Stock-based Compensation - Summary Information about Stock Options Outstanding (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options outstanding, weighted average exercise price (in dollars per share)	$ 34.71	$ 30.42
$19.92-20.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	19.92
Exercise price, upper range limit (in dollars per share)	$ 20
Options Outstanding	11,250
Options outstanding, weighted average remaining contractual life (in years)	4 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 19.92
Options Exercisable	11,250
Options exercisable, weighted average exercise price (in dollars per share)	$ 19.92
20.01-30.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	20.01
Exercise price, upper range limit (in dollars per share)	$ 30
Options Outstanding	1,006,783
Options outstanding, weighted average remaining contractual life (in years)	6 years 2 months 23 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 25.51
Options Exercisable	851,403
Options exercisable, weighted average exercise price (in dollars per share)	$ 25.21
30.01-40.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	30.01
Exercise price, upper range limit (in dollars per share)	$ 40
Options Outstanding	97,301
Options outstanding, weighted average remaining contractual life (in years)	5 years 3 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 32.16
Options Exercisable	97,301
Options exercisable, weighted average exercise price (in dollars per share)	$ 32.16
40.01-50.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	40.01
Exercise price, upper range limit (in dollars per share)	$ 50.00
Options Outstanding	330,890
Options outstanding, weighted average remaining contractual life (in years)	8 years 14 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 47.26
Options Exercisable	103,430
Options exercisable, weighted average exercise price (in dollars per share)	$ 47.26
50.01-54.18
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	50.01
Exercise price, upper range limit (in dollars per share)	$ 54.18
Options Outstanding	283,590
Options outstanding, weighted average remaining contractual life (in years)	9 years 7 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 54.18
Options Exercisable	0
Options exercisable, weighted average exercise price (in dollars per share)	$ 0
19.92-54.18
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit (in dollars per share)	19.92
Exercise price, upper range limit (in dollars per share)	$ 54.18
Options Outstanding	1,729,814
Options outstanding, weighted average remaining contractual life (in years)	6 years 11 months 4 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 34.71
Options Exercisable	1,063,384
Options exercisable, weighted average exercise price (in dollars per share)	$ 27.93