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Derivative Instruments - Derivatives and Hedges (Details) - Cash Flow Hedges - USD ($) $ in Millions | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020
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Foreign exchange risk |  |  |
Derivatives and Hedges |  |  |
Unrecognized (loss) gain included in Accumulated OCI | $ 10 | $ 9 | $ (4)
Interest rate risk |  |  |
Derivatives and Hedges |  |  |
Unrecognized (loss) gain included in Accumulated OCI |  |  | $ (1)
Interest rate risk | Maximum |  |  |
Derivatives and Hedges |  |  |
Unrecognized (loss) gain included in Accumulated OCI | $ (1) | $ (1) |

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- Definition Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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