PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Basis of Fair Value Measurements of Pension Plan Assets) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | $ 18,200 | $ 19,600 | |
Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 18,169 | 19,634 | $ 21,231 |
Subtotal | 12,468 | 13,796 | |
Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Subtotal | 4,368 | 4,658 | |
Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Subtotal | 8,093 | 9,131 | |
Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 7 | 7 | 12 |
Subtotal | 7 | 7 | |
Cash and Cash Equivalents | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 1,319 | 1,050 | |
Cash and Cash Equivalents | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 1,087 | 987 | |
Cash and Cash Equivalents | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 232 | 63 | |
Cash and Cash Equivalents | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.S. Equity [Member] | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 1,474 | 1,443 | |
U.S. Equity [Member] | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 1,466 | 1,431 | |
U.S. Equity [Member] | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 7 | 11 | |
U.S. Equity [Member] | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 1 | 1 | |
Non-U.S. Equity [Member] | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 1,620 | 1,720 | |
Non-U.S. Equity [Member] | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 1,488 | 1,584 | |
Non-U.S. Equity [Member] | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 127 | 132 | |
Non-U.S. Equity [Member] | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 5 | 4 | |
Equity securities | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 3,094 | 3,163 | |
Equity securities | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 2,954 | 3,015 | |
Equity securities | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 134 | 143 | |
Equity securities | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 6 | 5 | 6 |
Government debt | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 3,805 | 4,665 | |
Government debt | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 47 | |
Government debt | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 3,805 | 4,618 | |
Government debt | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 0 | |
Corporate bonds | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 3,189 | 4,277 | |
Corporate bonds | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 308 | 584 | |
Corporate bonds | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 2,881 | 3,692 | |
Corporate bonds | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 1 | |
Debt - asset-backed | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 42 | 43 | |
Debt - asset-backed | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 0 | |
Debt - asset-backed | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 42 | 43 | |
Debt - asset-backed | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 0 | |
Fixed Income Securities [Member] | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 7,036 | 8,985 | |
Fixed Income Securities [Member] | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 308 | 631 | |
Fixed Income Securities [Member] | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 6,728 | 8,353 | |
Fixed Income Securities [Member] | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 0 | 1 | 1 |
Private Equity Funds | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 1 | 1 | |
Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets | 3,556 | 3,350 | |
Private Equity Funds | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 0 | |
Private Equity Funds | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 0 | |
Private Equity Funds | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 1 | 1 | |
Real Estate | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 19 | 21 | |
Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets | 1,423 | 1,741 | |
Real Estate | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 19 | 21 | |
Real Estate | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 0 | |
Real Estate | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 0 | |
Derivatives - asset position | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 242 | 190 | |
Derivatives - asset position | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 5 | 1 | |
Derivatives - asset position | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 237 | 189 | |
Derivatives - asset position | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 0 | |
Derivatives - liability position | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 423 | 223 | |
Derivatives - liability position | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 5 | 0 | |
Derivatives - liability position | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 418 | 223 | |
Derivatives - liability position | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0 | 0 | |
Alternative Investments | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | (161) | (11) | |
Alternative Investments | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 19 | 22 | |
Alternative Investments | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | (181) | (34) | |
Alternative Investments | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 1 | 1 | $ 5 |
Other Investments | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 1,180 | 609 | |
Other Investments | Pension Plan [Member] | Quoted Prices in Active Markets for Identical Items (Level 1) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 0 | 3 | |
Other Investments | Pension Plan [Member] | Significant Other Observable Inputs (Level 2) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 1,180 | 606 | |
Other Investments | Pension Plan [Member] | Significant Unobservable Inputs (Level 3) | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
Hedge Funds | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Alternative Investments, Fair Value Of Plan Assets | 839 | 820 | |
Plan Assets, Retirement Plan, Total investments measured at NAV [Member] | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 5,818 | 5,911 | |
Pension Trust Receivables [Member] | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | 81 | 42 | |
Pension Trust Payables [Member] | Pension Plan [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Fair value of plan assets | $ (198) | $ (115) | |