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v3.19.1

Fair Value (Quantitative Information) (Details) $ in Millions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | $ 14 | $ 63 | $ 99 | $ 93
Interest Rate Contract [Member] |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | (182) | (140) | (129) | (151)
Foreign Exchange Contract [Member] |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | 194 | 199 | 225 | 240
Commodity Contract [Member] |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | 2 | $ 4 | $ 3 | $ 4
Argentina, Pesos | Foreign Exchange Contract [Member] |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | $ 194 |  |  |
Argentina, Pesos | Foreign Exchange Contract [Member] | Minimum [Member] |  |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |
Derivative, Forward Exchange Rate | 0.5700 |  |  |
Argentina, Pesos | Foreign Exchange Contract [Member] | Maximum [Member] |  |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |
Derivative, Forward Exchange Rate | 1.0500 |  |  |
Argentina, Pesos | Foreign Exchange Contract [Member] | Weighted Average [Member] |  |  |  |
Fair Value Derivative Assets Liabilities Measured On Recurring Basis Unobservable Inputs [Abstract] |  |  |  |
Derivative, Forward Exchange Rate | 0.8500 |  |  |
Measurement Input, Entity Credit Risk [Member] | Interest Rate Contract [Member] | Minimum [Member] |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 2.00% |  |  |
Measurement Input, Entity Credit Risk [Member] | Interest Rate Contract [Member] | Maximum [Member] |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 4.43% |  |  |
Measurement Input, Entity Credit Risk [Member] | Interest Rate Contract [Member] | Weighted Average [Member] |  |  |  |
Fair Value Inputs Quantitative Information [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 4.00% |  |  |

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