Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows — operating activities:
Net income (loss)	$ 2,812	$ 1,492	$ (1,210)
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:
Depreciation and amortization	2,631	1,956	2,047
Deferred income tax expense (benefit), net	607	457	(359)
Gain on sale of land	0	(95)	(8)
Impairment of long-lived and other assets	0	49	74
Unrealized net (gain) loss from mark-to-market valuations of commodities	(1,155)	(490)	2,510
Unrealized net (gain) loss from mark-to-market valuations of interest rate swaps	(53)	36	(250)
Unrealized net gain from nuclear decommissioning trusts	(116)	0	0
Change in asset retirement obligation liability	38	27	13
Asset retirement obligation accretion expense	114	34	34
Impacts of Tax Receivable Agreement	5	164	128
Gain on TRA repurchase and tender offers	(10)	(29)	0
Bad debt expense	183	164	179
Stock-based compensation	100	77	63
Other, net	(89)	103	(71)
Changes in operating assets and liabilities:
Accounts receivable — trade	(242)	214	(852)
Inventories	(31)	(174)	36
Accounts payable — trade	19	(350)	94
Commodity and other derivative contractual assets and liabilities	(175)	82	(228)
Margin deposits, net	842	1,899	(1,874)
Uplift securitization proceeds receivable from ERCOT	0	0	544
Accrued interest	(18)	46	16
Accrued taxes	(1)	5	(8)
Accrued employee incentive	8	58	21
Asset retirement obligation settlement	(88)	(81)	(87)
Major plant outage deferral	(91)	(32)	20
Other — net assets	(616)	84	(17)
Other — net liabilities	(111)	(243)	(330)
Cash provided by operating activities	4,563	5,453	485
Cash flows — investing activities:
Capital expenditures, including nuclear fuel purchases and LTSA prepayments	(2,078)	(1,676)	(1,301)
Energy Harbor acquisition (net of cash acquired)	(3,065)	0	0
Proceeds from sales of nuclear decommissioning trust fund securities	2,216	601	670
Investments in nuclear decommissioning trust fund securities	(2,239)	(624)	(693)
Proceeds from sales of environmental allowances	773	500	1,275
Purchases of environmental allowances	(1,226)	(1,071)	(1,303)
Proceeds from sales of property, plant, and equipment, including nuclear fuel	196	115	78
Proceeds from sales of transferable ITCs	150	0	0
Other, net	(3)	10	35
Cash used in investing activities	(5,276)	(2,145)	(1,239)
Cash flows — financing activities:
Issuances of long-term debt	3,817	2,498	1,498
Repayments/repurchases of debt	(2,287)	(33)	(251)
Net borrowings (repayments) under accounts receivable financing	750	(425)	425
Borrowings under Revolving Credit Facility	50	100	1,750
Repayments under Revolving Credit Facility	(50)	(350)	(1,500)
Borrowings under Commodity-Linked Facility	1,802	0	3,150
Repayments under Commodity-Linked Facility	(1,802)	(400)	(2,750)
Debt issuance costs	(76)	(59)	(31)
Stock repurchases	(1,266)	(1,245)	(1,949)
Dividends paid to common stockholders	(305)	(313)	(302)
Dividends paid to preferred stockholders	(173)	(150)	(151)
Dividends paid to noncontrolling and redeemable noncontrolling interest holders	(180)	0	0
Principal payment on Closing Date	(1,748)	0	0
TRA Repurchase and tender offer — return of capital	(122)	0	0
Other, net	(14)	83	31
Cash used in financing activities	(1,604)	(294)	(80)
Net change in cash, cash equivalents and restricted cash	(2,317)	3,014	(834)
Cash, cash equivalents and restricted cash — beginning balance	3,539	525	1,359
Cash, cash equivalents and restricted cash — ending balance	$ 1,222	$ 3,539	$ 525