Supplementary Financial Information - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Domestic Tax Jurisdiction
Impaired Long-Lived Assets Held and Used [Line Items]
Taxes paid	$ 5	$ 0	$ 1
State and Local Jurisdiction
Impaired Long-Lived Assets Held and Used [Line Items]
Taxes paid	59	44	33
Proceeds from income tax refunds	$ 9	$ 13	$ 8