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Financial Instruments Notional Amounts (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Designated as Hedging Instrument [Member] | Commodity Contract [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | $ 383 | $ 570
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | 1,164 | 0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative, Notional Amount | $ 647 | $ 582

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