Income Taxes (Schedule of Deferred Tax Assets (Liabilities)) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Income Taxes [Abstract]
Investment in the Joint Venture		$ (190,448)
Depreciation and amortization	$ (1,034,407)
Accounts receivable	5,793
Fair value of interest rate cap agreements	14,011
Accruals and reserves	15,680
Net operating losses	348,329	19,958
Debt discount and interest	(9,661)
Equity compensation	18,560
Valuation allowance	(29,350)
Tax receivable agreements obligation to related parties	68,900
163(j) Business interest expense limitation	23,842	7,711
Tax credits	16,629	2,786
Accounting method change (ASC 606 adoption)	(31,886)
Residual deferred tax assets	12,072
Other	(3,696)
Net deferred tax assets (liabilities)	(585,184)	(159,993)
Reported as:
Non-current deferred tax assets	30,720
Non-current deferred tax liabilities	(615,904)	(159,993)
Net deferred tax assets (liabilities)	$ (585,184)	$ (159,993)