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Derivatives and Hedging Activities - Additional Information (Details)
shares in Thousands, € in Millions, $ in Millions
6 Months Ended
Jun. 30, 2019
USD ($)
shares
Jun. 30, 2019
EUR (€)
shares
Dec. 31, 2018
USD ($)
Financial Instruments [Line Items]      
Long-term debt $ 5,508   $ 5,340
Net derivative losses to be reclassified within twelve months 1    
Foreign Exchange Forward      
Financial Instruments [Line Items]      
Derivative asset $ 1   1
Equity swap agreement      
Financial Instruments [Line Items]      
Notional amount | shares 250 250  
Net asset position fair value $ 3   4
Commodity contracts      
Financial Instruments [Line Items]      
Period of forecasted purchases 18 months    
Notional amount $ 25   $ 27
Term of derivative 1 year    
Net Investment Hedging      
Financial Instruments [Line Items]      
Long-term debt | €   € 774