Accumulated Other Comprehensive (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 28,090	$ 24,779	$ 22,180
Other comprehensive income (loss) before taxes	5	(1)
Tax effects	0	0
Other comprehensive income (loss)	5	(1)	4
Ending balance	29,351	28,090	24,779
Significant amount reclassified out of AOCI	0	0
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(8)	(7)
Other comprehensive income (loss) before taxes	4	(1)
Tax effects	0	0
Other comprehensive income (loss)	4	(1)
Ending balance	(4)	(8)	(7)
Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1)	(1)
Other comprehensive income (loss) before taxes	1	0
Tax effects	0	0
Other comprehensive income (loss)	1	0
Ending balance	0	(1)	(1)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(9)	(8)	(12)
Other comprehensive income (loss)	5	(1)	4
Ending balance	$ (4)	$ (9)	$ (8)