REGULATORY ASSETS, LIABILITIES, AND BALANCING ACCOUNTS - (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Regulatory Liabilities [Line Items]
Interest income	$ 520	$ 604	$ 606
Regulatory Balancing Accounts Payable
Regulatory Liabilities [Line Items]
Interest income	223	323	257
Regulatory Balancing Accounts Receivable
Regulatory Liabilities [Line Items]
Interest income	419	537	547
Utility
Regulatory Liabilities [Line Items]
Current regulatory liabilities	965	1,200
Interest income	$ 509	$ 589	$ 593