Consolidated Statements of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Activities
Net Income		$ 1,404	$ 1,397	$ 1,083
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization		1,732	1,606	1,468
Nuclear fuel amortization		55	59	42
Allowance for equity funds used during construction		(86)	(42)	(29)
Deferred income taxes		194	181	44
Equity (earnings) losses of equity method investees		(15)	(3)	14
Dividends from equity method investees		3	3	4
Asset (gains) losses and impairments, net		28	16	(5)
Changes in assets and liabilities:
Accounts receivable, net		(40)	398	(352)
Inventories		(191)	(110)	(98)
Prepaid postretirement benefit costs		(72)	(62)	107
Accounts payable		45	(306)	109
Accrued pension liability		(136)	(28)	39
Accrued postretirement liability		(68)	14	(71)
Derivative assets and liabilities		25	(321)	65
Regulatory assets and liabilities		586	594	(766)
Other current and noncurrent assets and liabilities		179	(176)	323
Net cash from operating activities		3,643	3,220	1,977
Investing Activities
Plant and equipment expenditures — utility		(4,399)	(3,872)	(3,311)
Plant and equipment expenditures — non-utility		(68)	(62)	(67)
Proceeds from sale of assets		46	3	24
Proceeds from sale of nuclear decommissioning trust fund assets		555	681	879
Investment in nuclear decommissioning trust funds		(559)	(678)	(878)
Distributions from equity method investees		30	25	16
Contributions to equity method investees		(27)	(27)	(13)
Notes receivable		(449)	(86)	(30)
Investment in time deposits		(1,050)	0	0
Redemption of time deposits		1,050	0	0
Other		(80)	(79)	(51)
Net cash used for investing activities		(4,951)	(4,095)	(3,431)
Financing Activities
Issuance of long-term debt, net of discount and issuance costs		4,533	3,167	2,171
Redemption of long-term debt		(2,139)	(1,616)	(1,587)
Short-term borrowings, net		(216)	121	404
Issuance of common stock		0	0	1,300
Repurchase of common stock		0	0	(55)
Dividends paid on common stock		(810)	(752)	(685)
Other		(23)	(37)	(86)
Net cash from financing activities		1,345	883	1,462
Net Increase in Cash, Cash Equivalents, and Restricted Cash		37	8	8
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period		51	43	35
Cash, Cash Equivalents, and Restricted Cash at End of Period		88	51	43
Supplemental disclosure of cash information
Cash paid (received) for: Interest, net of interest capitalized		869	751	638
Cash paid (received) for: Income taxes	[1]	(230)	(5)	(3)
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable		$ 454	$ 490	$ 435

[1] 2024 cash received primarily relates to the sale of PTCs and ITCs. See Note 9 to the Consolidated Financial Statements, "Income Taxes," for additional information.