Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Accounts receivable – customers, net allowance for uncollectible accounts	$ 507	$ 620
Other receivables, less allowance for uncollectible accounts	35	41
Non-utility property, less accumulated depreciation	$ 25	$ 25
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares outstanding (in shares)	361,121,447	346,597,693
Treasury stock, par value (in dollars per share)	$ 0.10	$ 0.10
Treasury shares (in shares)	33,753,963	33,753,963
Common Stock, Shares, Issued	361,000,000	347,000,000