10-K Filing

SEACOR HOLDINGS INC /NEW/ CIK: 859598 FY 2018

Filing Information

Form Type	10-K
Accession Number	`0000859598-19-000005`
Period End Date	20181231
Filing Date	20190227
Fiscal Year	2018
Fiscal Period	FY
XBRL Instance	ckh-20181231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 105 Income Statement 188 Cash Flow Statement 171 Stockholders Equity 58 Comprehensive Income 41

Balance Sheet 105 line items

Line Item	Tag	Value	Unit	Period
Trade receivables, allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$2.39M	USD	Point-in-time
Trade receivables, allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$3.48M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$144.22M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$256.64M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$239.25M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Restricted cash and restricted cash equivalents	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$2.99M	USD	Point-in-time
Restricted cash and restricted cash equivalents	`RestrictedCashAndCashEquivalentsAtCarryingValue`	$2.98M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	39.00M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	38.66M	shares	Point-in-time
Treasury stock, shares (in shares)	`TreasuryStockShares`	20.67M	shares	Point-in-time
Treasury stock, shares (in shares)	`TreasuryStockShares`	20.72M	shares	Point-in-time
Marketable securities	`MarketableSecuritiesCurrent`	$30.32M	USD	Point-in-time
Marketable securities	`MarketableSecuritiesCurrent`	$42.76M	USD	Point-in-time
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	10.00M	shares	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	10.00M	shares	Point-in-time
Trade, net of allowance for doubtful accounts of $3,481 and $2,390 in 2018 and 2017, respectively	`AccountsReceivableNetCurrent`	$171.83M	USD	Point-in-time
Trade, net of allowance for doubtful accounts of $3,481 and $2,390 in 2018 and 2017, respectively	`AccountsReceivableNetCurrent`	$110.47M	USD	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Other	`OtherReceivablesNetCurrent`	$38.88M	USD	Point-in-time
Other	`OtherReceivablesNetCurrent`	$33.87M	USD	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Inventories	`InventoryNet`	$2.58M	USD	Point-in-time
Inventories	`InventoryNet`	$4.38M	USD	Point-in-time
Inventories	`InventoryNet`	$4.53M	USD	Point-in-time
Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$5.38M	USD	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$6.59M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$398.15M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$440.30M	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$1.42B	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$1.38B	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$1.41B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$502.54M	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$444.56M	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$560.82M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$980.01M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$877.92M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$846.51M	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$173.44M	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$175.46M	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$156.89M	USD	Point-in-time
Construction Reserve Funds	`RestrictedCashAndCashEquivalentsNoncurrent`	$51.34M	USD	Point-in-time
Construction Reserve Funds	`RestrictedCashAndCashEquivalentsNoncurrent`	$3.91M	USD	Point-in-time
Goodwill	`Goodwill`	$32.76M	USD	Point-in-time
Goodwill	`Goodwill`	$32.76M	USD	Point-in-time
Goodwill	`Goodwill`	$32.71M	USD	Point-in-time
Intangible Assets, Net	`IntangibleAssetsNetExcludingGoodwill`	$20.08M	USD	Point-in-time
Intangible Assets, Net	`IntangibleAssetsNetExcludingGoodwill`	$28.11M	USD	Point-in-time
Intangible Assets, Net	`IntangibleAssetsNetExcludingGoodwill`	$24.55M	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$8.31M	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$9.47M	USD	Point-in-time
Total Assets	`Assets`	$1.61B	USD	Point-in-time
Total Assets	`Assets`	$1.47B	USD	Point-in-time
Total Assets	`Assets`	$2.86B	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$77.84M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtCurrent`	$8.50M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$44.01M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$59.61M	USD	Point-in-time
Accrued wages and benefits	`EmployeeRelatedLiabilitiesCurrent`	$14.62M	USD	Point-in-time
Accrued wages and benefits	`EmployeeRelatedLiabilitiesCurrent`	$21.20M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$4.21M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$1.18M	USD	Point-in-time
Accrued capital, repair and maintenance expenditures	`AccruedCapitalRepairandMaintenanceExpenditures`	$2.17M	USD	Point-in-time
Accrued capital, repair and maintenance expenditures	`AccruedCapitalRepairandMaintenanceExpenditures`	$3.25M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$36.33M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$30.02M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$123.76M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$179.19M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$501.50M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$346.13M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$101.42M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$94.42M	USD	Point-in-time
Deferred Gains and Other Liabilities	`DeferredGainsandOtherLiabilitiesNoncurrent`	$77.86M	USD	Point-in-time
Deferred Gains and Other Liabilities	`DeferredGainsandOtherLiabilitiesNoncurrent`	$52.87M	USD	Point-in-time
Total liabilities	`Liabilities`	$859.98M	USD	Point-in-time
Total liabilities	`Liabilities`	$617.18M	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; 39,001,924 and 38,656,505 shares issued in 2018 and 2017, respectively	`CommonStockValue`	$390.00K	USD	Point-in-time
Common stock, $.01 par value, 60,000,000 shares authorized; 39,001,924 and 38,656,505 shares issued in 2018 and 2017, respectively	`CommonStockValue`	$387.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.57B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.60B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$419.13M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$474.81M	USD	Point-in-time
Shares held in treasury of 20,671,627 and 20,716,878 in 2018 and 2017, respectively, at cost	`TreasuryStockValue`	$1.37B	USD	Point-in-time
Shares held in treasury of 20,671,627 and 20,716,878 in 2018 and 2017, respectively, at cost	`TreasuryStockValue`	$1.37B	USD	Point-in-time
Accumulated other comprehensive loss, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-914.00K	USD	Point-in-time
Accumulated other comprehensive loss, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-545.00K	USD	Point-in-time
Stockholders' equity attributable to SEACOR Holdings Inc.	`StockholdersEquity`	$623.68M	USD	Point-in-time
Stockholders' equity attributable to SEACOR Holdings Inc.	`StockholdersEquity`	$704.15M	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$149.69M	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$129.68M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$853.84M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.39B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$753.36M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.20B	USD	Point-in-time
Liabilities and stockholders' equity, total	`LiabilitiesAndStockholdersEquity`	$1.61B	USD	Point-in-time
Liabilities and stockholders' equity, total	`LiabilitiesAndStockholdersEquity`	$1.47B	USD	Point-in-time

Income Statement 188 line items

Line Item	Tag	Value	Unit	Period
Operating Revenues	`Revenues`	$176.60M	USD	1 Quarter
Operating Revenues	`Revenues`	$216.83M	USD	1 Quarter
Operating Revenues	`Revenues`	$524.16M	USD	Annual
Operating Revenues	`Revenues`	$650.85M	USD	Annual
Operating Revenues	`Revenues`	$209.35M	USD	1 Quarter
Operating Revenues	`Revenues`	$184.82M	USD	1 Quarter
Operating Revenues	`Revenues`	$835.75M	USD	Annual
Operating Revenues	`Revenues`	$128.57M	USD	1 Quarter
Operating Revenues	`Revenues`	$213.84M	USD	1 Quarter
Operating Revenues	`Revenues`	$136.32M	USD	1 Quarter
Operating Revenues	`Revenues`	$220.26M	USD	1 Quarter
Operating	`OperatingCostsandExpenseExcludingDepreciationandAmortization`	$591.85M	USD	Annual
Operating	`OperatingCostsandExpenseExcludingDepreciationandAmortization`	$358.95M	USD	Annual
Operating	`OperatingCostsandExpenseExcludingDepreciationandAmortization`	$433.84M	USD	Annual
Administrative and general	`GeneralAndAdministrativeExpense`	$86.36M	USD	Annual
Administrative and general	`GeneralAndAdministrativeExpense`	$103.11M	USD	Annual
Administrative and general	`GeneralAndAdministrativeExpense`	$102.91M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$75.06M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$74.58M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$62.56M	USD	Annual
Total costs and expenses	`CostsAndExpenses`	$612.00M	USD	Annual
Total costs and expenses	`CostsAndExpenses`	$769.33M	USD	Annual
Total costs and expenses	`CostsAndExpenses`	$507.88M	USD	Annual
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-25.98M	USD	Annual
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$19.58M	USD	Annual
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$11.64M	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$50.48M	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$-9.70M	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$22.98M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$25.25M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$15.09M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$14.69M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$86.00M	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$12.01M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$8.99M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$34.05M	USD	1 Quarter
Operating Income (Loss)	`OperatingIncomeLoss`	$3.42M	USD	1 Quarter
Interest income	`InvestmentIncomeInterest`	$15.64M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$8.73M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$8.55M	USD	Annual
Interest expense	`InterestExpense`	$39.80M	USD	Annual
Interest expense	`InterestExpense`	$41.53M	USD	Annual
Interest expense	`InterestExpense`	$31.68M	USD	Annual
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-819.00K	USD	Annual
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$5.18M	USD	Annual
Debt extinguishment gains (losses), net	`GainsLossesOnExtinguishmentOfDebt`	$-11.63M	USD	Annual
Marketable security losses, net	`MarketableSecuritiesGainLoss`	$-12.43M	USD	Annual
Marketable security losses, net	`MarketableSecuritiesGainLoss`	$-1.78M	USD	Annual
Marketable security losses, net	`MarketableSecuritiesGainLoss`	$-32.15M	USD	Annual
Derivative gains (losses), net	`GainLossOnDerivativeInstrumentsNetPretax`	$-14.13M	USD	Annual
Derivative gains (losses), net	`GainLossOnDerivativeInstrumentsNetPretax`	$19.73M	USD	Annual
Derivative gains (losses), net	`GainLossOnDerivativeInstrumentsNetPretax`	-	USD	Annual
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-2.26M	USD	Annual
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$323.00K	USD	Annual
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$1.44M	USD	Annual
Other, net	`OtherNonoperatingIncomeExpense`	$54.96M	USD	Annual
Other, net	`OtherNonoperatingIncomeExpense`	$-18.72M	USD	Annual
Other, net	`OtherNonoperatingIncomeExpense`	$256.00K	USD	Annual
Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-82.54M	USD	Annual
Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$-15.28M	USD	Annual
Nonoperating Income (Expense)	`NonoperatingIncomeExpense`	$5.69M	USD	Annual
Income (Loss) from Continuing Operations Before Income Tax Expense (Benefit) and Equity in Earnings (Losses) of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$91.69M	USD	Annual
Income (Loss) from Continuing Operations Before Income Tax Expense (Benefit) and Equity in Earnings (Losses) of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$35.20M	USD	Annual
Income (Loss) from Continuing Operations Before Income Tax Expense (Benefit) and Equity in Earnings (Losses) of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-92.24M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$-15.71M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$23.93M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$12.21M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-51.48M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-15.51M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-48.93M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$8.41M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-67.19M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-36.73M	USD	Annual
Income (Loss) from Continuing Operations Before Equity in Earnings (Losses) of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsNoncontrollingInterest`	$83.27M	USD	Annual
Income (Loss) from Continuing Operations Before Equity in Earnings (Losses) of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsNoncontrollingInterest`	$-55.51M	USD	Annual
Income (Loss) from Continuing Operations Before Equity in Earnings (Losses) of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsNoncontrollingInterest`	$102.39M	USD	Annual
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$2.95M	USD	Annual
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$-21.04M	USD	Annual
Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax	`IncomeLossFromEquityMethodInvestments`	$-72.00K	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$16.10M	USD	1 Quarter
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$10.18M	USD	1 Quarter
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$105.35M	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$83.20M	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-76.55M	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-456.00K	USD	1 Quarter
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$79.52M	USD	1 Quarter
Loss from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-28.63M	USD	1 Quarter
Loss from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$10.93M	USD	1 Quarter
Loss from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	Annual
Loss from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-5.45M	USD	1 Quarter
Loss from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-487.00K	USD	1 Quarter
Loss from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-119.22M	USD	Annual
Loss from Discontinued Operations, Net of Tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-23.64M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$10.66M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$27.20M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$5.56M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$-195.77M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$83.20M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$4.43M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$46.01M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$81.71M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$79.03M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$-29.09M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$21.10M	USD	1 Quarter
Net Income attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$20.12M	USD	Annual
Net Income attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$20.07M	USD	Annual
Net Income attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$25.05M	USD	Annual
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$17.07M	USD	1 Quarter
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$-215.90M	USD	Annual
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$61.64M	USD	Annual
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$17.56M	USD	1 Quarter
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$-32.81M	USD	1 Quarter
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$58.15M	USD	Annual
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$72.81M	USD	1 Quarter
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$-4.69M	USD	1 Quarter
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$4.08M	USD	1 Quarter
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$641.00K	USD	1 Quarter
Net Income (Loss) attributable to SEACOR Holdings Inc.	`NetIncomeLoss`	$45.13M	USD	1 Quarter
Continuing Operations	`IncomeLossFromContinuingOperations`	$9.70M	USD	1 Quarter
Continuing Operations	`IncomeLossFromContinuingOperations`	$82.85M	USD	Annual
Continuing Operations	`IncomeLossFromContinuingOperations`	$-6.78M	USD	1 Quarter
Continuing Operations	`IncomeLossFromContinuingOperations`	$6.63M	USD	1 Quarter
Continuing Operations	`IncomeLossFromContinuingOperations`	$58.15M	USD	Annual
Continuing Operations	`IncomeLossFromContinuingOperations`	$73.29M	USD	1 Quarter
Continuing Operations	`IncomeLossFromContinuingOperations`	$-94.09M	USD	Annual
Discontinued Operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$10.93M	USD	1 Quarter
Discontinued Operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-487.00K	USD	1 Quarter
Discontinued Operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	-	USD	Annual
Discontinued Operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-5.62M	USD	1 Quarter
Discontinued Operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-21.21M	USD	Annual
Discontinued Operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-121.81M	USD	Annual
Discontinued Operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-26.03M	USD	1 Quarter
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$4.77	USD	Annual
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$3.22	USD	Annual
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.57	USD	1 Quarter
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-5.56	USD	Annual
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.38	USD	1 Quarter
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.39	USD	1 Quarter
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$4.15	USD	1 Quarter
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.03	USD	1 Quarter
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-1.52	USD	1 Quarter
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-7.20	USD	Annual
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	-	USD	Annual
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$0.62	USD	1 Quarter
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.33	USD	1 Quarter
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-1.22	USD	Annual
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$2.50	USD	1 Quarter
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$-12.76	USD	Annual
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$3.22	USD	Annual
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$1.00	USD	1 Quarter
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$-0.26	USD	1 Quarter
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$0.24	USD	1 Quarter
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$3.55	USD	Annual
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$4.12	USD	1 Quarter
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$0.04	USD	1 Quarter
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$-1.91	USD	1 Quarter
Basic Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareBasic`	$0.94	USD	1 Quarter
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.38	USD	1 Quarter
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-5.56	USD	Annual
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$3.37	USD	1 Quarter
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.56	USD	1 Quarter
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.39	USD	1 Quarter
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$4.24	USD	Annual
Continuing Operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$3.04	USD	Annual
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	-	USD	Annual
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-0.32	USD	1 Quarter
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-1.52	USD	1 Quarter
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$0.62	USD	1 Quarter
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-7.20	USD	Annual
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-0.02	USD	1 Quarter
Discontinued Operations (in dollars per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-0.93	USD	Annual
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$3.35	USD	1 Quarter
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$1.00	USD	1 Quarter
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$0.24	USD	1 Quarter
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$-1.91	USD	1 Quarter
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$0.88	USD	1 Quarter
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$0.04	USD	1 Quarter
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$3.04	USD	Annual
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$-12.76	USD	Annual
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$3.31	USD	Annual
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$-0.26	USD	1 Quarter
Diluted Earnings (Loss) Per Common Share of SEACOR Holdings Inc. (in dollars per share)	`EarningsPerShareDiluted`	$2.14	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	18.08M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	17.37M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	16.91M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	19.58M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	22.93M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	16.91M	shares	Annual

Cash Flow Statement 171 line items

Line Item	Tag	Value	Unit	Period
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$16.10M	USD	1 Quarter
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$10.18M	USD	1 Quarter
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$105.35M	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$83.20M	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-76.55M	USD	Annual
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-456.00K	USD	1 Quarter
Income (Loss) from Continuing Operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$79.52M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$75.06M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$74.58M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$62.56M	USD	Annual
Amortization of deferred gains on sale leaseback transactions	`AmortizationofDeferredGainsonSaleofPropertySaleLeasebackTransactions`	$15.07M	USD	Annual
Amortization of deferred gains on sale leaseback transactions	`AmortizationofDeferredGainsonSaleofPropertySaleLeasebackTransactions`	$12.77M	USD	Annual
Amortization of deferred gains on sale leaseback transactions	`AmortizationofDeferredGainsonSaleofPropertySaleLeasebackTransactions`	$15.04M	USD	Annual
Debt discount and issuance cost amortization, net	`AmortizationOfFinancingCostsAndDiscounts`	$13.00M	USD	Annual
Debt discount and issuance cost amortization, net	`AmortizationOfFinancingCostsAndDiscounts`	$15.90M	USD	Annual
Debt discount and issuance cost amortization, net	`AmortizationOfFinancingCostsAndDiscounts`	$7.83M	USD	Annual
Amortization of share awards	`ShareBasedCompensation`	$32.42M	USD	Annual
Amortization of share awards	`ShareBasedCompensation`	$3.91M	USD	Annual
Amortization of share awards	`ShareBasedCompensation`	$13.95M	USD	Annual
Director stock awards	`IssuanceOfStockAndWarrantsForServicesOrClaims`	$83.00K	USD	Annual
Director stock awards	`IssuanceOfStockAndWarrantsForServicesOrClaims`	$190.00K	USD	Annual
Director stock awards	`IssuanceOfStockAndWarrantsForServicesOrClaims`	$140.00K	USD	Annual
Bad debt expense (income)	`ProvisionForDoubtfulAccounts`	$-175.00K	USD	Annual
Bad debt expense (income)	`ProvisionForDoubtfulAccounts`	$2.77M	USD	Annual
Bad debt expense (income)	`ProvisionForDoubtfulAccounts`	$2.07M	USD	Annual
(Gains) losses on asset dispositions and impairments, net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-25.98M	USD	Annual
(Gains) losses on asset dispositions and impairments, net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$19.58M	USD	Annual
(Gains) losses on asset dispositions and impairments, net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$11.64M	USD	Annual
Debt extinguishment (gains) losses, net	`GainsLossesOnExtinguishmentOfDebt`	$-819.00K	USD	Annual
Debt extinguishment (gains) losses, net	`GainsLossesOnExtinguishmentOfDebt`	$5.18M	USD	Annual
Debt extinguishment (gains) losses, net	`GainsLossesOnExtinguishmentOfDebt`	$-11.63M	USD	Annual
Marketable security losses, net	`MarketableSecuritiesGainLoss`	$-12.43M	USD	Annual
Marketable security losses, net	`MarketableSecuritiesGainLoss`	$-1.78M	USD	Annual
Marketable security losses, net	`MarketableSecuritiesGainLoss`	$-32.15M	USD	Annual
Purchases of marketable securities	`PaymentsForPurchaseOfSecuritiesOperatingActivities`	-	USD	Annual
Purchases of marketable securities	`PaymentsForPurchaseOfSecuritiesOperatingActivities`	$1.72M	USD	Annual
Purchases of marketable securities	`PaymentsForPurchaseOfSecuritiesOperatingActivities`	-	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleOfSecuritiesOperatingActivities`	-	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleOfSecuritiesOperatingActivities`	$674.00K	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleOfSecuritiesOperatingActivities`	$14.00K	USD	Annual
Derivative (gains) losses, net	`GainLossOnDerivativeInstrumentsNetPretax`	$-14.13M	USD	Annual
Derivative (gains) losses, net	`GainLossOnDerivativeInstrumentsNetPretax`	$19.73M	USD	Annual
Derivative (gains) losses, net	`GainLossOnDerivativeInstrumentsNetPretax`	-	USD	Annual
Cash settlements on derivative transactions, net	`ProceedsfromPaymentsforDerivativeInstrumentOperatingActivities`	-	USD	Annual
Cash settlements on derivative transactions, net	`ProceedsfromPaymentsforDerivativeInstrumentOperatingActivities`	$327.00K	USD	Annual
Cash settlements on derivative transactions, net	`ProceedsfromPaymentsforDerivativeInstrumentOperatingActivities`	$-255.00K	USD	Annual
Foreign currency (gains) losses, net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-2.26M	USD	Annual
Foreign currency (gains) losses, net	`ForeignCurrencyTransactionGainLossBeforeTax`	$323.00K	USD	Annual
Foreign currency (gains) losses, net	`ForeignCurrencyTransactionGainLossBeforeTax`	$1.44M	USD	Annual
Deferred income tax benefit	`DeferredIncomeTaxExpenseBenefit`	$-51.48M	USD	Annual
Deferred income tax benefit	`DeferredIncomeTaxExpenseBenefit`	$-15.51M	USD	Annual
Deferred income tax benefit	`DeferredIncomeTaxExpenseBenefit`	$-48.93M	USD	Annual
Equity in (earnings) losses of 50% or less owned companies, net of tax	`IncomeLossFromEquityMethodInvestments`	$2.95M	USD	Annual
Equity in (earnings) losses of 50% or less owned companies, net of tax	`IncomeLossFromEquityMethodInvestments`	$-21.04M	USD	Annual
Equity in (earnings) losses of 50% or less owned companies, net of tax	`IncomeLossFromEquityMethodInvestments`	$-72.00K	USD	Annual
Dividends received from 50% or less owned companies	`EquityMethodInvestmentDividendsOrDistributions`	$5.16M	USD	Annual
Dividends received from 50% or less owned companies	`EquityMethodInvestmentDividendsOrDistributions`	$5.91M	USD	Annual
Dividends received from 50% or less owned companies	`EquityMethodInvestmentDividendsOrDistributions`	$12.89M	USD	Annual
Other, net	`OtherNoncashIncomeExpense`	$-19.11M	USD	Annual
Other, net	`OtherNoncashIncomeExpense`	-	USD	Annual
Other, net	`OtherNoncashIncomeExpense`	$53.90M	USD	Annual
(Increase) decrease in receivables	`IncreaseDecreaseInReceivables`	$63.76M	USD	Annual
(Increase) decrease in receivables	`IncreaseDecreaseInReceivables`	$-2.19M	USD	Annual
(Increase) decrease in receivables	`IncreaseDecreaseInReceivables`	$26.27M	USD	Annual
Increase in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$8.17M	USD	Annual
Increase in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$8.97M	USD	Annual
Increase in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$1.58M	USD	Annual
Increase (decrease) in accounts payable, accrued expenses and other liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$9.61M	USD	Annual
Increase (decrease) in accounts payable, accrued expenses and other liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-25.72M	USD	Annual
Increase (decrease) in accounts payable, accrued expenses and other liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$12.50M	USD	Annual
Net cash provided by operating activities of continuing operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$39.81M	USD	Annual
Net cash provided by operating activities of continuing operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$107.58M	USD	Annual
Net cash provided by operating activities of continuing operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$49.43M	USD	Annual
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$114.59M	USD	Annual
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$50.27M	USD	Annual
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$252.81M	USD	Annual
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$143.03M	USD	Annual
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$16.10M	USD	Annual
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$164.79M	USD	Annual
Investments in and advances to 50% or less owned companies	`PaymentstoEquityMethodInvestmentCapitalContributionsandPaymentsforAdvancesandLoans`	$8.09M	USD	Annual
Investments in and advances to 50% or less owned companies	`PaymentstoEquityMethodInvestmentCapitalContributionsandPaymentsforAdvancesandLoans`	$20.59M	USD	Annual
Investments in and advances to 50% or less owned companies	`PaymentstoEquityMethodInvestmentCapitalContributionsandPaymentsforAdvancesandLoans`	$9.66M	USD	Annual
Return of investments and advances from 50% or less owned companies	`ProceedsfromEquityMethodInvestmentDistributionsReturnofCapitalandRepaymentsofAdvancesandLoans`	$15.57M	USD	Annual
Return of investments and advances from 50% or less owned companies	`ProceedsfromEquityMethodInvestmentDistributionsReturnofCapitalandRepaymentsofAdvancesandLoans`	$8.99M	USD	Annual
Return of investments and advances from 50% or less owned companies	`ProceedsfromEquityMethodInvestmentDistributionsReturnofCapitalandRepaymentsofAdvancesandLoans`	$9.52M	USD	Annual
Proceeds on sale of 50% or less owned companies	`ProceedsFromSaleOfEquityMethodInvestments`	-	USD	Annual
Proceeds on sale of 50% or less owned companies	`ProceedsFromSaleOfEquityMethodInvestments`	-	USD	Annual
Proceeds on sale of 50% or less owned companies	`ProceedsFromSaleOfEquityMethodInvestments`	$78.02M	USD	Annual
Proceeds on sale of a controlling interest in a subsidiary	`ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries`	$5.00M	USD	Annual
Proceeds on sale of a controlling interest in a subsidiary	`ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries`	-	USD	Annual
Proceeds on sale of a controlling interest in a subsidiary	`ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries`	-	USD	Annual
Net repayments on revolving credit line to 50% or less owned companies	`ProceedsFromPaymentsForLongTermLoansForRelatedParties`	-	USD	Annual
Net repayments on revolving credit line to 50% or less owned companies	`ProceedsFromPaymentsForLongTermLoansForRelatedParties`	$2.40M	USD	Annual
Net repayments on revolving credit line to 50% or less owned companies	`ProceedsFromPaymentsForLongTermLoansForRelatedParties`	-	USD	Annual
(Issuances of) payments received on third party leases and notes receivable, net	`PaymentsForProceedsFromLoansAndLeases`	$-24.48M	USD	Annual
(Issuances of) payments received on third party leases and notes receivable, net	`PaymentsForProceedsFromLoansAndLeases`	$2.71M	USD	Annual
(Issuances of) payments received on third party leases and notes receivable, net	`PaymentsForProceedsFromLoansAndLeases`	$-506.00K	USD	Annual
Deposits into construction reserve funds	`IncreaseinRestrictedCashandCashEquivalentsNoncurrent`	$1.59M	USD	Annual
Deposits into construction reserve funds	`IncreaseinRestrictedCashandCashEquivalentsNoncurrent`	$13.81M	USD	Annual
Deposits into construction reserve funds	`IncreaseinRestrictedCashandCashEquivalentsNoncurrent`	-	USD	Annual
Withdrawals from construction reserve funds	`DecreaseinRestrictedCashandCashEquivalentsNoncurrent`	$47.43M	USD	Annual
Withdrawals from construction reserve funds	`DecreaseinRestrictedCashandCashEquivalentsNoncurrent`	$42.63M	USD	Annual
Withdrawals from construction reserve funds	`DecreaseinRestrictedCashandCashEquivalentsNoncurrent`	$38.22M	USD	Annual
Business acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$20.54M	USD	Annual
Business acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$-5.87M	USD	Annual
Business acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$-310.00K	USD	Annual
Net cash provided by (used in) investing activities of continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-88.16M	USD	Annual
Net cash provided by (used in) investing activities of continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$80.49M	USD	Annual
Net cash provided by (used in) investing activities of continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$115.87M	USD	Annual
Payments on long-term debt	`RepaymentsOfDebtAndCapitalLeaseObligations`	$225.54M	USD	Annual
Payments on long-term debt	`RepaymentsOfDebtAndCapitalLeaseObligations`	$303.49M	USD	Annual
Payments on long-term debt	`RepaymentsOfDebtAndCapitalLeaseObligations`	$168.60M	USD	Annual
Proceeds from issuance of long-term debt, net of offering costs	`ProceedsFromDebtNetOfIssuanceCosts`	$44.90M	USD	Annual
Proceeds from issuance of long-term debt, net of offering costs	`ProceedsFromDebtNetOfIssuanceCosts`	$94.38M	USD	Annual
Proceeds from issuance of long-term debt, net of offering costs	`ProceedsFromDebtNetOfIssuanceCosts`	$-2.50M	USD	Annual
Purchase of conversion option in convertible debt	`PaymentsForConversionOptionInConvertibleDebt`	$1.35M	USD	Annual
Purchase of conversion option in convertible debt	`PaymentsForConversionOptionInConvertibleDebt`	$7.37M	USD	Annual
Purchase of conversion option in convertible debt	`PaymentsForConversionOptionInConvertibleDebt`	$33.00K	USD	Annual
Common stock acquired for treasury	`PaymentsForRepurchaseOfCommonStock`	$2.40M	USD	Annual
Common stock acquired for treasury	`PaymentsForRepurchaseOfCommonStock`	$12.30M	USD	Annual
Common stock acquired for treasury	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Proceeds and tax benefits from share award plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$22.60M	USD	Annual
Proceeds and tax benefits from share award plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$4.91M	USD	Annual
Proceeds and tax benefits from share award plans	`ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions`	$8.41M	USD	Annual
Purchase of subsidiary shares from noncontrolling interests	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	-	USD	Annual
Purchase of subsidiary shares from noncontrolling interests	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	-	USD	Annual
Purchase of subsidiary shares from noncontrolling interests	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	$29.00K	USD	Annual
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	$4.00K	USD	Annual
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	$5.11M	USD	Annual
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	$248.00K	USD	Annual
Net cash used in financing activities of continuing operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-79.33M	USD	Annual
Net cash used in financing activities of continuing operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-249.65M	USD	Annual
Net cash used in financing activities of continuing operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-224.80M	USD	Annual
Effects of Exchange Rate Changes on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-137.00K	USD	Annual
Effects of Exchange Rate Changes on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-2.93M	USD	Annual
Effects of Exchange Rate Changes on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$956.00K	USD	Annual
Net Decrease in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents from Continuing Operations	`NetCashProvidedByUsedInContinuingOperations`	$-95.02M	USD	Annual
Net Decrease in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents from Continuing Operations	`NetCashProvidedByUsedInContinuingOperations`	$-130.61M	USD	Annual
Net Decrease in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents from Continuing Operations	`NetCashProvidedByUsedInContinuingOperations`	$-25.25M	USD	Annual
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$41.21M	USD	Annual
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	-	USD	Annual
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$12.81M	USD	Annual
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$2.72M	USD	Annual
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	-	USD	Annual
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-21.58M	USD	Annual
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	$12.29M	USD	Annual
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	Annual
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	$-7.15M	USD	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations`	$208.00K	USD	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations`	$437.00K	USD	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalentsDiscontinuedOperations`	-	USD	Annual
Net Increase in Cash and Cash Equivalents from Discontinued Operations	`NetCashProvidedByUsedInDiscontinuedOperations`	$8.59M	USD	Annual
Net Increase in Cash and Cash Equivalents from Discontinued Operations	`NetCashProvidedByUsedInDiscontinuedOperations`	-	USD	Annual
Net Increase in Cash and Cash Equivalents from Discontinued Operations	`NetCashProvidedByUsedInDiscontinuedOperations`	$32.35M	USD	Annual
Net Decrease in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-95.02M	USD	Annual
Net Decrease in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-98.26M	USD	Annual
Net Decrease in Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-16.66M	USD	Annual
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$357.15M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$147.21M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$242.23M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$258.89M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$357.15M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$147.21M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$242.23M	USD	Point-in-time
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$258.89M	USD	Point-in-time
Restricted Cash and Restricted Cash Equivalents, End of Year	`RestrictedCashAndCashEquivalents`	$2.25M	USD	Point-in-time
Restricted Cash and Restricted Cash Equivalents, End of Year	`RestrictedCashAndCashEquivalents`	$2.99M	USD	Point-in-time
Restricted Cash and Restricted Cash Equivalents, End of Year	`RestrictedCashAndCashEquivalents`	$2.98M	USD	Point-in-time
Cash and Cash Equivalents, End of Year	`CashAndCashEquivalentsAtCarryingValue`	$144.22M	USD	Point-in-time
Cash and Cash Equivalents, End of Year	`CashAndCashEquivalentsAtCarryingValue`	$256.64M	USD	Point-in-time
Cash and Cash Equivalents, End of Year	`CashAndCashEquivalentsAtCarryingValue`	$239.25M	USD	Point-in-time

Stockholders Equity 58 line items

Line Item	Tag	Value	Unit	Period
Total equity, beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$853.84M	USD	Point-in-time
Total equity, beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.39B	USD	Point-in-time
Total equity, beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$753.36M	USD	Point-in-time
Total equity, beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.20B	USD	Point-in-time
Employee Stock Purchase Plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$1.73M	USD	Annual
Employee Stock Purchase Plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$1.53M	USD	Annual
Employee Stock Purchase Plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$1.44M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$6.88M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$4.37M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$21.15M	USD	Annual
Director stock awards	`StockIssuedDuringPeriodValueIssuedForServices`	$140.00K	USD	Annual
Director stock awards	`StockIssuedDuringPeriodValueIssuedForServices`	$83.00K	USD	Annual
Director stock awards	`StockIssuedDuringPeriodValueIssuedForServices`	$186.00K	USD	Annual
Restricted stock	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	-	USD	Annual
Restricted stock	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	-	USD	Annual
Restricted stock	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	$-1.18M	USD	Annual
Exercise of conversion option in convertible debt	`StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments`	$3.00K	USD	Annual
Distribution of SEACOR Marine stock to shareholders	`StockholdersEquityNoteSpinoffTransaction`	$-527.69M	USD	Annual
Distribution of Dorian shares to shareholders	`DividendsPaidinkind`	-	USD	Annual
Distribution of Dorian shares to shareholders	`DividendsPaidinkind`	-	USD	Annual
Distribution of Dorian shares to shareholders	`DividendsPaidinkind`	$31.38M	USD	Annual
Net issuance of conversion option on exchange of convertible debt, net of tax	`AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt`	$12.73M	USD	Annual
Purchase of conversion option in convertible debt, net of tax	`AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments`	$927.00K	USD	Annual
Purchase of conversion option in convertible debt, net of tax	`AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments`	$4.79M	USD	Annual
Purchase of conversion option in convertible debt, net of tax	`AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments`	$33.00K	USD	Annual
Purchase of treasury shares	`TreasuryStockValueAcquiredCostMethod`	$12.30M	USD	Annual
Purchase of treasury shares	`TreasuryStockValueAcquiredCostMethod`	$2.40M	USD	Annual
Amortization of share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$32.42M	USD	Annual
Amortization of share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$13.95M	USD	Annual
Amortization of share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.91M	USD	Annual
Cancellation of restricted stock	`StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures`	-	USD	Annual
Cancellation of restricted stock	`StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures`	-	USD	Annual
Purchase of subsidiary shares from noncontrolling interests, net of tax	`MinorityInterestDecreaseFromRedemptions`	$3.69M	USD	Annual
Purchase of subsidiary shares from noncontrolling interests, net of tax	`MinorityInterestDecreaseFromRedemptions`	$29.00K	USD	Annual
Acquisition of a subsidiary with noncontrolling interests	`NoncontrollingInterestIncreaseFromBusinessCombination`	$17.37M	USD	Annual
Acquisition of a subsidiary with noncontrolling interests	`NoncontrollingInterestIncreaseFromBusinessCombination`	$96.00K	USD	Annual
Disposition of subsidiary with noncontrolling interests	`NoncontrollingInterestDecreaseFromDeconsolidation`	$14.67M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$3.75M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$5.11M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$7.43M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$10.66M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$27.20M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$5.56M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$-195.77M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$83.20M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$4.43M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$46.01M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$81.71M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$79.03M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$-29.09M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$21.10M	USD	1 Quarter
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-7.01M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.00M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-369.00K	USD	Annual
Total equity, ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$853.84M	USD	Point-in-time
Total equity, ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.39B	USD	Point-in-time
Total equity, ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$753.36M	USD	Point-in-time
Total equity, ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.20B	USD	Point-in-time

Comprehensive Income 41 line items

Line Item	Tag	Value	Unit	Period
Net Income (Loss)	`ProfitLoss`	$10.66M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$27.20M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$5.56M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$-195.77M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$83.20M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$4.43M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$46.01M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$81.71M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$79.03M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$-29.09M	USD	1 Quarter
Net Income (Loss)	`ProfitLoss`	$21.10M	USD	1 Quarter
Foreign currency translation gains (losses), net	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$1.97M	USD	Annual
Foreign currency translation gains (losses), net	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$-10.49M	USD	Annual
Foreign currency translation gains (losses), net	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$-406.00K	USD	Annual
Reclassification of foreign currency translation losses to foreign currency gains (losses), net	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax`	$-74.00K	USD	Annual
Reclassification of foreign currency translation losses to foreign currency gains (losses), net	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax`	-	USD	Annual
Reclassification of foreign currency translation losses to foreign currency gains (losses), net	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax`	$-15.00K	USD	Annual
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	-	USD	Annual
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-389.00K	USD	Annual
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-2.54M	USD	Annual
Other	`OtherComprehensiveIncomeLossOtherAdjustmentsBeforeTax`	$11.00K	USD	Annual
Other	`OtherComprehensiveIncomeLossOtherAdjustmentsBeforeTax`	-	USD	Annual
Other	`OtherComprehensiveIncomeLossOtherAdjustmentsBeforeTax`	$44.00K	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossBeforeTax`	$-391.00K	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossBeforeTax`	$-10.18M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossBeforeTax`	$1.71M	USD	Annual
Income tax (expense) benefit	`OtherComprehensiveIncomeLossTax`	$702.00K	USD	Annual
Income tax (expense) benefit	`OtherComprehensiveIncomeLossTax`	$-22.00K	USD	Annual
Income tax (expense) benefit	`OtherComprehensiveIncomeLossTax`	$-3.17M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-7.01M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.00M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-369.00K	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-202.78M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$82.83M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$82.71M	USD	Annual
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$25.05M	USD	Annual
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$19.01M	USD	Annual
Comprehensive Income attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$20.23M	USD	Annual
Comprehensive Income (Loss) attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$62.49M	USD	Annual
Comprehensive Income (Loss) attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$-221.79M	USD	Annual
Comprehensive Income (Loss) attributable to SEACOR Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$57.78M	USD	Annual

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