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Accumulated Other Comprehensive Loss - Reclassifications (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Other income (expense), net | $ (334) | $ 113 | $ (32)
Net loss (gain) on sale of businesses | 17 | 121 | (113)
Total before tax | 230 | 10,237 | 991
Income tax (benefit) expense | (175) | 61 | 557
Net of tax | 55 | 10,298 | $ 1,548
Decrease (Increase) in Net Income/Loss | Defined benefit plans |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Total before tax | 76 | 67 |
Income tax (benefit) expense | (19) | (16) |
Net of tax | 57 | 51 |
Decrease (Increase) in Net Income/Loss | Net actuarial loss |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Other income (expense), net | 91 | 82 |
Assets held for sale |  | (24) |
Net loss (gain) on sale of businesses |  | (2) |
Net loss (gain) on sale of businesses, including held for sale |  | (22) |
Decrease (Increase) in Net Income/Loss | Prior service cost |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Other income (expense), net | $ (15) | (15) |
Decrease (Increase) in Net Income/Loss | Foreign currency adjustment |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Assets held for sale |  | 389 |
Net loss (gain) on sale of businesses |  | (7) |
Net loss (gain) on sale of businesses, including held for sale |  | 382 |
Decrease (Increase) in Net Income/Loss | Defined benefit plans and foreign currency adjustment |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Income tax (benefit) expense |  | 0 |
Net of tax |  | $ 360 |

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