Asset Impairments (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Asset Impairments
Impairment losses on investments				$ 39	$ 7	$ 102
Asset impairment losses				0	36	$ 26
Goodwill impairment losses					15
West/Other
Asset Impairments
Asset impairment losses		$ 14	$ 20
Goodwill impairment losses		15
Texas
Asset Impairments
Asset impairment losses		7	2
Goodwill impairment losses					0
East
Asset Impairments
Asset impairment losses			4
Goodwill impairment losses					$ 0
Gladstone
Asset Impairments
Impairment losses on investments	$ 39	$ 7		$ 39
Gladstone | West/Other
Asset Impairments
Impairment losses on investments			$ 102