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Stockholders' Equity (Details) - Class A common stock - USD ($)	3 Months Ended	50 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Oct. 22, 2018
Equity, Class of Treasury Stock [Line Items]
Additional authorized repurchase amount			250,000,000
Authorized repurchase amount	$ 500,000,000	$ 500,000,000
Shares repurchased pursuant to repurchase authorizations (in shares)	529,303	3,684,398
Shares repurchased pursuant to repurchase authorizations, average price (in dollars per share)	$ 82.76	$ 84.19
Remaining authorized repurchase amount	$ 189,800,000	$ 189,800,000
Number of shares repurchased	29,627
Average purchase price per share (in dollars per share)	$ 146.62
Restricted Stock Units (RSUs)
Equity, Class of Treasury Stock [Line Items]
Amount related to tax withholdings associated with vesting of RSUs	$ 4,300,000

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