Leases (Components Of Lease Expense) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lease cost:
Operating lease costs	$ 24,018	$ 22,564
Cash Flow Financing Activities Lessee [Abstract]
Amortization of right of use assets	90,056	116,002
Interest on lease liabilities	14,290	17,448
Total finance lease cost	$ 104,346	$ 133,450