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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Fair Values of U.S. Pension and Postretirement Benefit Plan Assets by Asset Category as Well as the Percentage That Each Category Comprises of Total Plan Assets and the Respective Target Allocations (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 43,396 | $ 45,482 |
Cash held as collateral | 2,700 |  |
Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 22,250 | 22,479 |
Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 10,941 | 13,022 |
Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 62 | 80 | $ 77
United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 41,618 | $ 43,589 |
Percentage of Plan Assets | 100.00% | 100.00% |
United States | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 5,716 | $ 1,018 |
Percentage of Plan Assets | 13.70% | 2.30% |
United States | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 6,979 | $ 10,164 |
Percentage of Plan Assets | 16.80% | 23.30% |
United States | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 19,643 | $ 25,673 |
Percentage of Plan Assets | 47.20% | 58.90% |
United States | Other Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 11,216 | $ 12,722 |
United States | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 2,034 | $ 3,959 |
Percentage of Plan Assets | 4.90% | 9.10% |
United States | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 2,674 | $ 2,575 |
Percentage of Plan Assets | 6.40% | 5.90% |
United States | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 6,508 | $ 6,188 |
Percentage of Plan Assets | 15.60% | 14.20% |
United States | Derivatives and Other Instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ (1,936) | $ (5,988) |
United States | Equity risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ (392) | $ (136) |
Percentage of Plan Assets | (0.90%) | (0.30%) |
United States | Interest rate risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ (1,619) | $ (5,877) |
Percentage of Plan Assets | (3.90%) | (13.50%) |
United States | Other Risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 75 | $ 25 |
Percentage of Plan Assets | 0.20% | 0.10% |
United States | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 21,857 | $ 22,070 |
United States | Level 1 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 5,450 | 894 |
United States | Level 1 | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3,270 | 3,448 |
United States | Level 1 | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 13,375 | 17,299 |
United States | Level 1 | Other Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 301 | 421 |
United States | Level 1 | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 28 |
United States | Level 1 | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 301 | 393 |
United States | Level 1 | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 1 | Derivatives and Other Instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | (539) | 8 |
United States | Level 1 | Equity risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | (99) | 29 |
United States | Level 1 | Interest rate risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | (442) | (20) |
United States | Level 1 | Other Risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | (1) |
United States | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 9,634 | 11,658 |
United States | Level 2 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 266 | 124 |
United States | Level 2 | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3,709 | 6,716 |
United States | Level 2 | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 6,247 | 8,374 |
United States | Level 2 | Other Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 810 | 2,440 |
United States | Level 2 | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 538 | 2,194 |
United States | Level 2 | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 77 | 77 |
United States | Level 2 | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 195 | 169 |
United States | Level 2 | Derivatives and Other Instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | (1,398) | (5,996) |
United States | Level 2 | Equity risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | (294) | (165) |
United States | Level 2 | Interest rate risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | (1,177) | (5,857) |
United States | Level 2 | Other Risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 73 | 26 |
United States | Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 21 | 0 |
United States | Level 3 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 3 | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 3 | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 21 | 0 |
United States | Level 3 | Other Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 3 | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 3 | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 3 | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 3 | Derivatives and Other Instruments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 3 | Equity risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 3 | Interest rate risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Level 3 | Other Risk |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
United States | Minimum | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 1.00% | 1.00% |
United States | Minimum | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 15.00% | 15.00% |
United States | Minimum | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 30.00% | 30.00% |
United States | Minimum | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 3.00% | 3.00% |
United States | Minimum | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 3.00% | 3.00% |
United States | Minimum | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 5.00% | 5.00% |
United States | Maximum | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 7.00% | 7.00% |
United States | Maximum | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 45.00% | 45.00% |
United States | Maximum | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 73.00% | 70.00% |
United States | Maximum | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 13.00% | 13.00% |
United States | Maximum | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 15.00% | 15.00% |
United States | Maximum | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 29.00% | 35.00% |
International Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,778 | $ 1,893 |
International Pension Benefits | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 127 | $ 71 |
Percentage of Plan Assets | 7.10% | 3.80% |
International Pension Benefits | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 165 | $ 109 |
Percentage of Plan Assets | 9.30% | 5.80% |
International Pension Benefits | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,202 | $ 1,392 |
Percentage of Plan Assets | 67.60% | 73.50% |
International Pension Benefits | Other Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 1,893 |
International Pension Benefits | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 62 | $ 66 |
Percentage of Plan Assets | 3.50% | 3.50% |
International Pension Benefits | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 222 | $ 255 |
Percentage of Plan Assets | 12.50% | 13.40% |
International Pension Benefits | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,778 |  |
Percentage of Plan Assets | 100.00% | 100.00% |
International Pension Benefits | Level 1 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 127 | $ 77 |
International Pension Benefits | Level 1 | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 23 | 20 |
International Pension Benefits | Level 1 | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 243 | 312 |
International Pension Benefits | Level 1 | Other Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 409 |
International Pension Benefits | Level 1 | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Level 1 | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Level 1 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 393 |  |
International Pension Benefits | Level 2 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | (6) |
International Pension Benefits | Level 2 | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 142 | 89 |
International Pension Benefits | Level 2 | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 959 | 1,080 |
International Pension Benefits | Level 2 | Other Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 1,364 |
International Pension Benefits | Level 2 | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 17 | 18 |
International Pension Benefits | Level 2 | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 189 | 183 |
International Pension Benefits | Level 2 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,307 |  |
International Pension Benefits | Level 3 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Level 3 | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Level 3 | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Level 3 | Other Investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 80 |
International Pension Benefits | Level 3 | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 23 | 25 |
International Pension Benefits | Level 3 | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 18 | $ 55 |
International Pension Benefits | Level 3 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 41 |  |
International Pension Benefits | Minimum | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 1.00% | 1.00% |
International Pension Benefits | Minimum | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 1.00% | 1.00% |
International Pension Benefits | Minimum | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 50.00% | 50.00% |
International Pension Benefits | Minimum | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 1.00% | 1.00% |
International Pension Benefits | Minimum | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 10.00% | 10.00% |
International Pension Benefits | Maximum | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 10.00% | 10.00% |
International Pension Benefits | Maximum | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 10.00% | 10.00% |
International Pension Benefits | Maximum | Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 75.00% | 75.00% |
International Pension Benefits | Maximum | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 10.00% | 10.00% |
International Pension Benefits | Maximum | Private equity, private debt, and other investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage Target Allocation | 35.00% | 35.00% |

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