PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Schedule of Fair Value of Plan Assets by Category (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 |
Significant unobservable inputs (Level 3) | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | $ 16 | $ 20 |
Fair Value, Measurements, Recurring | Pension Benefits | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 2,009 | 2,102 |
Fair Value, Measurements, Recurring | Pension Benefits | Cash and cash equivalents | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 178 | 159 |
Fair Value, Measurements, Recurring | Pension Benefits | Government and government agency securities, U.S. securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 75 | 82 |
Fair Value, Measurements, Recurring | Pension Benefits | Government and government agency securities, International securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 39 | 42 |
Fair Value, Measurements, Recurring | Pension Benefits | Corporate bonds and notes, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 1,094 | 1,194 |
Fair Value, Measurements, Recurring | Pension Benefits | Corporate bonds and notes, international companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 154 | 187 |
Fair Value, Measurements, Recurring | Pension Benefits | Equity securities, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Equity securities, International companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 8 | 11 |
Fair Value, Measurements, Recurring | Pension Benefits | Mutual funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 71 | 73 |
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, U.S. equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 227 | 166 |
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 119 | 123 |
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, Short-term investment fund | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, International debt securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, Real estate | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Limited partnerships, U.S. private equity investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 15 | 17 |
Fair Value, Measurements, Recurring | Pension Benefits | Limited partnerships, Diversified fund of funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 1 |
Fair Value, Measurements, Recurring | Pension Benefits | Limited partnerships, Emerging growth | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 2 | 2 |
Fair Value, Measurements, Recurring | Pension Benefits | All other investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 27 | 45 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 8 | 11 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Cash and cash equivalents | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Government and government agency securities, U.S. securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Government and government agency securities, International securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Corporate bonds and notes, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Corporate bonds and notes, international companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Equity securities, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Equity securities, International companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 8 | 11 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Mutual funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, U.S. equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, Short-term investment fund | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, International debt securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, Real estate | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Limited partnerships, U.S. private equity investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Limited partnerships, Diversified fund of funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Limited partnerships, Emerging growth | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | All other investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 1,638 | 1,782 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Cash and cash equivalents | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 178 | 159 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Government and government agency securities, U.S. securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 75 | 82 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Government and government agency securities, International securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 39 | 42 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Corporate bonds and notes, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 1,094 | 1,194 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Corporate bonds and notes, international companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 154 | 187 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Equity securities, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Equity securities, International companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Mutual funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 71 | 73 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, U.S. equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, Short-term investment fund | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, International debt securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, Real estate | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Limited partnerships, U.S. private equity investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Limited partnerships, Diversified fund of funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Limited partnerships, Emerging growth | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | All other investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 27 | 45 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 17 | 20 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Cash and cash equivalents | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Government and government agency securities, U.S. securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Government and government agency securities, International securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Corporate bonds and notes, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Corporate bonds and notes, international companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Equity securities, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Equity securities, International companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Mutual funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, U.S. equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, Short-term investment fund | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, International debt securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, Real estate | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Limited partnerships, U.S. private equity investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 15 | 17 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Limited partnerships, Diversified fund of funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 1 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Limited partnerships, Emerging growth | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 2 | 2 |
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | All other investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 346 | 289 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Cash and cash equivalents | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Government and government agency securities, U.S. securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Government and government agency securities, International securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Corporate bonds and notes, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Corporate bonds and notes, international companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Equity securities, U.S. companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Equity securities, International companies | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Mutual funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, U.S. equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 227 | 166 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 119 | 123 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, Short-term investment fund | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, International debt securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, International equity securities | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, Real estate | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Limited partnerships, U.S. private equity investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Limited partnerships, Diversified fund of funds | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Limited partnerships, Emerging growth | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | 0 | 0 |
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | All other investments | | |
Defined Benefit Plan Disclosure [Line Items] | | |
Fair value of plan assets | $ 0 | $ 0 |