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Stock-Based Compensation - Summary of Restricted Stock Unit and Performance Share Transaction (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restricted Stock Units
Units/Shares Activity
Outstanding as of beginning period (in shares)	705,136
Granted (in shares)	168,811
Distributed (vested) (in shares)	(220,122)
Cancelled (in shares)	(37,241)
Outstanding as of end of period (in shares)	616,584	705,136
Vested or expected to vest (in shares)	616,584
Weighted Average Grant Date Fair Value
Outstanding as of beginning of period (in dollars per share)	$ 128.71
Granted (in dollars per share)	129.40	$ 134.65	$ 168.86
Outstanding as of end of period (in dollars per share)	$ 124.83	$ 128.71
Performance Shares
Units/Shares Activity
Outstanding as of beginning period (in shares)	849,544
Granted (in shares)	346,317
Distributed (vested) (in shares)	(129,920)
Cancelled (in shares)	(256,470)
Outstanding as of end of period (in shares)	809,471	849,544
Vested or expected to vest (in shares)	299,390
Weighted Average Grant Date Fair Value
Outstanding as of beginning of period (in dollars per share)	$ 140.83
Granted (in dollars per share)	147.53	$ 124.48	$ 179.40
Outstanding as of end of period (in dollars per share)	$ 143.48	$ 140.83
Stock Options
Units/Shares Activity
Outstanding as of beginning period (in shares)	0
Granted (in shares)	108,446
Distributed (vested) (in shares)	0
Cancelled (in shares)	0
Outstanding as of end of period (in shares)	108,446	0
Vested or expected to vest (in shares)	108,446
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 30.32
Outstanding as of end of period (in dollars per share)	$ 30.32

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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