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REVENUE - Receivables from Customers (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customers	$ 1,585	$ 1,382
Less: Uncollectible Reserve	55	64
Receivable	1,530	1,318
Billed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customers	867	717
Billed | Financial Asset, Greater than 30 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customers	284	288
Unbilled
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customers	$ 718	$ 665

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