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Derivatives Instruments (Notional Volumes of Foreign Exchange Swaps and Forward Contracts Related to Commodity Contracts) (Details) - Foreign Exchange Swaps and Forward Contracts $ in Millions | Dec. 31, 2019 USD ($)
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2020 |
Derivative [Line Items] |
Notional volumes of outstanding derivatives designated as cash flow hedges that are expected to settle | $ 173
Weighted average rate | 0.013148
% of USD requirements | 85.00%
2021-2022 |
Derivative [Line Items] |
Notional volumes of outstanding derivatives designated as cash flow hedges that are expected to settle | $ 148
Weighted average rate | 0.013264
% of USD requirements | 39.00%

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- Definition The percentage of expected requirements covered by the aggregate notional amount of derivative contracts expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract as a percentage of expected need. + References No definition available. + Details
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