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Long-Term Debt - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Debt Disclosure [Abstract]    
Long-term debt, fair value $ 2,200 $ 2,200
Debt Instrument [Line Items]    
Assets 4,249 4,275
Liabilities $ 3,268 $ 3,441
Sales Revenue, Net | Non-Guarantor Subsidiaries    
Debt Instrument [Line Items]    
Concentration risk, percentage 48.30%  
Assets, Total | Non-Guarantor Subsidiaries    
Debt Instrument [Line Items]    
Concentration risk, percentage 84.50%  
Assets $ 3,600  
Liabilities, Total | Non-Guarantor Subsidiaries    
Debt Instrument [Line Items]    
Concentration risk, percentage 81.70%  
Liabilities $ 2,700  
Term Loan | Term Loan A    
Debt Instrument [Line Items]    
Percentage bearing variable interest, percentage rate 3.51%  
Term Loan | Term Loan B    
Debt Instrument [Line Items]    
Percentage bearing variable interest, percentage rate 3.75%