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Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Schedule Of Income Tax [Line Items]      
U.S. federal corporate tax rate 21.00%    
Tax cuts and jobs act of 2017, Adjustments of provisional income tax expense   $ 69,000,000  
Tax cuts and jobs act, Accounting complete, Date Dec. 31, 2018    
Tax cuts and jobs act, Accounting complete true    
Charge relating to change in U.S. federal corporate tax rate   69,000,000  
Change in valuation allowance   (69,000,000)  
Charge relating to transition tax   33,000,000  
Deferred tax amounts related to GILTI   0  
Income tax related to GILTI $ 0    
Cumulative Loss Position Period 3 years    
Unrecognized tax benefits, income tax penalties and interest expense $ 0    
Unrecognized tax benefits, income tax penalties and interest accrued 0    
Valuation Allowance 129,000,000 157,000,000 $ 202,000,000
Valuation allowance 8,000,000    
Foreign tax credit carryforwards 8,000,000 $ 29,000,000 $ 5,000,000
Undistributed earnings 130,000,000    
Additional income taxes provided for other foreign earnings or any additional outside basis differences inherent in foreign subsidiaries 0    
Federal [Member]      
Schedule Of Income Tax [Line Items]      
Operating loss carryforwards 220,000,000    
Deferred tax benefit 46,000,000    
Valuation Allowance 46,000,000    
State [Member]      
Schedule Of Income Tax [Line Items]      
Operating loss carryforwards 125,000,000    
Deferred tax benefit 7,000,000    
Valuation allowance 7,000,000    
Foreign Country [Member]      
Schedule Of Income Tax [Line Items]      
Operating loss carryforwards 16,000,000    
Valuation allowance 3,000,000    
Operating Loss Carryforwards without expiration date 12,000,000    
Operating Loss Carryforwards with expiration date 4,000,000    
United States [Member]      
Schedule Of Income Tax [Line Items]      
Change in valuation allowance 27,000,000    
Canada [Member]      
Schedule Of Income Tax [Line Items]      
Change in valuation allowance 1,000,000    
Internal Revenue Service [Member]      
Schedule Of Income Tax [Line Items]      
Change in valuation allowance (3,000,000)    
Transition tax liability 31,000,000    
Deferred tax assets write-down related to performance based compensation 3,000,000    
Maximum [Member]      
Schedule Of Income Tax [Line Items]      
Tax cuts and jobs act of 2017, Adjustments of provisional income tax expense $ 1,000,000    
Foreign tax credits expiration year 2027    
Maximum [Member] | Federal [Member]      
Schedule Of Income Tax [Line Items]      
Operating loss carryforwards expiration year 2037    
Maximum [Member] | State [Member]      
Schedule Of Income Tax [Line Items]      
Operating loss carryforwards expiration year 2037    
Maximum [Member] | Foreign Country [Member]      
Schedule Of Income Tax [Line Items]      
Operating loss carryforwards expiration year 2020    
Maximum [Member] | Other Foreign Jurisdictions [Member]      
Schedule Of Income Tax [Line Items]      
Change in valuation allowance $ 1,000,000    
Maximum [Member] | Internal Revenue Service [Member]      
Schedule Of Income Tax [Line Items]      
Tax expense due to net transition tax adjustments $ 1,000,000    
Minimum [Member]      
Schedule Of Income Tax [Line Items]      
Foreign tax credits expiration year 2024    
Minimum [Member] | Federal [Member]      
Schedule Of Income Tax [Line Items]      
Operating loss carryforwards expiration year 2035    
Minimum [Member] | State [Member]      
Schedule Of Income Tax [Line Items]      
Operating loss carryforwards expiration year 2020    
Minimum [Member] | Foreign Country [Member]      
Schedule Of Income Tax [Line Items]      
Operating loss carryforwards expiration year 2037