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EMPLOYEE RETIREMENT PLANS - Net Periodic Pension Cost for Defined-benefit Pension Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Net periodic pension cost for the company's defined-benefit pension plans      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other, net Other, net Other, net
Qualified      
Net periodic pension cost for the company's defined-benefit pension plans      
Service cost $ 2 $ 3 $ 4
Interest cost 4 2 15
Expected return on plan assets (4) (3) (9)
Settlement loss 0 0 404
Recognized net loss 0 3 14
Recognized prior service cost 0 1 1
Net periodic pension cost 3 6 429
Non-Qualified      
Net periodic pension cost for the company's defined-benefit pension plans      
Service cost 0 0 0
Interest cost 6 3 4
Expected return on plan assets 0 0 0
Settlement loss 0 0 0
Recognized net loss 1 3 2
Recognized prior service cost 0 0 0
Net periodic pension cost $ 7 $ 6 $ 6