Fair Value Measurements (Tables)

12 Months Ended

Mar. 31, 2021

Fair Value Measurements [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis

			Quoted in		Significant Other		Significant
			Identical Markets		Observable Inputs		Unobservable Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Balance at March 31, 2021:
Interest rate cap agreements	$	(22,725)	$	—	$	(22,725)	$	—
Contingent consideration obligation		—		—		—		—
Total	$	(22,725)	$	—	$	(22,725)	$	—
Balance at March 31, 2020:
Interest rate cap agreements	$	(47,408)	$	—	$	(47,408)	$	—
Contingent consideration obligation		(3,000)		—		—		(3,000)
Total	$	(50,408)	$	—	$	(47,408)	$	(3,000)

Reconciliation of Fair Value Derivative Using Unobservable Inputs

	Year Ended March 31, 2021
Balance at beginning of period	$	(3,000)
Gain (loss) included in contingent consideration		3,000
Balance at end of period	$	—

Carrying Amount and Estimated Fair Value of Financial Instruments

	March 31, 2021				March 31, 2020
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Cash and cash equivalents	$	113,101	$	113,101	$	410,405	$	410,405
Investment in business purchase option	$	—	$	—	$	146,500	$	146,500
Senior Credit Facilities (Level 2)	$	3,405,552	$	3,488,883	$	3,682,457	$	3,452,687
Senior Notes (Level 2)	$	1,318,079	$	1,351,500	$	997,772	$	950,000
Debt component of tangible equity units (Level 2)	$	20,345	$	21,435	$	35,431	$	34,806