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Hedging Transactions and Derivative Financial Instruments (Summary of Notional Values and Pretax Impact in Fair Values) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Reclassified from OCI | $ (193) | $ (222) | $ 407
Net investment hedging | Foreign currency contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, original notional amount | 3,875 | 3,875 |
Derivative, notional amount outstanding | 3,000 | 3,000 |
Gain (loss) recognized in OCI on derivatives and nonderivatives | 225 | 130 |
Amounts Reclassified from OCI | 0 | 0 |
Net investment hedging | Foreign currency denominated debt |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Nonderivative hedging instruments | 5,777 | 3,883 |
Net investment hedges, gain (loss), recognized in OCI | 248 | 333 |
Amounts Reclassified from OCI | 0 | 0 |
Cash flow hedging | Foreign currency contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, original notional amount | 4,000 | 4,000 |
Derivative, notional amount outstanding | 3,300 | 4,000 |
Gain (loss) recognized in OCI on derivatives and nonderivatives | 378 | 542 |
Amounts Reclassified from OCI | (238) | (283) |
Cash flow hedging | Interest rate swaps |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, original notional amount | 1,600 | 1,600 |
Derivative, notional amount outstanding | 0 | 0 |
Gain (loss) recognized in OCI on derivatives and nonderivatives | 0 | (19) |
Amounts Reclassified from OCI | 3 | 3 |
Cash Flow and Net Investment Hedges |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Original Notional Amount | 15,252 | 13,358 |
Notional Amount Outstanding | 12,077 | 10,883 |
Gain (loss) recognized in OCI on derivatives and nonderivatives | 851 | 986 |
Amounts Reclassified from OCI | $ (235) | $ (280) |

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