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EMPLOYEE BENEFITS - Schedule of Net Periodic (Income) Cost (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | $ 4 | $ 3 | $ 3
Interest cost | 51 | 37 | 34
Expected return on plan assets | (92) | (93) | (85)
Amortization of actuarial loss | 17 | 14 | 17
Settlement | 0 | 0 | 15
Net periodic pension cost (income) | (20) | (39) | (16)
Net actuarial loss (gain) | (43) | 52 | (74)
Amortization of actuarial loss | (17) | (14) | (17)
Settlement | 0 | 0 | (15)
Total recognized in OCI | (60) | 38 | (106)
Total recognized in net periodic benefit cost (income) and OCI | (80) | $ (1) | $ (122)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Other operating expense |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Other operating expense
Qualified Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 4 | $ 3 | $ 3
Interest cost | 46 | 34 | 31
Expected return on plan assets | (92) | (93) | (85)
Amortization of actuarial loss | 15 | 11 | 14
Settlement | 0 | 0 | 15
Net periodic pension cost (income) | (27) | (45) | (22)
Net actuarial loss (gain) | (44) | 71 | (73)
Amortization of actuarial loss | (15) | (11) | (14)
Settlement | 0 | 0 | (15)
Total recognized in OCI | (59) | 60 | (102)
Total recognized in net periodic benefit cost (income) and OCI | (86) | 15 | (124)
Non-Qualified Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 0 | 0 | 0
Interest cost | 5 | 3 | 3
Expected return on plan assets | 0 | 0 | 0
Amortization of actuarial loss | 2 | 3 | 3
Settlement | 0 | 0 | 0
Net periodic pension cost (income) | 7 | 6 | 6
Net actuarial loss (gain) | 1 | (19) | (1)
Amortization of actuarial loss | (2) | (3) | (3)
Settlement | 0 | 0 | 0
Total recognized in OCI | (1) | (22) | (4)
Total recognized in net periodic benefit cost (income) and OCI | $ 6 | $ (16) | $ 2

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