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EMPLOYEE RETIREMENT PLANS - Other and Cash Flows (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Non-Qualified    
Defined Benefit Plan Disclosure [Line Items]    
Payments to participants defined-benefit pension plans $ 12  
Defined-contribution plans    
Defined Benefit Plan Disclosure [Line Items]    
Aggregate present value of unfunded accumulated post-retirement benefit obligation $ 9 $ 10