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Derivative Instruments - Additional Information (Details)
€ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
USD ($)
swap
Jul. 01, 2017
USD ($)
Jun. 30, 2018
USD ($)
swap
Jul. 01, 2017
USD ($)
Jun. 30, 2018
EUR (€)
swap
Dec. 31, 2017
USD ($)
Dec. 31, 2017
EUR (€)
Change in unrealized gain (loss) on anticipated sales hedging:              
Realized (losses) or gains $ (1,000,000) $ 0 $ (6,000,000) $ 1,000,000      
Foreign currency cash flow hedge derivative | €         € 402   € 389
To be amortized through Accumulated other comprehensive loss     3,000,000        
Losses on the forward interest rate swaps designated in a hedging relationship expected to be reclassified from accumulated other comprehensive loss into earnings during the next 12 months 1,000,000   1,000,000        
Interest expense (less than in second quarter 2018) $ 1,000,000   $ 1,000,000        
Number of interest rate swaps | swap 3   3   3    
Percentage of hedge effectiveness 100.00%   100.00%   100.00%    
Derivative instruments designated as hedges              
Change in unrealized gain (loss) on anticipated sales hedging:              
Maturity period     12 months        
Derivative instruments designated as hedges | Forward interest rate swaps              
Change in unrealized gain (loss) on anticipated sales hedging:              
Derivative forward long-term interest rate swap           $ 800,000,000  
Derivative instruments not designated as hedges              
Change in unrealized gain (loss) on anticipated sales hedging:              
Realized (losses) or gains $ 6,000,000 (11,000,000) $ 19,000,000 (15,000,000)      
Derivative instruments not designated as hedges | Foreign Exchange Forward              
Change in unrealized gain (loss) on anticipated sales hedging:              
Maturity period     1 month        
Derivative instruments not designated as hedges | Forward interest rate swaps | Interest expense              
Change in unrealized gain (loss) on anticipated sales hedging:              
Realized (losses) or gains 5,000,000 $ 0 $ 18,000,000 $ 1,000,000      
Losses on the forward interest rate swaps designated in a hedging relationship expected to be reclassified from accumulated other comprehensive loss into earnings during the next 12 months $ 2,000,000   $ 2,000,000