Equity-Based Compensation - Restricted Stock Grant (Details) - Restricted Stock - $ / shares						12 Months Ended
	Apr. 02, 2018	Feb. 09, 2018	Feb. 03, 2017	Feb. 03, 2016	Dec. 21, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		3 years			3 years
Grants in period, weighted average grant date fair value (in dollars per share)				$ 45.85	$ 32.37	$ 46.27	$ 38.31	$ 28.56
Granted (in shares)		772,642			318,000	1,146,586	982,764	844,646
Tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years		4 years	3 years
Grants in period, weighted average grant date fair value (in dollars per share)	$ 46.90			$ 28.29
Granted (in shares)	159,915		681,410	247,437
Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	2 years 3 months 19 days		3 years	4 years
Grants in period, weighted average grant date fair value (in dollars per share)			$ 37.90
Granted (in shares)	200,427		203,160	552,311
Various Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)						3 years	2 years	4 years
Granted (in shares)						13,602	98,194	44,898
Various Grants | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period, weighted average grant date fair value (in dollars per share)						$ 50.15	$ 41.90	$ 32.74
Various Grants | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period, weighted average grant date fair value (in dollars per share)						$ 53.70	$ 42.25	$ 34.84