Employee Benefit Plans - Employee Stock Purchase Plan (Details) - ESPP - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum duration of common stock purchasing period	2 years
Employee stock purchase plan, purchase price offered, percentage of fair market value	85.00%
Purchase period	6 months
Maximum employee subscription rate	10.00%
Number of shares purchased under plan	2	3	3
Employee stock purchase plan, average price of purchased shares (in usd per share)	$ 38.93	$ 25.93	$ 25.24
Number of shares reserved for future issuance	3