Condensed Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Thousands, $ in Millions	1 Months Ended	2 Months Ended	3 Months Ended	5 Months Ended	6 Months Ended
	Jun. 30, 2023	May 17, 2023	Jun. 30, 2024	May 17, 2023	Jun. 30, 2024
Operating revenues	$ 301	$ 137	$ 489	$ 1,210	$ 998
Fuel and energy purchases	(57)	(69)	(163)	(176)	(313)
Nuclear fuel amortization	(25)	(9)	(28)	(33)	(63)
Unrealized gain (loss) on derivative instruments	(46)	(9)	15	(123)	(12)
Energy Expenses	(128)	(87)	(176)	(332)	(388)
Operating Expenses
Operation, maintenance and development	(69)	(108)	(164)	(285)	(318)
General and administrative	(18)	(22)	(40)	(51)	(83)
Depreciation, amortization and accretion	(28)	(68)	(75)	(200)	(150)
Impairments	0	(16)	0	(381)	0
Operational restructuring	0	0	(1)	0	(1)
Other operating income (expense), net	(3)	(28)	(6)	(37)	(6)
Operating Income (Loss)	55	(192)	27	(76)	52
Nuclear decommissioning trust funds gain (loss), net	39	11	27	57	102
Interest expense and other finance charges	(33)	(59)	(62)	(163)	(121)
Reorganization income (expense), net	0	838	0	799	0
Gain (loss) on sale of assets, net (Note 17)	0	15	561	50	885
Other non-operating income (expense), net	(11)	4	17	10	40
Income (loss) before income taxes	50	617	570	677	958
Income tax benefit (expense)	(19)	(198)	(112)	(212)	(181)
Net Income (Loss)	31	419	458	465	777
Less: Net income (loss) attributable to noncontrolling interest	2	(12)	4	(14)	29
Net Income (Loss) Attributable to Stockholders (Successor) / Member (Predecessor)	$ 29	$ 431	$ 454	$ 479	$ 748
Per Common Share (Successor)
Net Income (Loss) Attributable to Stockholders - Basic (in dollars per share)	$ 0.49		$ 7.90		$ 12.87
Net Income (Loss) Attributable to Stockholders - Diluted (in dollars per share)	$ 0.49		$ 7.60		$ 12.41
Weighted-Average Number of Common Shares Outstanding - Basic (in shares)	59,029	0	57,434	0	58,119
Weighted-Average Number of Common Shares Outstanding - Diluted (in shares)	59,088	0	59,775	0	60,269
Capacity revenues
Operating revenues	$ 26	$ 42	$ 46	$ 108	$ 91
Energy and other revenues
Operating revenues	188	180	367	1,042	939
Unrealized gain (loss) on derivative instruments
Operating revenues	$ 87	$ (85)	$ 76	$ 60	$ (32)