Interest Rate Cap Agreements (Schedule of Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Derivatives Fair Value [Line Items]
Prepaid expenses and other current assets	$ 177,659	$ 140,258
Other noncurrent assets, net	600,061	430,141
Accrued expenses	(461,506)	(484,293)
Other long-term liabilities	(73,118)	(65,572)
Fair Values of Derivative Instruments Asset (Liability) Derivatives		(23,063)
Designated as Hedging Instrument [Member] | Interest Rate Cap Agreements [Member]
Derivatives Fair Value [Line Items]
Prepaid expenses and other current assets	7,214
Other noncurrent assets, net	18,257
Accrued expenses		(22,360)
Other long-term liabilities		(365)
Fair Values of Derivative Instruments Asset (Liability) Derivatives	$ 25,471	$ (22,725)