10-K Filing

SEACOR HOLDINGS INC /NEW/ CIK: 859598 FY 2012

Filing Information

Form Type	10-K
Accession Number	`0000859598-13-000024`
Period End Date	20121231
Filing Date	20130228
Fiscal Year	2012
Fiscal Period	FY
XBRL Instance	ckh-20121231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 125 Income Statement 203 Cash Flow Statement 168 Stockholders Equity 74 Comprehensive Income 41

Balance Sheet 125 line items

Line Item	Tag	Value	Unit	Period
Trade receivables, allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$6.12M	USD	Point-in-time
Trade receivables, allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$3.65M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$460.60M	USD	Point-in-time
Preferred stock, par value	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Preferred stock, par value	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$259.71M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$358.26M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$458.35M	USD	Point-in-time
Preferred stock, shares authorized	`PreferredStockSharesAuthorized`	10.00M	shares	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$21.28M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$28.29M	USD	Point-in-time
Preferred stock, shares authorized	`PreferredStockSharesAuthorized`	10.00M	shares	Point-in-time
Marketable Securities	`MarketableSecurities`	$21.67M	USD	Point-in-time
Marketable Securities	`MarketableSecurities`	$66.90M	USD	Point-in-time
Preferred stock, shares issued	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred stock, shares outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Trade, net of allowance for doubtful accounts of $3,652 and $4,212 in 2011 and 2010, respectively	`AccountsReceivableNetCurrent`	$274.12M	USD	Point-in-time
Common Stock, Par or Stated Value Per Share	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Trade, net of allowance for doubtful accounts of $3,652 and $4,212 in 2011 and 2010, respectively	`AccountsReceivableNetCurrent`	$282.42M	USD	Point-in-time
Common Stock, Par or Stated Value Per Share	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Other	`OtherReceivables`	$49.77M	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Other	`OtherReceivables`	$50.79M	USD	Point-in-time
Common stock, shares issued	`CommonStockSharesIssued`	36.44M	shares	Point-in-time
Inventory, Net	`InventoryNet`	$52.44M	USD	Point-in-time
Inventory, Net	`InventoryNet`	$33.08M	USD	Point-in-time
Common stock, shares issued	`CommonStockSharesIssued`	36.74M	shares	Point-in-time
Inventory, Net	`InventoryNet`	$37.46M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$7.17M	USD	Point-in-time
Treasury stock, shares	`TreasuryStockShares`	15.51M	shares	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetCurrent`	$11.30M	USD	Point-in-time
Treasury stock, shares	`TreasuryStockShares`	16.85M	shares	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$9.09M	USD	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$14.52M	USD	Point-in-time
Assets of Disposal Group, Including Discontinued Operation, Current	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$2.63M	USD	Point-in-time
Assets of Disposal Group, Including Discontinued Operation, Current	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$109.01M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.04B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$718.62M	USD	Point-in-time
Property and Equipment	`PropertyPlantAndEquipmentGross`	$3.38B	USD	Point-in-time
Property and Equipment	`PropertyPlantAndEquipmentGross`	$3.02B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$1.01B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$867.91M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$2.37B	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$1.94B	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$2.15B	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$249.75M	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$307.23M	USD	Point-in-time
Construction Reserve Funds & Title XI Reserve Funds	`ConstructionReserveFundsTitleXiReserveFunds`	$195.63M	USD	Point-in-time
Construction Reserve Funds & Title XI Reserve Funds	`ConstructionReserveFundsTitleXiReserveFunds`	$259.97M	USD	Point-in-time
Goodwill	`Goodwill`	$18.33M	USD	Point-in-time
Goodwill	`Goodwill`	$57.05M	USD	Point-in-time
Goodwill	`Goodwill`	$53.77M	USD	Point-in-time
Intangible Assets, Net	`IntangibleAssetsNetExcludingGoodwill`	$21.53M	USD	Point-in-time
Intangible Assets, Net	`IntangibleAssetsNetExcludingGoodwill`	$19.75M	USD	Point-in-time
Intangible Assets, Net	`IntangibleAssetsNetExcludingGoodwill`	$15.30M	USD	Point-in-time
Other Assets, net of allowance for doubtful accounts of $1,830 in 2010	`OtherAssetsNoncurrent`	$72.99M	USD	Point-in-time
Other Assets, net of allowance for doubtful accounts of $1,830 in 2010	`OtherAssetsNoncurrent`	$102.34M	USD	Point-in-time
Assets of Disposal Group, Including Discontinued Operation, Noncurrent	`AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	-	USD	Point-in-time
Assets of Disposal Group, Including Discontinued Operation, Noncurrent	`AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	$46.83M	USD	Point-in-time
Total Assets	`Assets`	$3.70B	USD	Point-in-time
Total Assets	`Assets`	$3.93B	USD	Point-in-time
Total Assets	`Assets`	$3.76B	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$24.71M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$41.09M	USD	Point-in-time
Current portion of capital lease obligations	`CapitalLeaseObligationsCurrent`	$2.90M	USD	Point-in-time
Current portion of capital lease obligations	`CapitalLeaseObligationsCurrent`	$2.37M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$124.29M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$153.75M	USD	Point-in-time
Accrued wages and benefits	`EmployeeRelatedLiabilitiesCurrent`	$23.88M	USD	Point-in-time
Accrued wages and benefits	`EmployeeRelatedLiabilitiesCurrent`	$34.03M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$7.97M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$6.63M	USD	Point-in-time
Accrued income taxes	`AccruedIncomeTaxesCurrent`	$8.09M	USD	Point-in-time
Accrued income taxes	`AccruedIncomeTaxesCurrent`	$15.81M	USD	Point-in-time
Short sales of marketable securities	`SecuritiesLoaned`	$22.61M	USD	Point-in-time
Short sales of marketable securities	`SecuritiesLoaned`	$8.28M	USD	Point-in-time
Accrued capital, repair and maintenance expenditures	`AccruedCapitalRepairAndMaintenanceExpendituresCurrent`	$8.01M	USD	Point-in-time
Accrued capital, repair and maintenance expenditures	`AccruedCapitalRepairAndMaintenanceExpendituresCurrent`	$7.49M	USD	Point-in-time
Deferred revenues	`DeferredRevenueCurrent`	$15.54M	USD	Point-in-time
Deferred revenues	`DeferredRevenueCurrent`	$9.97M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$42.82M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$52.41M	USD	Point-in-time
Discontinued operations	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$489.00K	USD	Point-in-time
Discontinued operations	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$54.02M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$265.64M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$401.53M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$995.45M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$932.26M	USD	Point-in-time
Capital Lease Obligations	`CapitalLeaseObligationsNoncurrent`	$59.00K	USD	Point-in-time
Capital Lease Obligations	`CapitalLeaseObligationsNoncurrent`	$3.07M	USD	Point-in-time
Deferred Income Taxes	`DeferredTaxLiabilitiesNoncurrent`	$629.55M	USD	Point-in-time
Deferred Income Taxes	`DeferredTaxLiabilitiesNoncurrent`	$567.09M	USD	Point-in-time
Deferred Gains and Other Liabilities	`DeferredGainsAndOtherLiabilities`	$143.26M	USD	Point-in-time
Deferred Gains and Other Liabilities	`DeferredGainsAndOtherLiabilities`	$128.21M	USD	Point-in-time
Liabilities of Disposal Group, Including Discontinued Operation, Noncurrent	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	$2.40M	USD	Point-in-time
Liabilities of Disposal Group, Including Discontinued Operation, Noncurrent	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	$9.67M	USD	Point-in-time
Total liabilities	`Liabilities`	$1.96B	USD	Point-in-time
Total liabilities	`Liabilities`	$2.12B	USD	Point-in-time
Preferred stock, $.01 par value, 10,000,000 shares authorized; none issued nor outstanding	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock, $.01 par value, 10,000,000 shares authorized; none issued nor outstanding	`PreferredStockValue`	-	USD	Point-in-time
Common stock, $.01 par value, 60,000,000 shares authorized; 36,444,439 and 36,110,719 shares issued in 2011 and 2010, respectively	`CommonStockValue`	$364.00K	USD	Point-in-time
Common stock, $.01 par value, 60,000,000 shares authorized; 36,444,439 and 36,110,719 shares issued in 2011 and 2010, respectively	`CommonStockValue`	$367.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.26B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.33B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.47B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.51B	USD	Point-in-time
Shares held in treasury of 15,511,323 and 14,711,211 in 2011 and 2010, respectively, at cost	`TreasuryStockValue`	$971.69M	USD	Point-in-time
Shares held in treasury of 15,511,323 and 14,711,211 in 2011 and 2010, respectively, at cost	`TreasuryStockValue`	$1.09B	USD	Point-in-time
Accumulated Other Comprehensive Income (Loss), Net of Tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.96M	USD	Point-in-time
Accumulated Other Comprehensive Income (Loss), Net of Tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-1.99M	USD	Point-in-time
Accumulated Other Comprehensive Income (Loss), Net of Tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-3.26M	USD	Point-in-time
Accumulated Other Comprehensive Income (Loss), Net of Tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.04M	USD	Point-in-time
Stockholders' equity attributable to parent, total	`StockholdersEquity`	$1.71B	USD	Point-in-time
Stockholders' equity attributable to parent, total	`StockholdersEquity`	$1.79B	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$18.46M	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$29.02M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.81B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.80B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.74B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.97B	USD	Point-in-time
Liabilities and stockholders' equity, total	`LiabilitiesAndStockholdersEquity`	$3.70B	USD	Point-in-time
Liabilities and stockholders' equity, total	`LiabilitiesAndStockholdersEquity`	$3.93B	USD	Point-in-time

Income Statement 203 line items

Line Item	Tag	Value	Unit	Period
Operating Revenues	`Revenues`	$344.64M	USD	1 Quarter
Operating Revenues	`Revenues`	$1.58B	USD	Annual
Operating Revenues	`Revenues`	$1.41B	USD	Annual
Operating Revenues	`Revenues`	$315.99M	USD	1 Quarter
Operating Revenues	`Revenues`	$1.29B	USD	Annual
Operating Revenues	`Revenues`	$271.79M	USD	1 Quarter
Operating Revenues	`Revenues`	$358.20M	USD	1 Quarter
Operating Revenues	`Revenues`	$433.26M	USD	1 Quarter
Operating Revenues	`Revenues`	$372.21M	USD	1 Quarter
Operating Revenues	`Revenues`	$416.84M	USD	1 Quarter
Operating Revenues	`Revenues`	$358.89M	USD	1 Quarter
Operating Expenses	`OperatingExpenses`	$1.14B	USD	Annual
Operating Expenses	`OperatingExpenses`	$908.25M	USD	Annual
Operating Expenses	`OperatingExpenses`	$867.16M	USD	Annual
Administrative and general	`GeneralAndAdministrativeExpense`	$166.46M	USD	Annual
Administrative and general	`GeneralAndAdministrativeExpense`	$201.53M	USD	Annual
Administrative and general	`GeneralAndAdministrativeExpense`	$163.65M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$157.12M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$174.17M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$149.49M	USD	Annual
Total costs and expenses	`CostsAndExpenses`	$1.52B	USD	Annual
Total costs and expenses	`CostsAndExpenses`	$1.22B	USD	Annual
Total costs and expenses	`CostsAndExpenses`	$1.19B	USD	Annual
Gains on Asset Dispositions and Impairments, Net	`LossesGainsOnSalesOfAssetsAndAssetImpairmentCharges`	$-27.60M	USD	Annual
Gains on Asset Dispositions and Impairments, Net	`LossesGainsOnSalesOfAssetsAndAssetImpairmentCharges`	$-34.01M	USD	Annual
Gains on Asset Dispositions and Impairments, Net	`LossesGainsOnSalesOfAssetsAndAssetImpairmentCharges`	$-44.74M	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$103.25M	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$30.20M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$26.26M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$32.35M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$27.69M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$31.15M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$19.09M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$88.46M	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$19.06M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$5.90M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$262.85M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$8.85M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$18.27M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$13.62M	USD	Annual
Interest expense	`InterestExpense`	$43.87M	USD	Annual
Interest expense	`InterestExpense`	$41.13M	USD	Annual
Interest expense	`InterestExpense`	$48.54M	USD	Annual
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-1.46M	USD	Annual
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-160.00K	USD	Annual
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-99.00K	USD	Annual
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$-7.89M	USD	Annual
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$12.89M	USD	Annual
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$-2.16M	USD	Annual
Derivative (gains) losses, net	`GainLossOnDerivativeInstrumentsNetPretax`	$-31.38M	USD	Annual
Derivative (gains) losses, net	`GainLossOnDerivativeInstrumentsNetPretax`	$-3.30M	USD	Annual
Derivative (gains) losses, net	`GainLossOnDerivativeInstrumentsNetPretax`	$6.72M	USD	Annual
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$2.35M	USD	Annual
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-6.06M	USD	Annual
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$1.06M	USD	Annual
Other Nonoperating Income	`OtherNonoperatingIncome`	$7.18M	USD	Annual
Other Nonoperating Income	`OtherNonoperatingIncome`	$3.71M	USD	Annual
Other Nonoperating Income	`OtherNonoperatingIncome`	$1.03M	USD	Annual
Total Other Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-11.31M	USD	Annual
Total Other Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-34.27M	USD	Annual
Total Other Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-64.81M	USD	Annual
Income Before Income Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$38.44M	USD	Annual
Income Before Income Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$228.58M	USD	Annual
Income Before Income Tax Expense (Benefit) and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$77.14M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$-2.93M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$23.53M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$96.81M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-8.92M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-11.91M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$35.11M	USD	Annual
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$14.61M	USD	Annual
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$32.18M	USD	Annual
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$84.89M	USD	Annual
Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeBeforeEquityInEarningsOf50OrLessOwnedCompanies`	$44.97M	USD	Annual
Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeBeforeEquityInEarningsOf50OrLessOwnedCompanies`	$23.82M	USD	Annual
Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeBeforeEquityInEarningsOf50OrLessOwnedCompanies`	$143.69M	USD	Annual
Income (Loss) from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$9.99M	USD	Annual
Income (Loss) from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$12.50M	USD	Annual
Income (Loss) from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$-11.29M	USD	Annual
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$7.18M	USD	1 Quarter
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-8.44M	USD	1 Quarter
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$12.75M	USD	1 Quarter
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$7.85M	USD	1 Quarter
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$14.76M	USD	1 Quarter
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$33.67M	USD	Annual
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$6.04M	USD	1 Quarter
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$156.18M	USD	Annual
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$33.81M	USD	Annual
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$16.88M	USD	1 Quarter
Income from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$10.47M	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$8.34M	USD	Annual
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$89.80M	USD	Annual
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$26.79M	USD	Annual
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$36.37M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$15.50M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$9.37M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$60.46M	USD	Annual
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$11.47M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$42.15M	USD	Annual
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$11.30M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$4.06M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$-2.72M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$17.25M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$245.98M	USD	Annual
Net Income (Loss) Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.09M	USD	Annual
Net Income (Loss) Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-756.00K	USD	Annual
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$3.81M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$9.03M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$16.10M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$41.06M	USD	Annual
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$11.25M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$36.49M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$11.17M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$61.22M	USD	Annual
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$244.72M	USD	Annual
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$17.04M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$-2.62M	USD	1 Quarter
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$32.72M	USD	Annual
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$7.60M	USD	1 Quarter
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$15.36M	USD	1 Quarter
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$10.42M	USD	1 Quarter
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$17.00M	USD	1 Quarter
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$154.92M	USD	Annual
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$34.43M	USD	Annual
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$-8.35M	USD	1 Quarter
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$6.96M	USD	1 Quarter
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$5.71M	USD	1 Quarter
Income (Loss) from Continuing Operations Attributable to Parent	`IncomeLossFromContinuingOperations`	$12.45M	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.33	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.83	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.41	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.36	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.51	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$7.24	USD	Annual
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.27	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.75	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.55	USD	Annual
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.59	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Basic Share	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.69	USD	Annual
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.04	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.95	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.28	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$4.19	USD	Annual
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.04	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.18	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.48	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.06	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.16	USD	1 Quarter
Business Acquisition, Pro Forma Earnings Per Share, Basic	`BusinessAcquisitionProFormaEarningsPerShareBasic`	$2.79	USD	Annual
Business Acquisition, Pro Forma Earnings Per Share, Basic	`BusinessAcquisitionProFormaEarningsPerShareBasic`	$2.26	USD	Annual
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$0.43	USD	1 Quarter
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$1.94	USD	Annual
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$0.79	USD	1 Quarter
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$11.43	USD	Annual
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$0.18	USD	1 Quarter
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$0.55	USD	1 Quarter
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$-0.13	USD	1 Quarter
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$0.53	USD	1 Quarter
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$0.81	USD	1 Quarter
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$3.00	USD	Annual
Basic Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareBasic`	$1.78	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.33	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$7.12	USD	Annual
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.27	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.52	USD	Annual
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.58	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.81	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.74	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.41	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.50	USD	1 Quarter
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.66	USD	Annual
Income (Loss) from Continuing Operations, Per Diluted Share	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.35	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.28	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.17	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.06	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.15	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$4.13	USD	Annual
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.94	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.04	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.47	USD	1 Quarter
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.04	USD	1 Quarter
Business Acquisition, Pro Forma Earnings Per Share, Diluted	`BusinessAcquisitionProFormaEarningsPerShareDiluted`	$2.75	USD	Annual
Business Acquisition, Pro Forma Earnings Per Share, Diluted	`BusinessAcquisitionProFormaEarningsPerShareDiluted`	$2.22	USD	Annual
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$1.75	USD	1 Quarter
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$0.78	USD	1 Quarter
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	-	USD	1 Quarter
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$0.52	USD	1 Quarter
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$1.00	USD	1 Quarter
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$11.25	USD	Annual
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$1.91	USD	Annual
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$0.42	USD	1 Quarter
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$0.54	USD	1 Quarter
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$2.95	USD	Annual
Diluted Earnings Per Common Share of SEACOR Holdings Inc.	`EarningsPerShareDiluted`	$0.18	USD	1 Quarter
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	20.43M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	21.40M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	21.12M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	21.47M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	20.78M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	21.76M	shares	Annual
Common Stock, Dividends, Per Share, Cash Paid	`CommonStockDividendsPerShareCashPaid`	$15.00	USD	Annual
Common Stock, Dividends, Per Share, Cash Paid	`CommonStockDividendsPerShareCashPaid`	$5.00	USD	Annual
Common Stock, Dividends, Per Share, Cash Paid	`CommonStockDividendsPerShareCashPaid`	-	USD	Annual

Cash Flow Statement 168 line items

Line Item	Tag	Value	Unit	Period
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$157.12M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$174.17M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$149.49M	USD	Annual
Amortization of deferred gains on sale and leaseback transactions	`AmortizationOfDeferredGainsOnSaleAndLeasebackTransactions`	$16.65M	USD	Annual
Amortization of deferred gains on sale and leaseback transactions	`AmortizationOfDeferredGainsOnSaleAndLeasebackTransactions`	$22.19M	USD	Annual
Amortization of deferred gains on sale and leaseback transactions	`AmortizationOfDeferredGainsOnSaleAndLeasebackTransactions`	$17.82M	USD	Annual
Debt discount amortization, net	`AmortizationOfDebtDiscountPremium`	$1.28M	USD	Annual
Debt discount amortization, net	`AmortizationOfDebtDiscountPremium`	$768.00K	USD	Annual
Debt discount amortization, net	`AmortizationOfDebtDiscountPremium`	$828.00K	USD	Annual
Amortization of share awards	`AmortizationOfESOPAward`	$-19.25M	USD	Annual
Amortization of share awards	`AmortizationOfESOPAward`	$-21.59M	USD	Annual
Amortization of share awards	`AmortizationOfESOPAward`	$-32.93M	USD	Annual
Director stock awards	`DirectorStockAwards`	$359.00K	USD	Annual
Director stock awards	`DirectorStockAwards`	$303.00K	USD	Annual
Director stock awards	`DirectorStockAwards`	$357.00K	USD	Annual
Bad debt expense (income)	`ProvisionForDoubtfulAccounts`	$341.00K	USD	Annual
Bad debt expense (income)	`ProvisionForDoubtfulAccounts`	$-36.00K	USD	Annual
Bad debt expense (income)	`ProvisionForDoubtfulAccounts`	$4.11M	USD	Annual
Gains on asset dispositions and impairments, net	`GainsOnAssetDispositionsAndImpairmentsNet`	$27.60M	USD	Annual
Gains on asset dispositions and impairments, net	`GainsOnAssetDispositionsAndImpairmentsNet`	$44.74M	USD	Annual
Gains on asset dispositions and impairments, net	`GainsOnAssetDispositionsAndImpairmentsNet`	$34.01M	USD	Annual
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-1.46M	USD	Annual
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-160.00K	USD	Annual
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-99.00K	USD	Annual
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$-7.89M	USD	Annual
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$12.89M	USD	Annual
Marketable security gains (losses), net	`MarketableSecuritiesGainLoss`	$-2.16M	USD	Annual
Purchases of marketable securities	`PaymentsForPurchaseOfSecuritiesOperatingActivities`	$40.40M	USD	Annual
Purchases of marketable securities	`PaymentsForPurchaseOfSecuritiesOperatingActivities`	$107.72M	USD	Annual
Purchases of marketable securities	`PaymentsForPurchaseOfSecuritiesOperatingActivities`	$117.14M	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleOfSecuritiesOperatingActivities`	$36.54M	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleOfSecuritiesOperatingActivities`	$178.02M	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleOfSecuritiesOperatingActivities`	$44.99M	USD	Annual
Derivative (gains) losses, net	`GainLossOnDerivativeInstrumentsNetPretax`	$-31.38M	USD	Annual
Derivative (gains) losses, net	`GainLossOnDerivativeInstrumentsNetPretax`	$-3.30M	USD	Annual
Derivative (gains) losses, net	`GainLossOnDerivativeInstrumentsNetPretax`	$6.72M	USD	Annual
Cash settlements on derivative transactions, net	`PaymentsForProceedsFromDerivativeInstrumentOperatingActivities`	$12.29M	USD	Annual
Cash settlements on derivative transactions, net	`PaymentsForProceedsFromDerivativeInstrumentOperatingActivities`	$20.64M	USD	Annual
Cash settlements on derivative transactions, net	`PaymentsForProceedsFromDerivativeInstrumentOperatingActivities`	$6.86M	USD	Annual
Foreign currency (gains) losses, net	`ForeignCurrencyTransactionGainLossBeforeTax`	$2.35M	USD	Annual
Foreign currency (gains) losses, net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-6.06M	USD	Annual
Foreign currency (gains) losses, net	`ForeignCurrencyTransactionGainLossBeforeTax`	$1.06M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$-8.92M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$-11.91M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$35.11M	USD	Annual
Equity in earnings of 50% or less owned companies, net of tax	`IncomeLossFromEquityMethodInvestments`	$9.99M	USD	Annual
Equity in earnings of 50% or less owned companies, net of tax	`IncomeLossFromEquityMethodInvestments`	$12.50M	USD	Annual
Equity in earnings of 50% or less owned companies, net of tax	`IncomeLossFromEquityMethodInvestments`	$-11.29M	USD	Annual
Dividends received from 50% or less owned companies	`ProceedsFromDividendsReceived`	$9.58M	USD	Annual
Dividends received from 50% or less owned companies	`ProceedsFromDividendsReceived`	$6.59M	USD	Annual
Dividends received from 50% or less owned companies	`ProceedsFromDividendsReceived`	$17.91M	USD	Annual
Other, net	`PaymentsForOtherOperatingActivities`	$-2.36M	USD	Annual
Other, net	`PaymentsForOtherOperatingActivities`	$280.00K	USD	Annual
Other, net	`PaymentsForOtherOperatingActivities`	$-509.00K	USD	Annual
(Increase) decrease in receivables	`IncreaseDecreaseInReceivables`	$27.87M	USD	Annual
(Increase) decrease in receivables	`IncreaseDecreaseInReceivables`	$-9.26M	USD	Annual
(Increase) decrease in receivables	`IncreaseDecreaseInReceivables`	$-23.51M	USD	Annual
(Increase) decrease in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-4.50M	USD	Annual
(Increase) decrease in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-23.44M	USD	Annual
(Increase) decrease in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$7.64M	USD	Annual
Increase (decrease) in accounts payable, accrued expenses and other liabilities	`IncreaseDecreaseInAccountsPayableAccruedExpensesAndOtherLiabilities`	$-53.17M	USD	Annual
Increase (decrease) in accounts payable, accrued expenses and other liabilities	`IncreaseDecreaseInAccountsPayableAccruedExpensesAndOtherLiabilities`	$-7.16M	USD	Annual
Increase (decrease) in accounts payable, accrued expenses and other liabilities	`IncreaseDecreaseInAccountsPayableAccruedExpensesAndOtherLiabilities`	$72.74M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$176.90M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$317.69M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$190.28M	USD	Annual
Payments to Acquire Property, Plant, and Equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$352.34M	USD	Annual
Payments to Acquire Property, Plant, and Equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$324.19M	USD	Annual
Payments to Acquire Property, Plant, and Equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$243.40M	USD	Annual
Proceeds from Sale of Property, Plant, and Equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$101.78M	USD	Annual
Proceeds from Sale of Property, Plant, and Equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$360.29M	USD	Annual
Proceeds from Sale of Property, Plant and Equipment, Excluding Deposits on Future Equipment Sales	`ProceedsFromSaleOfPropertyPlantAndEquipmentExcludingDepositsOnFutureEquipmentSales`	$355.00M	USD	Annual
Proceeds from Sale of Property, Plant and Equipment, Excluding Deposits on Future Equipment Sales	`ProceedsFromSaleOfPropertyPlantAndEquipmentExcludingDepositsOnFutureEquipmentSales`	$119.20M	USD	Annual
Proceeds from Sale of Property, Plant and Equipment, Excluding Deposits on Future Equipment Sales	`ProceedsFromSaleOfPropertyPlantAndEquipmentExcludingDepositsOnFutureEquipmentSales`	$96.80M	USD	Annual
Cash settlements on derivative transactions, net	`PaymentsForProceedsFromHedgeInvestingActivities`	$471.00K	USD	Annual
Cash settlements on derivative transactions, net	`PaymentsForProceedsFromHedgeInvestingActivities`	-	USD	Annual
Cash settlements on derivative transactions, net	`PaymentsForProceedsFromHedgeInvestingActivities`	$-6.11M	USD	Annual
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$58.61M	USD	Annual
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$56.20M	USD	Annual
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$63.04M	USD	Annual
Return of investments and advances from 50% or less owned companies	`ReturnOfInvestmentsAndAdvancesFromFiftyPercentOrLessOwnedCompanies`	$15.12M	USD	Annual
Return of investments and advances from 50% or less owned companies	`ReturnOfInvestmentsAndAdvancesFromFiftyPercentOrLessOwnedCompanies`	$22.31M	USD	Annual
Return of investments and advances from 50% or less owned companies	`ReturnOfInvestmentsAndAdvancesFromFiftyPercentOrLessOwnedCompanies`	$89.85M	USD	Annual
Net advances on revolving credit line to 50% or less owned companies	`NetAdvancesOnRevolvingCreditLineToFiftyPercentOrLessOwnedCompanies`	$9.07M	USD	Annual
Net advances on revolving credit line to 50% or less owned companies	`NetAdvancesOnRevolvingCreditLineToFiftyPercentOrLessOwnedCompanies`	$300.00K	USD	Annual
Net advances on revolving credit line to 50% or less owned companies	`NetAdvancesOnRevolvingCreditLineToFiftyPercentOrLessOwnedCompanies`	$4.34M	USD	Annual
(Advances) principal payments on third party notes receivable, net	`CashInflowAndOutflowFromNotesReceivable`	$-36.20M	USD	Annual
(Advances) principal payments on third party notes receivable, net	`CashInflowAndOutflowFromNotesReceivable`	$-5.34M	USD	Annual
(Advances) principal payments on third party notes receivable, net	`CashInflowAndOutflowFromNotesReceivable`	$33.72M	USD	Annual
Net (increase) decrease in restricted cash	`IncreaseDecreaseInRestrictedCash`	$7.00M	USD	Annual
Net (increase) decrease in restricted cash	`IncreaseDecreaseInRestrictedCash`	$-21.36M	USD	Annual
Net (increase) decrease in restricted cash	`IncreaseDecreaseInRestrictedCash`	$8.63M	USD	Annual
Net (increase) decrease in construction reserve funds and title XI funds	`NetDecreaseInConstructionReserveFundsAndTitleXiReserveFunds`	$-63.91M	USD	Annual
Net (increase) decrease in construction reserve funds and title XI funds	`NetDecreaseInConstructionReserveFundsAndTitleXiReserveFunds`	$34.13M	USD	Annual
Net (increase) decrease in construction reserve funds and title XI funds	`NetDecreaseInConstructionReserveFundsAndTitleXiReserveFunds`	$-64.34M	USD	Annual
Repayments on (investments in) leases, net	`RepaymentsOnInvestmentsInLeases`	$-8.98M	USD	Annual
Repayments on (investments in) leases, net	`RepaymentsOnInvestmentsInLeases`	$15.03M	USD	Annual
Repayments on (investments in) leases, net	`RepaymentsOnInvestmentsInLeases`	$-3.40M	USD	Annual
Business acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$90.59M	USD	Annual
Business acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$5.60M	USD	Annual
Business acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$148.09M	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-323.90M	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$25.12M	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-253.39M	USD	Annual
Payments on long-term debt and capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	$39.59M	USD	Annual
Payments on long-term debt and capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	$776.94M	USD	Annual
Payments on long-term debt and capital lease obligations	`RepaymentsOfDebtAndCapitalLeaseObligations`	$92.85M	USD	Annual
Net borrowings (repayments) under inventory financing arrangements	`NetPaymentsOnInventoryFinancingArrangements`	$21.65M	USD	Annual
Net borrowings (repayments) under inventory financing arrangements	`NetPaymentsOnInventoryFinancingArrangements`	$14.60M	USD	Annual
Net borrowings (repayments) under inventory financing arrangements	`NetPaymentsOnInventoryFinancingArrangements`	$-20.21M	USD	Annual
Proceeds from issuance of long-term debt, net of offering costs	`ProceedsFromIssuanceOfDebt`	$693.92M	USD	Annual
Proceeds from issuance of long-term debt, net of offering costs	`ProceedsFromIssuanceOfDebt`	$38.67M	USD	Annual
Proceeds from issuance of long-term debt, net of offering costs	`ProceedsFromIssuanceOfDebt`	$301.83M	USD	Annual
Proceeds from issuance of conversion option in convertible debt, net of offering costs	`ProceedsFromConvertibleDebt`	-	USD	Annual
Proceeds from issuance of conversion option in convertible debt, net of offering costs	`ProceedsFromConvertibleDebt`	-	USD	Annual
Proceeds from issuance of conversion option in convertible debt, net of offering costs	`ProceedsFromConvertibleDebt`	$48.24M	USD	Annual
Dividends, Common Stock, Cash	`DividendsCommonStockCash`	$-319.68M	USD	Annual
Dividends, Common Stock, Cash	`DividendsCommonStockCash`	$-100.39M	USD	Annual
Dividends, Common Stock, Cash	`DividendsCommonStockCash`	-	USD	Annual
Dividends, Cash	`DividendsCash`	$319.70M	USD	Annual
Dividends, Cash	`DividendsCash`	$100.40M	USD	Annual
Common stock acquired for treasury	`PaymentsForRepurchaseOfCommonStock`	$137.07M	USD	Annual
Common stock acquired for treasury	`PaymentsForRepurchaseOfCommonStock`	$119.55M	USD	Annual
Common stock acquired for treasury	`PaymentsForRepurchaseOfCommonStock`	$71.29M	USD	Annual
Proceeds and tax benefits from the share award plans	`ProceedsAndTaxBenefitsFromShareAwardPlans`	$11.89M	USD	Annual
Proceeds and tax benefits from the share award plans	`ProceedsAndTaxBenefitsFromShareAwardPlans`	$26.23M	USD	Annual
Proceeds and tax benefits from the share award plans	`ProceedsAndTaxBenefitsFromShareAwardPlans`	$11.68M	USD	Annual
Purchase of subsidiary shares from noncontrolling interests	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	$39.00K	USD	Annual
Purchase of subsidiary shares from noncontrolling interests	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	$1.15M	USD	Annual
Purchase of subsidiary shares from noncontrolling interests	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	-	USD	Annual
Cash received from (dividends paid to) noncontrolling interests, net	`CashReceivedFromDividendsPaidToNoncontrollingInterests`	$2.82M	USD	Annual
Cash received from (dividends paid to) noncontrolling interests, net	`CashReceivedFromDividendsPaidToNoncontrollingInterests`	$-285.00K	USD	Annual
Cash received from (dividends paid to) noncontrolling interests, net	`CashReceivedFromDividendsPaidToNoncontrollingInterests`	$915.00K	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$220.98M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-260.45M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-506.11M	USD	Annual
Effects of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	$2.01M	USD	Annual
Effects of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	$2.69M	USD	Annual
Effects of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations`	$-8.08M	USD	Annual
Net Increase (Decrease) in Cash and Cash Equivalents from Continuing Operations	`NetCashProvidedByUsedInContinuingOperations`	$-171.38M	USD	Annual
Net Increase (Decrease) in Cash and Cash Equivalents from Continuing Operations	`NetCashProvidedByUsedInContinuingOperations`	$75.99M	USD	Annual
Net Increase (Decrease) in Cash and Cash Equivalents from Continuing Operations	`NetCashProvidedByUsedInContinuingOperations`	$-320.87M	USD	Annual
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$34.46M	USD	Annual
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$77.51M	USD	Annual
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$12.80M	USD	Annual
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$107.10M	USD	Annual
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-8.06M	USD	Annual
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-5.89M	USD	Annual
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	Annual
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	$-405.00K	USD	Annual
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations`	$74.00K	USD	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations`	$72.00K	USD	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations`	$-47.00K	USD	Annual
Net Increase in Cash and Cash Equivalents from Discontinued Operations	`NetCashProvidedByUsedInDiscontinuedOperations`	$119.98M	USD	Annual
Net Increase in Cash and Cash Equivalents from Discontinued Operations	`NetCashProvidedByUsedInDiscontinuedOperations`	$71.29M	USD	Annual
Net Increase in Cash and Cash Equivalents from Discontinued Operations	`NetCashProvidedByUsedInDiscontinuedOperations`	$26.36M	USD	Annual
Net Increase (Decrease) in Cash and Cash Equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$102.34M	USD	Annual
Net Increase (Decrease) in Cash and Cash Equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-200.90M	USD	Annual
Net Increase (Decrease) in Cash and Cash Equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-100.09M	USD	Annual
Cash and Cash Equivalents, Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	$460.60M	USD	Point-in-time
Cash and Cash Equivalents, Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	$259.71M	USD	Point-in-time
Cash and Cash Equivalents, Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	$358.26M	USD	Point-in-time
Cash and Cash Equivalents, Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	$458.35M	USD	Point-in-time
Cash and Cash Equivalents, End of Year	`CashAndCashEquivalentsAtCarryingValue`	$460.60M	USD	Point-in-time
Cash and Cash Equivalents, End of Year	`CashAndCashEquivalentsAtCarryingValue`	$259.71M	USD	Point-in-time
Cash and Cash Equivalents, End of Year	`CashAndCashEquivalentsAtCarryingValue`	$358.26M	USD	Point-in-time
Cash and Cash Equivalents, End of Year	`CashAndCashEquivalentsAtCarryingValue`	$458.35M	USD	Point-in-time

Stockholders Equity 74 line items

Line Item	Tag	Value	Unit	Period
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.81B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.80B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.74B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.97B	USD	Point-in-time
Employee Stock Purchase Plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$2.97M	USD	Annual
Employee Stock Purchase Plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$2.55M	USD	Annual
Employee Stock Purchase Plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$2.96M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$8.78M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$8.25M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$21.56M	USD	Annual
Director stock awards	`StockIssuedDuringPeriodValueDirectorStockAwards`	$-319.00K	USD	Annual
Director stock awards	`StockIssuedDuringPeriodValueDirectorStockAwards`	$-363.00K	USD	Annual
Director stock awards	`StockIssuedDuringPeriodValueDirectorStockAwards`	$-359.00K	USD	Annual
Restricted stock and restricted stock units	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	$126.00K	USD	Annual
Restricted stock and restricted stock units	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	$348.00K	USD	Annual
Restricted stock and restricted stock units	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	$2.08M	USD	Annual
Stock Issued During Period, Value, Acquisitions	`StockIssuedDuringPeriodValueAcquisitions`	$585.00K	USD	Annual
Stock Issued During Period, Value, Acquisitions	`StockIssuedDuringPeriodValueAcquisitions`	-	USD	Annual
Stock Issued During Period, Value, Acquisitions	`StockIssuedDuringPeriodValueAcquisitions`	-	USD	Annual
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt	`AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt`	$31.36M	USD	Annual
Dividends, Common Stock, Cash	`DividendsCommonStockCash`	$-319.68M	USD	Annual
Dividends, Common Stock, Cash	`DividendsCommonStockCash`	$-100.39M	USD	Annual
Dividends, Common Stock, Cash	`DividendsCommonStockCash`	-	USD	Annual
Stock Repurchased During Period, Value	`StockRepurchasedDuringPeriodValue`	$-119.55M	USD	Annual
Stock Repurchased During Period, Value	`StockRepurchasedDuringPeriodValue`	$-137.07M	USD	Annual
Stock Repurchased During Period, Value	`StockRepurchasedDuringPeriodValue`	$-71.29M	USD	Annual
Amortization of share awards	`AmortizationOfESOPAward`	$-19.25M	USD	Annual
Amortization of share awards	`AmortizationOfESOPAward`	$-21.59M	USD	Annual
Amortization of share awards	`AmortizationOfESOPAward`	$-32.93M	USD	Annual
Cancellation of restricted stock	`StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures`	-	USD	Annual
Cancellation of restricted stock	`StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures`	-	USD	Annual
Cancellation of restricted stock	`StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures`	-	USD	Annual
Purchase of subsidiary shares from noncontrolling interests	`AdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest`	$-39.00K	USD	Annual
Purchase of subsidiary shares from noncontrolling interests	`AdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest`	$-2.40M	USD	Annual
Acquisition of subsidiary with noncontrolling interests	`MinorityInterestDecreaseFromRedemptions`	$-10.28M	USD	Annual
Acquisition of subsidiary with noncontrolling interests	`MinorityInterestDecreaseFromRedemptions`	$-13.71M	USD	Annual
Disposition of subsidiary with noncontrolling interests	`DispositionOfSubsidiaryWithNoncontrollingInterests`	$-49.00K	USD	Annual
Noncontrolling Interest, Increase from Equity Issuance or Sale of Parent Equity Interest	`MinorityInterestIncreaseFromStockIssuance`	$1.85M	USD	Annual
Noncontrolling Interest, Increase from Equity Issuance or Sale of Parent Equity Interest	`MinorityInterestIncreaseFromStockIssuance`	$83.00K	USD	Annual
Noncontrolling Interest, Increase from Equity Issuance or Sale of Parent Equity Interest	`MinorityInterestIncreaseFromStockIssuance`	$1.41M	USD	Annual
Dividends paid to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$-2.90M	USD	Annual
Dividends paid to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$-1.12M	USD	Annual
Dividends paid to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$-2.64M	USD	Annual
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$3.81M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$9.03M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$16.10M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$41.06M	USD	Annual
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$11.25M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$36.49M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$11.17M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$61.22M	USD	Annual
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$244.72M	USD	Annual
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$17.04M	USD	1 Quarter
Net Income attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$-2.62M	USD	1 Quarter
Net Income (Loss) Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.09M	USD	Annual
Net Income (Loss) Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-756.00K	USD	Annual
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$36.37M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$15.50M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$9.37M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$60.46M	USD	Annual
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$11.47M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$42.15M	USD	Annual
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$11.30M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$4.06M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$-2.72M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$17.25M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$245.98M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease`	$-3.78M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease`	$-1.04M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease`	$6.40M	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.81B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.80B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.74B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.97B	USD	Point-in-time

Comprehensive Income 41 line items

Line Item	Tag	Value	Unit	Period
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$36.37M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$15.50M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$9.37M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$60.46M	USD	Annual
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$11.47M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$42.15M	USD	Annual
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$11.30M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$4.06M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$-2.72M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$17.25M	USD	1 Quarter
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	`ProfitLoss`	$245.98M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPeriodIncreaseDecrease`	$-1.09M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPeriodIncreaseDecrease`	$-1.45M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPeriodIncreaseDecrease`	$5.24M	USD	Annual
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$342.00K	USD	Annual
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$75.00K	USD	Annual
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$4.00K	USD	Annual
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax	`OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax`	-	USD	Annual
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax	`OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax`	$3.27M	USD	Annual
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax	`OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax`	-	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease`	$116.00K	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease`	$21.00K	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease`	$-171.00K	USD	Annual
Other Comprehensive Income (Loss), before Tax	`OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecrease`	$9.62M	USD	Annual
Other Comprehensive Income (Loss), before Tax	`OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecrease`	$-1.53M	USD	Annual
Other Comprehensive Income (Loss), before Tax	`OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecrease`	$-5.81M	USD	Annual
Income tax (expense) benefit, Accumulated Other Comprehensive Loss	`OtherComprehensiveIncomeLossTax`	$-494.00K	USD	Annual
Income tax (expense) benefit, Accumulated Other Comprehensive Loss	`OtherComprehensiveIncomeLossTax`	$3.22M	USD	Annual
Income tax (expense) benefit, Accumulated Other Comprehensive Loss	`OtherComprehensiveIncomeLossTax`	$-2.03M	USD	Annual
Other comprehensive income (loss), Net-of-Tax Amount	`OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease`	$-3.78M	USD	Annual
Other comprehensive income (loss), Net-of-Tax Amount	`OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease`	$-1.04M	USD	Annual
Other comprehensive income (loss), Net-of-Tax Amount	`OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease`	$6.40M	USD	Annual
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$66.86M	USD	Annual
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$242.21M	USD	Annual
Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$41.11M	USD	Annual
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-327.00K	USD	Annual
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.26M	USD	Annual
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$976.00K	USD	Annual
Comprehensive Income attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$40.14M	USD	Annual
Comprehensive Income attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$67.19M	USD	Annual
Comprehensive Income attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$240.94M	USD	Annual

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