CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 1,165	$ 59	$ 4,865
Other comprehensive (loss) income, net of tax
Foreign currency translation adjustments	(57)	50	(10)
Net unrealized gains on available-for-sale securities	31	23	135
Total other comprehensive (loss) income, net of tax	(26)	73	125
Comprehensive income	$ 1,139	$ 132	$ 4,990