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RETIREMENT BENEFITS PLANS - Fair Value of Pension Plan Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |
United States pension plans percentage of worldwide pension assets | 64.00% |
United Kingdom pension plans percentage of worldwide pension assets | 25.00% |
United States pension plans' target allocation of United States equities | 19.00% |
United States pension plans' target allocation of non-United States equities | 13.00% |
United States pension plans' target allocation of real estate | 3.00% |
United State pension plans' target allocation of debt securities | 54.00% |
United States pension plans' target allocation of other, including private equity, private debt, and cash equivalents | 11.00% |
United Kingdom pension plans' target allocation of equities | 32.00% |
Total pension plan assets | $ 4,121 | $ 5,919
Pending purchases and sales of plan assets, and interest receivable | (69) | (99)
Unfunded commitments | 180 | 192
Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 834 | 806
Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 1,694 | 2,827
Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 559 | 535
Non-United States equity and global equities | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 173 | 586
Non-United States equity and global equities | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Non-United States equity and global equities | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 173 | 586
Non-United States equity and global equities | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
United States equity | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 54 | 240
United States equity | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
United States equity | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 54 | 240
United States equity | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Fixed income | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 620 | 624
Fixed income | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Fixed income | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 620 | 624
Fixed income | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Fixed income securities | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 744 | 1,074
Fixed income securities | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Fixed income securities | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 744 | 1,074
Fixed income securities | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
United States treasuries | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 660 | 417
United States treasuries | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 660 | 417
United States treasuries | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
United States treasuries | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Bank loans | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets |  | 117
Bank loans | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets |  | 0
Bank loans | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets |  | 117
Bank loans | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets |  | 0
Real estate | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 295 | 471
Real estate | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 76 | 237
Real estate | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 20 | 18
Real estate | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 199 | 216
Equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets |  | 2
Equity securities | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets |  | 2
Equity securities | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets |  | 0
Equity securities | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets |  | 0
Cash equivalents | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 77 | 150
Cash equivalents | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 21 | 28
Cash equivalents | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 56 | 122
Cash equivalents | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Exchange traded funds | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 77 | 122
Exchange traded funds | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 77 | 122
Exchange traded funds | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Exchange traded funds | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Other | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 387 | 365
Other | Quoted prices in active markets for identical assets (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 0 | 0
Other | Other observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 27 | 46
Other | Unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 360 | 319
Common collective and other trusts measured at net asset value | Fair Value Measured at Net Asset Value Per Share |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | 1,100 | 1,841
Money market funds measured at net asset value | Fair Value Measured at Net Asset Value Per Share |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total pension plan assets | $ 3 | $ 9

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