Common Stock - Additional Information (Details) shares in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($)
Schedule Of Common Stock [Line Items]
Senior leverage ratio	3.0
Cost of shares repurchased to settle statutory employee withholding related to vesting of stock awards	$ 59,604,000	$ 27,163,000	$ 17,484,000
Share Repurchase Program
Schedule Of Common Stock [Line Items]
Stock repurchase program authorized to be repurchased (in shares) | shares	2.3	1.2
Payment for acquisition of treasury stock	$ 57,600,000	$ 25,300,000
Shares repurchased to settle statutory employee withholding related to vesting of stock awards (in shares) | shares	0.1	0.1
Cost of shares repurchased to settle statutory employee withholding related to vesting of stock awards	$ 2,000,000.0	$ 1,900,000
Maximum
Schedule Of Common Stock [Line Items]
Annual share repurchase limit	$ 35,000,000.0