.98M	USD	Point-in-time
Deferred revenues	`ContractWithCustomerLiabilityCurrent`	$180.68M	USD	Point-in-time
Deferred revenues	`ContractWithCustomerLiabilityCurrent`	$180.68M	USD	Point-in-time
Deferred revenues	`ContractWithCustomerLiabilityCurrent`	$177.22M	USD	Point-in-time
Deferred revenues	`ContractWithCustomerLiabilityCurrent`	$177.22M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$734.75M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$734.75M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$679.46M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$679.46M	USD	Point-in-time
Long-term debt, net - less current portion	`LongTermDebtNoncurrent`	$866.72M	USD	Point-in-time
Long-term debt, net - less current portion	`LongTermDebtNoncurrent`	$866.72M	USD	Point-in-time
Long-term debt, net - less current portion	`LongTermDebtNoncurrent`	$1.11B	USD	Point-in-time
Long-term debt, net - less current portion	`LongTermDebtNoncurrent`	$1.11B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$739.47M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$739.47M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$747.06M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$747.06M	USD	Point-in-time
Operating lease liabilities - less current portion	`OperatingLeaseLiabilityNoncurrent`	$142.10M	USD	Point-in-time
Operating lease liabilities - less current portion	`OperatingLeaseLiabilityNoncurrent`	$142.10M	USD	Point-in-time
Operating lease liabilities - less current portion	`OperatingLeaseLiabilityNoncurrent`	$148.17M	USD	Point-in-time
Operating lease liabilities - less current portion	`OperatingLeaseLiabilityNoncurrent`	$148.17M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$9.59M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$9.59M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$10.12M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$10.12M	USD	Point-in-time
Total long-term liabilities	`LiabilitiesNoncurrent`	$2.01B	USD	Point-in-time
Total long-term liabilities	`LiabilitiesNoncurrent`	$2.01B	USD	Point-in-time
Total long-term liabilities	`LiabilitiesNoncurrent`	$1.76B	USD	Point-in-time
Total long-term liabilities	`LiabilitiesNoncurrent`	$1.76B	USD	Point-in-time
Contingencies and commitments	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies and commitments	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies and commitments	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies and commitments	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares	`CommonStockValue`	$6.55M	USD	Point-in-time
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares	`CommonStockValue`	$6.55M	USD	Point-in-time
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares	`CommonStockValue`	$6.55M	USD	Point-in-time
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares	`CommonStockValue`	$6.55M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$868.76M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$868.76M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$867.14M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$867.14M	USD	Point-in-time
Accumulated other comprehensive income - net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$65.61M	USD	Point-in-time
Accumulated other comprehensive income - net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$65.61M	USD	Point-in-time
Accumulated other comprehensive income - net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$71.19M	USD	Point-in-time
Accumulated other comprehensive income - net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$71.19M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.15B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.15B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.98B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.98B	USD	Point-in-time
Treasury stock - at cost, 9.4 million shares at June 30, 2025 and 8.2 million at December 31, 2024	`TreasuryStockValue`	$573.06M	USD	Point-in-time
Treasury stock - at cost, 9.4 million shares at June 30, 2025 and 8.2 million at December 31, 2024	`TreasuryStockValue`	$573.06M	USD	Point-in-time
Treasury stock - at cost, 9.4 million shares at June 30, 2025 and 8.2 million at December 31, 2024	`TreasuryStockValue`	$699.87M	USD	Point-in-time
Treasury stock - at cost, 9.4 million shares at June 30, 2025 and 8.2 million at December 31, 2024	`TreasuryStockValue`	$699.87M	USD	Point-in-time
Total Kirby stockholders' equity	`StockholdersEquity`	$3.39B	USD	Point-in-time
Total Kirby stockholders' equity	`StockholdersEquity`	$3.39B	USD	Point-in-time
Total Kirby stockholders' equity	`StockholdersEquity`	$3.35B	USD	Point-in-time
Total Kirby stockholders' equity	`StockholdersEquity`	$3.35B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$1.82M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$1.82M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$1.44M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$1.44M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.26B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.26B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.39B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.39B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$6.08B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$6.08B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$5.85B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$5.85B	USD	Point-in-time

Income Statement 136 line items

Line Item	Tag	Value	Unit	Period
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.63B	USD	2 Qtrs
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.63B	USD	2 Qtrs
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.64B	USD	2 Qtrs
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.64B	USD	2 Qtrs
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$855.46M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$855.46M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$824.39M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$824.39M	USD	1 Quarter
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$563.24M	USD	1 Quarter
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$563.24M	USD	1 Quarter
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$1.10B	USD	2 Qtrs
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$1.10B	USD	2 Qtrs
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$554.23M	USD	1 Quarter
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$554.23M	USD	1 Quarter
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$1.08B	USD	2 Qtrs
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$1.08B	USD	2 Qtrs
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$181.13M	USD	2 Qtrs
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$181.13M	USD	2 Qtrs
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$85.85M	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$85.85M	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$80.38M	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$80.38M	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$170.59M	USD	2 Qtrs
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$170.59M	USD	2 Qtrs
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$10.31M	USD	1 Quarter
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$10.31M	USD	1 Quarter
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$18.35M	USD	2 Qtrs
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$18.35M	USD	2 Qtrs
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$10.54M	USD	1 Quarter
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$10.54M	USD	1 Quarter
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$19.37M	USD	2 Qtrs
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$19.37M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$129.40M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$129.40M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$59.48M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$59.48M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$65.67M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$65.67M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$117.12M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$117.12M	USD	2 Qtrs
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$1.69M	USD	1 Quarter
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$1.69M	USD	1 Quarter
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$589.00K	USD	2 Qtrs
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$589.00K	USD	2 Qtrs
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$515.00K	USD	1 Quarter
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$515.00K	USD	1 Quarter
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$1.76M	USD	2 Qtrs
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$1.76M	USD	2 Qtrs
Total costs and expenses	`CostsAndExpenses`	$703.89M	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$703.89M	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$1.40B	USD	2 Qtrs
Total costs and expenses	`CostsAndExpenses`	$1.40B	USD	2 Qtrs
Total costs and expenses	`CostsAndExpenses`	$1.41B	USD	2 Qtrs
Total costs and expenses	`CostsAndExpenses`	$1.41B	USD	2 Qtrs
Total costs and expenses	`CostsAndExpenses`	$723.61M	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$723.61M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$131.85M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$131.85M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$222.02M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$222.02M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$237.39M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$237.39M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$120.50M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$120.50M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$4.81M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$4.81M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$10.15M	USD	2 Qtrs
Other income	`OtherNonoperatingIncome`	$10.15M	USD	2 Qtrs
Other income	`OtherNonoperatingIncome`	$6.36M	USD	2 Qtrs
Other income	`OtherNonoperatingIncome`	$6.36M	USD	2 Qtrs
Other income	`OtherNonoperatingIncome`	$3.09M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$3.09M	USD	1 Quarter
Interest expense	`InterestExpense`	$12.73M	USD	1 Quarter
Interest expense	`InterestExpense`	$12.73M	USD	1 Quarter
Interest expense	`InterestExpense`	$23.27M	USD	2 Qtrs
Interest expense	`InterestExpense`	$23.27M	USD	2 Qtrs
Interest expense	`InterestExpense`	$25.97M	USD	2 Qtrs
Interest expense	`InterestExpense`	$25.97M	USD	2 Qtrs
Interest expense	`InterestExpense`	$12.82M	USD	1 Quarter
Interest expense	`InterestExpense`	$12.82M	USD	1 Quarter
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$224.27M	USD	2 Qtrs
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$224.27M	USD	2 Qtrs
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$123.93M	USD	1 Quarter
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$123.93M	USD	1 Quarter
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$202.41M	USD	2 Qtrs
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$202.41M	USD	2 Qtrs
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$110.77M	USD	1 Quarter
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$110.77M	USD	1 Quarter
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$48.51M	USD	2 Qtrs
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$48.51M	USD	2 Qtrs
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$26.79M	USD	1 Quarter
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$26.79M	USD	1 Quarter
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$53.62M	USD	2 Qtrs
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$53.62M	USD	2 Qtrs
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$29.55M	USD	1 Quarter
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$29.55M	USD	1 Quarter
Net earnings	`ProfitLoss`	$94.38M	USD	1 Quarter
Net earnings	`ProfitLoss`	$94.38M	USD	1 Quarter
Net earnings	`ProfitLoss`	$170.65M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$170.65M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$153.90M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$153.90M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$83.98M	USD	1 Quarter
Net earnings	`ProfitLoss`	$83.98M	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$101.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$101.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-25.00K	USD	2 Qtrs
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-25.00K	USD	2 Qtrs
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$385.00K	USD	2 Qtrs
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$385.00K	USD	2 Qtrs
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$128.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$128.00K	USD	1 Quarter
Net earnings attributable to Kirby	`NetIncomeLoss`	$83.85M	USD	1 Quarter
Net earnings attributable to Kirby	`NetIncomeLoss`	$83.85M	USD	1 Quarter
Net earnings attributable to Kirby	`NetIncomeLoss`	$94.28M	USD	1 Quarter
Net earnings attributable to Kirby	`NetIncomeLoss`	$94.28M	USD	1 Quarter
Net earnings attributable to Kirby	`NetIncomeLoss`	$153.92M	USD	2 Qtrs
Net earnings attributable to Kirby	`NetIncomeLoss`	$153.92M	USD	2 Qtrs
Net earnings attributable to Kirby	`NetIncomeLoss`	$170.26M	USD	2 Qtrs
Net earnings attributable to Kirby	`NetIncomeLoss`	$170.26M	USD	2 Qtrs
Basic	`EarningsPerShareBasic`	$1.44	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$1.44	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$2.64	USD	2 Qtrs
Basic	`EarningsPerShareBasic`	$2.64	USD	2 Qtrs
Basic	`EarningsPerShareBasic`	$1.68	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$1.68	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$3.01	USD	2 Qtrs
Basic	`EarningsPerShareBasic`	$3.01	USD	2 Qtrs
Diluted	`EarningsPerShareDiluted`	$2.62	USD	2 Qtrs
Diluted	`EarningsPerShareDiluted`	$2.62	USD	2 Qtrs
Diluted	`EarningsPerShareDiluted`	$1.67	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$1.67	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$2.99	USD	2 Qtrs
Diluted	`EarningsPerShareDiluted`	$2.99	USD	2 Qtrs
Diluted	`EarningsPerShareDiluted`	$1.43	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$1.43	USD	1 Quarter

Cash Flow Statement 128 line items

Line Item	Tag	Value	Unit	Period
Net earnings	`ProfitLoss`	$94.38M	USD	1 Quarter
Net earnings	`ProfitLoss`	$94.38M	USD	1 Quarter
Net earnings	`ProfitLoss`	$170.65M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$170.65M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$153.90M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$153.90M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$83.98M	USD	1 Quarter
Net earnings	`ProfitLoss`	$83.98M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$129.40M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$129.40M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$59.48M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$59.48M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$65.67M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$65.67M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$117.12M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$117.12M	USD	2 Qtrs
Provision for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$9.62M	USD	2 Qtrs
Provision for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$9.62M	USD	2 Qtrs
Provision for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$23.93M	USD	2 Qtrs
Provision for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$23.93M	USD	2 Qtrs
Amortization of share-based compensation	`ShareBasedCompensation`	$9.40M	USD	2 Qtrs
Amortization of share-based compensation	`ShareBasedCompensation`	$9.40M	USD	2 Qtrs
Amortization of share-based compensation	`ShareBasedCompensation`	$11.15M	USD	2 Qtrs
Amortization of share-based compensation	`ShareBasedCompensation`	$11.15M	USD	2 Qtrs
Amortization of major maintenance costs	`AmortizationOfMajorMaintenanceCosts`	$14.63M	USD	2 Qtrs
Amortization of major maintenance costs	`AmortizationOfMajorMaintenanceCosts`	$14.63M	USD	2 Qtrs
Amortization of major maintenance costs	`AmortizationOfMajorMaintenanceCosts`	$16.75M	USD	2 Qtrs
Amortization of major maintenance costs	`AmortizationOfMajorMaintenanceCosts`	$16.75M	USD	2 Qtrs
Other	`OtherNoncashIncomeExpense`	$-915.00K	USD	2 Qtrs
Other	`OtherNoncashIncomeExpense`	$-915.00K	USD	2 Qtrs
Other	`OtherNoncashIncomeExpense`	$-178.00K	USD	2 Qtrs
Other	`OtherNoncashIncomeExpense`	$-178.00K	USD	2 Qtrs
Decrease in cash flows resulting from changes in operating assets and liabilities, net	`IncreaseDecreaseInOperatingCapital`	$205.16M	USD	2 Qtrs
Decrease in cash flows resulting from changes in operating assets and liabilities, net	`IncreaseDecreaseInOperatingCapital`	$205.16M	USD	2 Qtrs
Decrease in cash flows resulting from changes in operating assets and liabilities, net	`IncreaseDecreaseInOperatingCapital`	$19.41M	USD	2 Qtrs
Decrease in cash flows resulting from changes in operating assets and liabilities, net	`IncreaseDecreaseInOperatingCapital`	$19.41M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$130.46M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$130.46M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$302.61M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$302.61M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$169.61M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$169.61M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$150.16M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$150.16M	USD	2 Qtrs
Acquisitions of businesses and marine equipment	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$97.25M	USD	2 Qtrs
Acquisitions of businesses and marine equipment	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$97.25M	USD	2 Qtrs
Acquisitions of businesses and marine equipment	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$65.23M	USD	2 Qtrs
Acquisitions of businesses and marine equipment	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$65.23M	USD	2 Qtrs
Proceeds from disposition of assets	`ProceedsFromSaleOfProductiveAssets`	$9.05M	USD	2 Qtrs
Proceeds from disposition of assets	`ProceedsFromSaleOfProductiveAssets`	$9.05M	USD	2 Qtrs
Proceeds from disposition of assets	`ProceedsFromSaleOfProductiveAssets`	$11.58M	USD	2 Qtrs
Proceeds from disposition of assets	`ProceedsFromSaleOfProductiveAssets`	$11.58M	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$3.00M	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$3.00M	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	-	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	-	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-238.83M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-238.83M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-225.78M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-225.78M	USD	2 Qtrs
Borrowings on bank credit facilities, net	`ProceedsFromRepaymentsOfLinesOfCredit`	$30.90M	USD	2 Qtrs
Borrowings on bank credit facilities, net	`ProceedsFromRepaymentsOfLinesOfCredit`	$30.90M	USD	2 Qtrs
Borrowings on bank credit facilities, net	`ProceedsFromRepaymentsOfLinesOfCredit`	$243.21M	USD	2 Qtrs
Borrowings on bank credit facilities, net	`ProceedsFromRepaymentsOfLinesOfCredit`	$243.21M	USD	2 Qtrs
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	2 Qtrs
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	2 Qtrs
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$3.00K	USD	2 Qtrs
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$3.00K	USD	2 Qtrs
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$262.00K	USD	2 Qtrs
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$262.00K	USD	2 Qtrs
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$4.10M	USD	2 Qtrs
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$4.10M	USD	2 Qtrs
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.96M	USD	2 Qtrs
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.96M	USD	2 Qtrs
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.34M	USD	2 Qtrs
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.34M	USD	2 Qtrs
Treasury stock purchases	`PaymentsForRepurchaseOfCommonStock`	$85.47M	USD	2 Qtrs
Treasury stock purchases	`PaymentsForRepurchaseOfCommonStock`	$85.47M	USD	2 Qtrs
Treasury stock purchases	`PaymentsForRepurchaseOfCommonStock`	$132.67M	USD	2 Qtrs
Treasury stock purchases	`PaymentsForRepurchaseOfCommonStock`	$132.67M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-2.53M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-2.53M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-49.00K	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-49.00K	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$102.31M	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$102.31M	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-55.86M	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-55.86M	USD	2 Qtrs
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-6.06M	USD	2 Qtrs
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-6.06M	USD	2 Qtrs
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$20.96M	USD	2 Qtrs
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$20.96M	USD	2 Qtrs
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$68.38M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$68.38M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$53.54M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$53.54M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$74.44M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$74.44M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$32.58M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$32.58M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$68.38M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$68.38M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$53.54M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$53.54M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$74.44M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$74.44M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$32.58M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$32.58M	USD	Point-in-time
Interest paid	`InterestPaidNet`	$26.24M	USD	2 Qtrs
Interest paid	`InterestPaidNet`	$26.24M	USD	2 Qtrs
Interest paid	`InterestPaidNet`	$22.92M	USD	2 Qtrs
Interest paid	`InterestPaidNet`	$22.92M	USD	2 Qtrs
Income taxes paid, net	`IncomeTaxesPaidNet`	$79.74M	USD	2 Qtrs
Income taxes paid, net	`IncomeTaxesPaidNet`	$79.74M	USD	2 Qtrs
Income taxes paid, net	`IncomeTaxesPaidNet`	$14.39M	USD	2 Qtrs
Income taxes paid, net	`IncomeTaxesPaidNet`	$14.39M	USD	2 Qtrs
Operating cash outflow from operating leases	`OperatingLeasePayments`	$24.54M	USD	2 Qtrs
Operating cash outflow from operating leases	`OperatingLeasePayments`	$24.54M	USD	2 Qtrs
Operating cash outflow from operating leases	`OperatingLeasePayments`	$22.98M	USD	2 Qtrs
Operating cash outflow from operating leases	`OperatingLeasePayments`	$22.98M	USD	2 Qtrs
Capital expenditures included in accounts payable	`CapitalExpendituresIncurredPaidAndNotYetPaid`	$-410.00K	USD	2 Qtrs
Capital expenditures included in accounts payable	`CapitalExpendituresIncurredPaidAndNotYetPaid`	$-410.00K	USD	2 Qtrs
Capital expenditures included in accounts payable	`CapitalExpendituresIncurredPaidAndNotYetPaid`	$-2.02M	USD	2 Qtrs
Capital expenditures included in accounts payable	`CapitalExpendituresIncurredPaidAndNotYetPaid`	$-2.02M	USD	2 Qtrs
Right-of-use assets obtained in exchange for lease obligations	`RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability`	$13.70M	USD	2 Qtrs
Right-of-use assets obtained in exchange for lease obligations	`RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability`	$13.70M	USD	2 Qtrs
Right-of-use assets obtained in exchange for lease obligations	`RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability`	$21.05M	USD	2 Qtrs
Right-of-use assets obtained in exchange for lease obligations	`RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability`	$21.05M	USD	2 Qtrs

Stockholders Equity 78 line items

Line Item	Tag	Value	Unit	Period
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.26B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.26B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.39B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.39B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	9.40M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	9.40M	shares	Point-in-time
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$4.10M	USD	2 Qtrs
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$4.10M	USD	2 Qtrs
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$262.00K	USD	2 Qtrs
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$262.00K	USD	2 Qtrs
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$2.58M	USD	1 Quarter
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$2.58M	USD	1 Quarter
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$7.00K	USD	1 Quarter
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$7.00K	USD	1 Quarter
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.34M	USD	2 Qtrs
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.34M	USD	2 Qtrs
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.96M	USD	2 Qtrs
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.96M	USD	2 Qtrs
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$55.00K	USD	1 Quarter
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$55.00K	USD	1 Quarter
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-11.15M	USD	2 Qtrs
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-11.15M	USD	2 Qtrs
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-9.40M	USD	2 Qtrs
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-9.40M	USD	2 Qtrs
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-3.30M	USD	1 Quarter
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-3.30M	USD	1 Quarter
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-2.99M	USD	1 Quarter
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-2.99M	USD	1 Quarter
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$132.67M	USD	2 Qtrs
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$132.67M	USD	2 Qtrs
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$43.68M	USD	1 Quarter
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$43.68M	USD	1 Quarter
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$85.47M	USD	2 Qtrs
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$85.47M	USD	2 Qtrs
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$31.20M	USD	1 Quarter
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$31.20M	USD	1 Quarter
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$314.00K	USD	1 Quarter
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$314.00K	USD	1 Quarter
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$704.00K	USD	2 Qtrs
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$704.00K	USD	2 Qtrs
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$1.21M	USD	2 Qtrs
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$1.21M	USD	2 Qtrs
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$400.00K	USD	1 Quarter
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$400.00K	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$165.07M	USD	2 Qtrs
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$165.07M	USD	2 Qtrs
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$90.36M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$90.36M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$154.01M	USD	2 Qtrs
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$154.01M	USD	2 Qtrs
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$84.50M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$84.50M	USD	1 Quarter
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.26B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.26B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.39B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.39B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	9.40M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	9.40M	shares	Point-in-time

Comprehensive Income 56 line items

Line Item	Tag	Value	Unit	Period
Net earnings	`ProfitLoss`	$94.38M	USD	1 Quarter
Net earnings	`ProfitLoss`	$94.38M	USD	1 Quarter
Net earnings	`ProfitLoss`	$170.65M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$170.65M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$153.90M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$153.90M	USD	2 Qtrs
Net earnings	`ProfitLoss`	$83.98M	USD	1 Quarter
Net earnings	`ProfitLoss`	$83.98M	USD	1 Quarter
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$6.07M	USD	2 Qtrs
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$6.07M	USD	2 Qtrs
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$4.20M	USD	1 Quarter
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$4.20M	USD	1 Quarter
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-591.00K	USD	2 Qtrs
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-591.00K	USD	2 Qtrs
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-986.00K	USD	1 Quarter
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-986.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-473.00K	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-473.00K	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-473.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-473.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$178.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$178.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$486.00K	USD	2 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$486.00K	USD	2 Qtrs
Total other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$118.00K	USD	2 Qtrs
Total other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$118.00K	USD	2 Qtrs
Total other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-5.58M	USD	2 Qtrs
Total other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-5.58M	USD	2 Qtrs
Total other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$513.00K	USD	1 Quarter
Total other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$513.00K	USD	1 Quarter
Total other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-4.02M	USD	1 Quarter
Total other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-4.02M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$165.07M	USD	2 Qtrs
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$165.07M	USD	2 Qtrs
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$90.36M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$90.36M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$154.01M	USD	2 Qtrs
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$154.01M	USD	2 Qtrs
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$84.50M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$84.50M	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$101.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$101.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-25.00K	USD	2 Qtrs
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-25.00K	USD	2 Qtrs
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$385.00K	USD	2 Qtrs
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$385.00K	USD	2 Qtrs
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$128.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$128.00K	USD	1 Quarter
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$164.68M	USD	2 Qtrs
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$164.68M	USD	2 Qtrs
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$84.37M	USD	1 Quarter
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$84.37M	USD	1 Quarter
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$90.26M	USD	1 Quarter
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$90.26M	USD	1 Quarter
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$154.04M	USD	2 Qtrs
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$154.04M	USD	2 Qtrs

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