Equity-Based Compensation Expense (Expense by Plan) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jun. 19, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense		$ 10,445	$ 28,174	$ 65,369	$ 67,844
Percentage of outstanding stock	15.00%			15.00%
Equity-based compensation - Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense		7,607	13,673	$ 33,388	48,228
Equity-based compensation - Plan (Plan of Arrangement Awards) (1)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense		2,688	10,772	14,680	11,086
Equity-based compensation - other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense		$ 150	$ 3,729	$ 17,301	$ 8,530