Income Taxes - Components of Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current:
Federal				$ 0	$ 48	$ 0
State				45	57	62
Foreign				1,315	1,243	1,266
Total current				1,360	1,348	1,328
Deferred:
Federal				831	(5,246)	26
State				(49)	(653)	1
Foreign				(305)	(450)	(223)
Total deferred				477	(6,349)	(196)
Total provision for (benefit from) income taxes	$ 601	$ 393	$ 409	$ 1,837	$ (5,001)	$ 1,132