OTHER CONTINGENCIES AND COMMITMENTS (Tax Matters) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2024
Investments, Owned, Federal Income Tax Note [Line Items]
Income tax deduction, repair costs	$ 850
Income tax deduction, customer bill credits	$ 400
Utility
Investments, Owned, Federal Income Tax Note [Line Items]
Income tax deduction, accrued amount		$ 70