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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Examination [Line Items]      
Provisional reduction in deferred tax liability, recorded as income tax benefit     $ 619,000
Provisional reasonable estimate related to transition tax     33,000
Reduction in deferred tax liability, recorded as income tax benefit   $ 10,000  
Expense for the transition tax   24,000  
Undistributed foreign earnings $ 826,000    
Undistributed earnings of foreign subsidiaries, included in transition tax 635,000    
Net operating loss carryforwards 619,314 414,144  
Valuation allowance 17,577 16,186  
One-time tax benefit related to reversal of uncertain tax positions   4,000  
Unrecognized tax benefits that would affect the effective tax rate in future periods 45,000    
Deferred income tax accrued interest and penalties 4,000 4,000  
Decrease in unrecognized tax benefits related to federal, state and foreign tax positions 8,000    
Income tax expense (benefit) (18,999) 102,547 $ (423,665)
Undervalued Deferred Tax Assets      
Income Tax Examination [Line Items]      
Income tax expense (benefit)   $ (6,000)  
Domestic      
Income Tax Examination [Line Items]      
Net operating loss carryforwards 547,000    
Net operating loss carryforwards, expected to expire 137,000    
Net operating loss carryforwards, indefinite carryforward period 410,000    
State and Local      
Income Tax Examination [Line Items]      
Net operating loss carryforwards 89,000    
Net operating loss carryforwards, indefinite carryforward period 5,000    
Net operating loss carryforwards, expiring in 2019 7,000    
Net operating loss carryforwards, expiring in 2020 4,000    
Net operating loss carryforwards, expiring in 2021 73,000    
Foreign      
Income Tax Examination [Line Items]      
Net operating loss carryforwards $ 19,000