Consolidated Statement of Capitalization - USD ($) shares in Millions, $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Regulated Operations [Abstract]
TOTAL SHAREHOLDERS' EQUITY BEFORE ACCUMULATED OTHER COMPREHENSIVE INCOME (in shares)	361	347
TOTAL SHAREHOLDERS' EQUITY BEFORE ACCUMULATED OTHER COMPREHENSIVE INCOME	$ 24,175	$ 21,933
Pension and other postretirement benefit plan liability adjustments, net of taxes	16	30
Unrealized losses on derivatives qualified as cash flow hedges, less reclassification adjustment for gains (losses) included in net income and reclassification adjustment for unrealized losses included in regulatory assets, net of taxes	(1)	(1)
TOTAL ACCUMULATED OTHER COMPREHENSIVE INCOME, NET OF TAXES	15	29
Total Shareholders' Equity (See Consolidated Statement of Shareholders' Equity)	$ 24,190	$ 21,962	$ 21,158	$ 20,889