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Accumulated Other Comprehensive Loss (Summary of Changes in AOCI) (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | $ (1,989) | $ (2,115) | $ (2,018) | $ (1,915)
Other comprehensive (loss) income before reclassifications, net - Foreign Currency Translation | 122 | (242) |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax | (4) | (11) |  |
Other comprehensive (loss) income before reclassifications, net - Unrealized Hedging Gains (Losses) | (27) | 31 |  |
Other comprehensive (loss) income before reclassifications, net | 91 | (222) |  |
Amounts reclassified, pretax - Foreign Currency Translation | 0 | 2 |  |
Amounts reclassified, pretax - Pension | (142) | 32 |  |
Amounts reclassified, pretax - Unrealized Hedging Gains (Losses) | 39 | 6 |  |
Amounts reclassified, pre-tax | (103) | 40 |  |
Tax benefit (expense) - Foreign Currency Translation | 1 | (3) |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax | 38 | (4) |  |
Tax benefit (expense) - Unrealized Hedging Gains (Losses) | 2 | (11) |  |
Income tax (expense) benefit related to items of other comprehensive income (loss) | 41 | (18) |  |
Foreign Currency Translation |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | (882) | (194) | (1,005) | 49
Defined Benefit Pension and Post-retirement Plans |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | (890) | (1,811) | (782) | (1,828)
Unrealized hedging (losses) gains |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | $ (217) | $ (110) | $ (231) | $ (136)

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