Employee Benefit Plans - Equity Incentive Plans (Details)	1 Months Ended			12 Months Ended
	May 31, 2020 shares	May 31, 2019 shares	May 31, 2017 shares	Dec. 31, 2022 USD ($) offeringPeriod shares	Dec. 31, 2021 shares	May 31, 2015 shares
Share-Based Compensation Plans
ESPP, offering period				24 months
ESPP, number of offering period | offeringPeriod				4
ESPP, purchase period				6 months
ESPP, purchase price				85.00%
Common stock - shares issued (in shares)				322,900,000	321,600,000
Equity Incentive Plan 2015
Share-Based Compensation Plans
Number of shares authorized (in shares)						38,000,000
Additional shares authorized (in shares)		3,700,000	23,000,000	4,500,000
Aggregate shares subject to outstanding equity awards (in shares)				16,600,000
Number of shares available for future issuance (in shares)				3,400,000	5,100,000
Equity Incentive Plan 1996 and 2006
Share-Based Compensation Plans
Maximum additional shares expired, unexercised, canceled (in shares)						29,000,000
Employee Stock Purchase Plan 2008
Share-Based Compensation Plans
Number of shares authorized (in shares)				43,000,000
Additional shares authorized (in shares)	8,000,000
Number of shares available for future issuance (in shares)				6,200,000
Discount on share purchase price for purchases made under ESPP				15.00%
Periodic payroll deduction - percentage of base salary				10.00%
ESPP individual purchase limits (in shares)				6,000
Period for share purchases under ESPP				12 months
ESPP individual purchase limits | $				$ 25,000
Period for ESPP purchases				1 year
Common stock - shares issued (in shares)				36,800,000