Income Taxes (Schedule of Deferred Tax Assets (Liabilities)) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Income Taxes [Abstract]
Depreciation and amortization	$ (1,046,755)	$ (1,034,407)
Net operating losses	299,606	348,329
Tax receivable agreements obligation to related parties	67,633	68,900
Fair value of interest rate cap agreements	1,466	14,011
Accruals and reserves	60,661	15,680
Tax credits	38,138	16,629
Debt discount and interest	(6,594)	(9,661)
Equity compensation	38,289	18,560
Valuation allowance	(20,238)	(29,350)
163(j) Business interest expense limitation	2,056	23,842
Accounting method change (ASC 606 adoption)	(23,315)	(31,886)
Right of use asset	(24,262)
Right of use liability	27,377
Residual deferred tax assets	5,518	12,072
Accounts receivable	6,107	5,793
Other	(2,779)	(3,696)
Net deferred tax assets (liabilities)	(577,092)	(585,184)
Reported as:
Non-current deferred tax assets	28,199	30,720
Non-current deferred tax liabilities	(605,291)	(615,904)
Net deferred tax assets (liabilities)	$ (577,092)	$ (585,184)