Property, Plant, and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Assets
Gross Value	$ 3,642	$ 4,025
Accumulated Provision	(414)	(186)
Carrying Value	3,228	3,839
Electric generation
Finite-Lived Assets
Gross Value	3,020	3,178
Accumulated Provision	(246)	(109)
Carrying Value	2,774	3,069
Nuclear fuel
Finite-Lived Assets
Gross Value	322	228
Accumulated Provision	(129)	(55)
Carrying Value	193	173
Other property and equipment
Finite-Lived Assets
Gross Value	148	358
Accumulated Provision	(36)	(21)
Carrying Value	112	337
Capitalized software
Finite-Lived Assets
Gross Value	9	6
Accumulated Provision	(3)	(1)
Carrying Value	6	5
Construction work in progress
Finite-Lived Assets
Gross Value	143	255
Carrying Value	$ 143	$ 255
Minimum | Electric generation
Finite-Lived Assets
Estimated Useful Life (years)	3 years
Minimum | Nuclear fuel
Finite-Lived Assets
Estimated Useful Life (years)	1 year
Minimum | Other property and equipment
Finite-Lived Assets
Estimated Useful Life (years)	1 year
Minimum | Capitalized software
Finite-Lived Assets
Estimated Useful Life (years)	1 year
Maximum | Electric generation
Finite-Lived Assets
Estimated Useful Life (years)	27 years
Maximum | Nuclear fuel
Finite-Lived Assets
Estimated Useful Life (years)	6 years
Maximum | Other property and equipment
Finite-Lived Assets
Estimated Useful Life (years)	26 years
Maximum | Capitalized software
Finite-Lived Assets
Estimated Useful Life (years)	5 years