Common Stock and Stockholders' Equity - Narrative (Details) $ / shares in Units, $ in Millions		3 Months Ended			6 Months Ended
	Jan. 01, 2022 shares	Jun. 30, 2022 USD ($) $ / shares shares	Mar. 31, 2022 shares	Jun. 30, 2021 shares	Jun. 30, 2022 USD ($) offeringPeriod $ / shares shares	Jun. 30, 2021 USD ($) $ / shares shares	Dec. 31, 2021 $ / shares shares
Class Of Stock [Line Items]
Common stock, shares authorized (in shares)		400,000,000			400,000,000		400,000,000
Common stock, par value (in usd per share) | $ / shares		$ 0.01			$ 0.01		$ 0.01
Common stock, shares outstanding (in shares)		123,300,000			123,300,000		121,600,000
Common stock, shares issued (in shares)		123,300,000			123,300,000		121,600,000
Preferred stock, shares authorized (in shares)		10,000,000			10,000,000		10,000,000
Preferred stock, par value (usd per share) | $ / shares		$ 0.01			$ 0.01		$ 0.01
Preferred stock, shares issued (in shares)		0			0		0
Preferred stock, shares outstanding (in shares)		0			0		0
Intrinsic value of options exercised (in usd per share) | $					$ 30	$ 72
Weighted-average grant date fair value of stock options (in usd per share) | $ / shares					$ 43.72	$ 52.60
Future period share-based compensation expense | $		$ 728			$ 728
Future period share-based compensation expense, period to recognized					2 years 10 months 24 days
2009 Stock Option and Grant Plan
Class Of Stock [Line Items]
Shares of common stock available for issuance (in shares)		0			0
Employee stock
Class Of Stock [Line Items]
Percentage of purchase price of shares lower of the fair market value of common stock employees are able to purchase shares					85.00%
Number of shares repurchased under ESPP (in shares)		300,000		400,000	300,000	400,000
Increase in authorized shares (in shares)	1,200,000
Shares of common stock available for issuance (in shares)		6,200,000			6,200,000
Employee stock option
Class Of Stock [Line Items]
Offering period					18 months
Number of offering periods | offeringPeriod					3
Length of purchase period					6 months
Employee stock option | 2014 Plan
Class Of Stock [Line Items]
Increase in authorized shares (in shares)	6,100,000
Shares of common stock available for issuance (in shares)		20,900,000			20,900,000
Restricted stock units
Class Of Stock [Line Items]
Intrinsic value of shares vested | $					$ 97	$ 183
Shares granted (in shares)					3,634,000
Performance restricted stock units
Class Of Stock [Line Items]
Future period share-based compensation expense | $		$ 11			$ 11
Share-based compensation expense | $		$ 2			$ 3
Performance restricted stock units | Chief Executive Officer and Senior Executives
Class Of Stock [Line Items]
Shares granted (in shares)			100,000
Award vesting period			4 years
Performance restricted stock units | Chief Executive Officer and Senior Executives | Share-based Payment Arrangement, Tranche Two
Class Of Stock [Line Items]
Award requisite service period			1 year