Stock-based Compensation Expense and Share Repurchase Programs - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Equity, Class of Treasury Stock [Line Items]
Amount of shares repurchased	$ 108,007,000	$ 12,001,000	$ 408,033,000	$ 162,018,000
Share Repurchase Program 2018
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be repurchased							$ 500,000,000.0
Shares repurchased (in shares)				832,186
Amount of shares repurchased				$ 150,000,000.0
Cumulative value of shares repurchased						$ 500,000,000.0
Share Repurchase Program 2019
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be repurchased					$ 500,000,000.0
Shares repurchased (in shares)			1,806,587
Amount of shares repurchased			$ 408,000,000.0
Stock repurchase program, remaining amount	$ 56,000,000.0		$ 56,000,000.0