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