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PENSION AND OTHER POSTRETIREMENT BENEFIT PROGRAMS - Fair Value of Pension Plan Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | $ 2,228 | $ 2,350 |
Quoted prices in active markets for identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 561 | 548 |
Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 750 | 831 |
Significant unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 127 | 155 |
Fair Value, Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 738 | 756 |
Cash |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 52 | 60 |
Cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 179 | 399 |
Cash equivalents | Quoted prices in active markets for identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Cash equivalents | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 179 | 399 |
Cash equivalents | Significant unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Cash equivalents | Fair Value, Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
U.S. government and government agency issues |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 135 | 95 |
U.S. government and government agency issues | Quoted prices in active markets for identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
U.S. government and government agency issues | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 135 | 95 |
U.S. government and government agency issues | Significant unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
U.S. government and government agency issues | Fair Value, Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 357 | 265 |
Corporate bonds | Quoted prices in active markets for identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Corporate bonds | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 357 | 265 |
Corporate bonds | Significant unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Corporate bonds | Fair Value, Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Common stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 353 | 344 |
Common stock | Quoted prices in active markets for identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 353 | 344 |
Common stock | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Common stock | Significant unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Common stock | Fair Value, Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Mutual funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 199 | 192 |
Mutual funds | Quoted prices in active markets for identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 199 | 192 |
Mutual funds | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Mutual funds | Significant unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Mutual funds | Fair Value, Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Common/collective trust funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 540 | 540 |
Common/collective trust funds | Quoted prices in active markets for identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Common/collective trust funds | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Common/collective trust funds | Significant unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Common/collective trust funds | Fair Value, Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 540 | 540 |
Partnership investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 198 | 216 |
Partnership investments | Quoted prices in active markets for identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Partnership investments | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Partnership investments | Significant unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 0 | 0 |
Partnership investments | Fair Value, Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 198 | 216 |
Other holdings |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 215 | 239 |
Other holdings | Quoted prices in active markets for identical assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 9 | 12 |
Other holdings | Significant other observable inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 79 | 72 |
Other holdings | Significant unobservable inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | 127 | 155 | $ 7
Other holdings | Fair Value, Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of pension plan assets | $ 0 | $ 0 |

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