Borrowings (Long-term Debt Borrowings) (Parenthetical) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Debt instrument, maturities:
Debt Instrument Carrying Amount	$ 5,850,346	$ 5,710,735
Real estate loan (amortizing term) [Member]
Debt instruments, interest rate, effective percentage:
Weighted average interest rate	5.90%
Debt instrument, maturities:
Debt Instrument Carrying Amount	$ 277,767	$ 289,647
Real estate loan (amortizing term) [Member] | Minimum [Member] | Interest Rate Swaps [Member]
Debt instruments, interest rate, effective percentage:
Interest rate	2.72%	2.72%
Real estate loan (amortizing term) [Member] | Maximum [Member] | Interest Rate Swaps [Member]
Debt instruments, interest rate, effective percentage:
Interest rate	2.86%	2.86%
Fleet Loans Revolving Credit [Member]
Debt instruments, interest rate, effective percentage:
Weighted average interest rate	6.45%
Debt instrument, maturities:
Debt Instrument Carrying Amount	$ 573,889	$ 615,000
Fleet Loans Revolving Credit [Member] | Interest Rate Swaps [Member]
Debt instruments, interest rate, effective percentage:
Interest rate	4.71%	4.71%
Weighted average interest rate	6.34%	6.34%
Debt instrument, maturities:
Debt Instrument Carrying Amount	$ 100,000	$ 100,000