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Equity-Based Compensation - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Jan. 01, 2020
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of stock options exercised	$ 0.4	$ 3.1
Aggregate intrinsic value of stock options outstanding	1.9
Aggregate intrinsic value of stock options exercisable	5.6
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of stock vested	61.5	$ 81.0
Aggregate intrinsic value of stock unvested	382.3
Unrecognized equity-based compensation	$ 615.1
Weighted average remaining vesting term	1 year 4 months 6 days
2014 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	8,603,066
Number of shares available for future grant (in shares)			5,111,305