Income Taxes - Schedule of Changes to Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Beginning Balance	$ 380	$ 273	$ 253
Decreases in balances related to prior year tax positions	90		39
Increases in balances related to prior year tax positions	117	66
Increases in balances related to current year tax positions	124	41	59
Unrecognized Tax Benefits, Ending Balance	$ 531	$ 380	$ 273