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Long-Term and Other Debt - Additional Information (Details) - USD ($)
3 Months Ended
Apr. 04, 2019
Mar. 19, 2019
Mar. 31, 2019
Mar. 31, 2018
Debt Instrument        
Loss on debt financing transactions     $ 0 $ (93,000,000)
2026 Unsecured Notes | Senior Notes        
Debt Instrument        
Principal debt amount   $ 1,100,000,000.0    
Debt issuance price, percent of principal   100.00%    
Outstanding debt redeemed   $ 1,000,000,000    
Redemption price, percent of principal   100.00%    
Financing costs   $ 16,000,000    
Subsequent Event        
Debt Instrument        
Loss on debt financing transactions $ (60,000,000)