Stockholders’ Equity - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	May 06, 2020	Aug. 06, 2014
Class of Stock [Line Items]
Remaining authorized repurchase amount						$ 133,300,000
Repurchases of common stock	$ 111,600,000	$ 9,200,000	$ 158,700,000	$ 110,400,000
Weighted-average Remaining Lease Term - Operating Leases	6 years 7 months 6 days	6 years 9 months 18 days	6 years 7 months 6 days	6 years 9 months 18 days
Weighted-average Discount Rate - Finance Leases	4.00%	4.00%	4.00%	4.00%
Weighted-average Discount Rate - Operating Leases	3.40%	3.80%	3.40%	3.80%
Value of additional shares authorized to be repurchased					$ 200,000,000.0
Stock Repurchased and Retired During Period, Value	$ 111,600,000	$ 9,200,000	$ 158,700,000	$ 110,400,000
Employee Stock Purchase Plan | Employee Stock Option
Class of Stock [Line Items]
Price per share (in dollars per share)	$ 62.82	$ 61.64	$ 62.82	$ 61.64
Compensation costs	$ 200,000	$ 200,000	$ 400,000	$ 300,000
Employee Stock Purchase Plan | Share-based Payment Arrangement
Class of Stock [Line Items]
Shares issued under employee stock purchase plan (in shares)	17,000	13,000	32,000	27,000
Common Stock
Class of Stock [Line Items]
Repurchases of common stock (in shares)	1,400,000	128,000	2,000,000.0	1,617,000
Repurchases of common stock	$ 200,000	$ 100,000	$ 200,000	$ 200,000
Average cost per share (in dollars per share)	$ 76.92	$ 71.85	$ 77.63	$ 68.29
Weighted-average Remaining Lease Term - Finance Leases	3 months 18 days	1 year 2 months 12 days	3 months 18 days	1 year 2 months 12 days
Stock Repurchased and Retired During Period, Shares	1,451,000		2,045,000