Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Variable Interest Entity [Line Items]
Investment in unconsolidated entities, maximum exposure	$ 6		$ 6
Capital contributions, loans or advances	207	$ 207
USCC EIP LLC
Variable Interest Entity [Line Items]
Capital contributions, loans or advances	$ 187	$ 193