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Derivative and Other Financial Instruments - Fair Values of Derivative Instruments and Valuation Hierarchy (Details) - USD ($) $ in Millions | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Derivative assets |  |
Total | $ 28 | $ 63
Derivative liabilities |  |
Total | 78 | 23
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Other current assets | Foreign exchange | Designated as Hedging Instrument |  |
Derivative assets |  |
Derivatives designated as hedges, Foreign exchange | 7 | 5
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Other current assets | Foreign exchange | Derivatives not designated as hedges |  |
Derivative assets |  |
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value | 1 | 1
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Other current assets | Commodities | Designated as Hedging Instrument |  |
Derivative assets |  |
Derivatives designated as hedges, Commodities | 17 | 25
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Other current assets | Commodities | Derivatives not designated as hedges |  |
Derivative assets |  |
Derivatives designated as hedges, Commodities | 0 | 22
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Accrued liabilities | Foreign exchange | Designated as Hedging Instrument |  |
Derivative liabilities |  |
Derivatives designated as hedges, Foreign exchange | 11 | 6
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Accrued liabilities | Foreign exchange | Derivatives not designated as hedges |  |
Derivative liabilities |  |
Derivatives not designated as hedges, Foreign exchange | 1 | 1
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Accrued liabilities | Commodities | Designated as Hedging Instrument |  |
Derivative liabilities |  |
Derivatives designated as hedges, Commodities | 21 | 0
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Accrued liabilities | Commodities | Derivatives not designated as hedges |  |
Derivative liabilities |  |
Derivatives designated as hedges, Commodities | 0 | 15
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Other non-current assets | Commodities | Designated as Hedging Instrument |  |
Derivative assets |  |
Derivatives designated as hedges, Commodities | 1 | 4
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Other non-current liabilities | Foreign exchange | Designated as Hedging Instrument |  |
Derivative liabilities |  |
Derivatives designated as hedges, Foreign exchange | 1 | 0
Derivatives in cash flow hedges | Fair Value, Inputs, Level 2 | Other non-current liabilities | Commodities | Designated as Hedging Instrument |  |
Derivative liabilities |  |
Derivatives designated as hedges, Commodities | 4 | 0
Derivatives in fair value hedges | Accrued liabilities | Designated as Hedging Instrument |  |
Derivative liabilities |  |
Derivatives designated as hedges, Foreign exchange | 22 | 12
Derivatives in fair value hedges | Fair Value, Inputs, Level 2 | Other current assets | Foreign exchange | Designated as Hedging Instrument |  |
Derivative assets |  |
Derivatives designated as hedges, Foreign exchange | 1 | 1
Derivatives in fair value hedges | Fair Value, Inputs, Level 2 | Other current assets | Foreign exchange | Derivatives not designated as hedges |  |
Derivative assets |  |
Derivatives designated as hedges, Foreign exchange | 1 | 5
Derivatives in fair value hedges | Fair Value, Inputs, Level 2 | Accrued liabilities | Foreign exchange | Designated as Hedging Instrument |  |
Derivative liabilities |  |
Derivatives designated as hedges, Foreign exchange | 1 | 1
Derivatives in fair value hedges | Fair Value, Inputs, Level 2 | Accrued liabilities | Foreign exchange | Derivatives not designated as hedges |  |
Derivative liabilities |  |
Derivatives not designated as hedges, Foreign exchange | 2 | 0
Derivatives designated as net investment hedges | Fair Value, Inputs, Level 2 | Other non-current liabilities | Foreign exchange | Designated as Hedging Instrument |  |
Derivative liabilities |  |
Derivatives designated as hedges, Commodities | $ 37 | $ 0

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