RETIREMENT AND POSTRETIREMENT BENEFIT PLANS - Defined Benefit Plan Assets by Category (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 |
Equities - emerging markets | U.S. Pension Plan | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | | $ 0 | |
U.S. Pension Plan | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | $ 192 | 176 | |
U.S. Pension Plan | Cash and cash equivalents | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 5 | 10 | |
U.S. Pension Plan | Equities - developed markets | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 58 | 41 | |
U.S. Pension Plan | Equities - emerging markets | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 7 | | |
U.S. Pension Plan | Government securities | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 50 | 7 | |
U.S. Pension Plan | Corporate bonds | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 72 | 108 | |
U.S. Pension Plan | Other fixed income securities | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 9 | |
U.S. Pension Plan | Derivatives | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 1 | |
U.S. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 70 | 17 | |
U.S. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Cash and cash equivalents | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 5 | 10 | |
U.S. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Equities - developed markets | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 58 | 0 | |
U.S. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Equities - emerging markets | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 7 | 0 | |
U.S. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Government securities | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 7 | |
U.S. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Corporate bonds | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.S. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Other fixed income securities | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.S. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Derivatives | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.S. Pension Plan | Significant Observable Inputs (Level 2) | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 122 | 159 | |
U.S. Pension Plan | Significant Observable Inputs (Level 2) | Cash and cash equivalents | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.S. Pension Plan | Significant Observable Inputs (Level 2) | Equities - developed markets | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 41 | |
U.S. Pension Plan | Significant Observable Inputs (Level 2) | Equities - emerging markets | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.S. Pension Plan | Significant Observable Inputs (Level 2) | Government securities | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 50 | 0 | |
U.S. Pension Plan | Significant Observable Inputs (Level 2) | Corporate bonds | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 72 | 108 | |
U.S. Pension Plan | Significant Observable Inputs (Level 2) | Other fixed income securities | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 9 | |
U.S. Pension Plan | Significant Observable Inputs (Level 2) | Derivatives | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 1 | |
U.K. Pension Plan | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 95 | 84 | |
U.K. Pension Plan | Cash and cash equivalents | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 1 | 2 | |
U.K. Pension Plan | Equities - emerging markets | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Diversified growth funds | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 8 | 6 | |
U.K. Pension Plan | Multi-asset credit | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 10 | 8 | |
U.K. Pension Plan | Absolute return fixed income | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 1 | 4 | |
U.K. Pension Plan | Liability driven investments | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 32 | 30 | |
U.K. Pension Plan | Cash flow driven investments | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 29 | 25 | |
U.K. Pension Plan | Private equity | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 14 | 9 | |
U.K. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 1 | 2 | |
U.K. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Cash and cash equivalents | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 1 | 2 | |
U.K. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Equities - emerging markets | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Diversified growth funds | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Multi-asset credit | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Absolute return fixed income | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Liability driven investments | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Cash flow driven investments | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Quoted Prices in Active Markets For Identical Assets (Level 1) | Private equity | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Significant Observable Inputs (Level 2) | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 80 | 73 | |
U.K. Pension Plan | Significant Observable Inputs (Level 2) | Cash and cash equivalents | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Significant Observable Inputs (Level 2) | Equities - emerging markets | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
U.K. Pension Plan | Significant Observable Inputs (Level 2) | Diversified growth funds | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 8 | 6 | |
U.K. Pension Plan | Significant Observable Inputs (Level 2) | Multi-asset credit | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 10 | 8 | |
U.K. Pension Plan | Significant Observable Inputs (Level 2) | Absolute return fixed income | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 1 | 4 | |
U.K. Pension Plan | Significant Observable Inputs (Level 2) | Liability driven investments | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 32 | 30 | |
U.K. Pension Plan | Significant Observable Inputs (Level 2) | Cash flow driven investments | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 29 | 25 | |
U.K. Pension Plan | Significant Observable Inputs (Level 2) | Private equity | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | 0 | 0 | |
Pension Plan | | | |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | | | |
Fair value of plan assets | $ 317 | $ 286 | $ 431 |