Summary of Significant Accounting Policies - Schedule of Reconciliation of Net Income (Loss) Attributable to Common Stockholders to Net Income (Loss) Used in Computing Basic and Diluted Net Income (Loss) Per Share of Common Stock (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Net income (loss) attributable to common stockholders	$ 5,519	$ 721	$ (862)
Less: Buy-out of noncontrolling interest	(5)	31	8
Net income (loss) used in computing net income per share of common stock	5,524	690	(870)
Less: Dilutive convertible debt	(9)	0	0
Net income (loss) used in computing diluted net income (loss) per share of common stock	$ 5,533	$ 690	$ (870)