Revenue (Deferred Revenue Activity) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Contract Liability [Roll Forward]
Beginning Balance	$ 138	$ 106
Increases due to cash received or receivable, excluding amounts recognized as revenue during the period	51	35
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(43)	(25)
Ending Balance	$ 146	$ 116