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FAIR VALUE MEASUREMENTS - Part 1 (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Cash held - offsetting derivative net asset positions under master-netting arrangements $ (17) $ 0
Cash posted - total 0 9
Long-term debt, fair value 12,600 12,700
Long-term debt 13,200 13,600
Fair Value, Recurring [Member] | Gross Fair Value Measurement [Member]    
Derivative assets    
Derivative asset, fair value, gross 152 178
Derivative liabilities    
Derivative liability, fair value, gross (89) (125)
Fair Value, Recurring [Member] | Gross Fair Value Measurement [Member] | Financial Contracts    
Derivative assets    
Derivative asset, fair value, gross 151 167
Derivative liabilities    
Derivative liability, fair value, gross (89) (125)
Fair Value, Recurring [Member] | Gross Fair Value Measurement [Member] | Interest Rate Contracts    
Derivative assets    
Interest-rate contracts 1 11
Fair Value, Recurring [Member]    
Derivative assets    
Derivative assets 46 53
Derivative assets netting (106) (125)
Derivative liabilities    
Derivative liabilities 0 0
Derivative liabilities netting 89 125
Fair Value, Recurring [Member] | Financial Contracts    
Derivative assets    
Derivative assets 45 42
Derivative assets netting (106) (125)
Derivative liabilities    
Derivative liabilities 0 0
Derivative liabilities netting 89 125
Fair Value, Recurring [Member] | Interest Rate Contracts    
Derivative assets    
Interest-rate contracts 1 11
Derivative assets netting 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Derivative assets    
Derivative asset, fair value, gross 46 15
Derivative liabilities    
Derivative liability, fair value, gross (23) (38)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Financial Contracts    
Derivative assets    
Derivative asset, fair value, gross 46 15
Derivative liabilities    
Derivative liability, fair value, gross (23) (38)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Rate Contracts    
Derivative assets    
Interest-rate contracts 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivative assets    
Derivative asset, fair value, gross 106 163
Derivative liabilities    
Derivative liability, fair value, gross (66) (87)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Financial Contracts    
Derivative assets    
Derivative asset, fair value, gross 105 152
Derivative liabilities    
Derivative liability, fair value, gross (66) (87)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Contracts    
Derivative assets    
Interest-rate contracts 1 11
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Derivative assets    
Derivative asset, fair value, gross 0 0
Derivative liabilities    
Derivative liability, fair value, gross 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Financial Contracts    
Derivative assets    
Derivative asset, fair value, gross 0 0
Derivative liabilities    
Derivative liability, fair value, gross 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Contracts    
Derivative assets    
Interest-rate contracts $ 0 $ 0