Summary of Significant Accounting Policies - Schedule of Reconciliation of Basic to Diluted Weighted Average Shares Used in Computing Net Income Per Share of Common Stock Attributable to Common Stockholders (Detail) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accounting Policies [Abstract]
Weighted average shares used in computing net income per share of common stock, basic (in shares)	3,176	3,146	3,171	3,120
Stock-based awards (in shares)	304	301	297	311
Convertible senior notes (in shares)	2	2	2	4
Warrants (in shares)	11	19	11	39
Weighted average shares used in computing net income per share of common stock, diluted (in shares)	3,493	3,468	3,481	3,474