Property Plant and Equipment Property Plant and Equipment (Details) - USD ($) $ in Millions		Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Property, plant and equipment		$ 13,489	$ 12,143
Accumulated Depreciation		(3,063)	(2,892)
Property, plant and equipment, net		10,426	9,251
Electric plant
Property, Plant and Equipment [Line Items]
Property, plant and equipment		12,210	11,443
Plant to be Retired [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	[1]	162	182
CWIP
Property, Plant and Equipment [Line Items]
Property, plant and equipment		$ 1,117	$ 518

[1] Amounts include Tolk Unit 1 and 2. Amounts are reported net of accumulated depreciation.