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REVENUE - Activity in Uncollectable Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Deferred for recovery $ 17 $ (15) $ 11
Customer Receivables:      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 64 137 159
Charged to income 73 8 59
Charged to other accounts 39 34 62
Write-offs (121) (115) (143)
Ending balance 55 64 137
Other Receivables:      
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 15 11 10
Charged to income 1 7 4
Charged to other accounts (5) (1)  
Charged to other accounts     4
Write-offs (5) (2) (7)
Ending balance $ 6 $ 15 $ 11