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Income Taxes - Components of Income Tax Expense Benefit (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income from continuing operations before income taxes and equity in net income of unconsolidated investments:      
Domestic $ 45,689us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 351,731us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 311,195us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Foreign 167,490us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 186,711us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 57,017us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Income from continuing operations before income taxes and equity in net income of unconsolidated investments 213,179us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 538,442us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 368,212us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Current income tax expense:      
Federal 36,708us-gaap_CurrentFederalTaxExpenseBenefit 53,953us-gaap_CurrentFederalTaxExpenseBenefit 67,022us-gaap_CurrentFederalTaxExpenseBenefit
State 3,209us-gaap_CurrentStateAndLocalTaxExpenseBenefit 2,195us-gaap_CurrentStateAndLocalTaxExpenseBenefit 6,107us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Foreign 25,700us-gaap_CurrentForeignTaxExpenseBenefit 18,414us-gaap_CurrentForeignTaxExpenseBenefit 19,672us-gaap_CurrentForeignTaxExpenseBenefit
Total 65,617us-gaap_CurrentIncomeTaxExpenseBenefit 74,562us-gaap_CurrentIncomeTaxExpenseBenefit 92,801us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred income tax expense (benefit):      
Federal (32,890)us-gaap_DeferredFederalIncomeTaxExpenseBenefit 69,817us-gaap_DeferredFederalIncomeTaxExpenseBenefit 928us-gaap_DeferredFederalIncomeTaxExpenseBenefit
State (1,139)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit 2,416us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit 648us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Foreign (13,104)us-gaap_DeferredForeignIncomeTaxExpenseBenefit (12,350)us-gaap_DeferredForeignIncomeTaxExpenseBenefit (13,944)us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Total (47,133)us-gaap_DeferredIncomeTaxExpenseBenefit 59,883us-gaap_DeferredIncomeTaxExpenseBenefit (12,368)us-gaap_DeferredIncomeTaxExpenseBenefit
Total income tax expense $ 18,484us-gaap_IncomeTaxExpenseBenefit $ 134,445us-gaap_IncomeTaxExpenseBenefit $ 80,433us-gaap_IncomeTaxExpenseBenefit