Equity-Based Compensation - Summary of Activity Relating to Restricted Stock (Details)	9 Months Ended
	Sep. 30, 2019 $ / shares shares
Restricted stock
Shares
Outstanding at the beginning of the period (in shares) | shares	20,000
Outstanding at the end of the period (in shares) | shares	20,000
Weighted- Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 44.34
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 44.34
RSUs
Shares
Outstanding at the beginning of the period (in shares) | shares	7,970,959
RSUs granted (in shares) | shares	2,832,312
RSUs vested (in shares) | shares	(2,114,736)
RSUs forfeited/canceled (in shares) | shares	(865,653)
Outstanding at the end of the period (in shares) | shares	7,822,882
Weighted- Average Grant Date Fair Value
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 72.43
RSUs granted (in dollars per share) | $ / shares	142.03
RSUs vested (in dollars per share) | $ / shares	70.46
RSUs forfeited/canceled (in dollars per share) | $ / shares	85.75
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 96.69