Risk Management (Summary of Fair Values and Location in Condensed Consolidated Balance Sheet) (Details) - Not Designated As Hedging Instruments - USD ($) $ in Millions |
Dec. 31, 2016 |
Dec. 31, 2015 |
---|---|---|
Derivatives, Fair Value [Line Items] | ||
Fair value of derivative assets | $ 9 | $ 6 |
Fair value of derivative liabilities | 32 | 3 |
Foreign exchange contracts | Other assets | ||
Derivatives, Fair Value [Line Items] | ||
Fair value of derivative assets | 9 | 6 |
Foreign exchange contracts | Accrued liabilities | ||
Derivatives, Fair Value [Line Items] | ||
Fair value of derivative liabilities | $ 32 | 2 |
Interest rate swap | Other assets | ||
Derivatives, Fair Value [Line Items] | ||
Fair value of derivative assets | 0 | |
Interest rate swap | Accrued liabilities | ||
Derivatives, Fair Value [Line Items] | ||
Fair value of derivative liabilities | $ 1 |