Notes, Loans and Finance Leases Payable, net (Long-term Debt Borrowings) (Parenthetical) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Mar. 31, 2024
Debt instrument, maturities:
Debt Instrument Carrying Amount	$ 6,444,590	$ 5,850,346
Participating Mortgages [Member]
Debt instruments, interest rate, effective percentage:
Weighted average interest rate	4.10%	4.10%
Participating Mortgages [Member] \| Minimum [Member]
Debt instruments, interest rate, effective percentage:
Investment Interest Rate	2.72%	2.72%
Participating Mortgages [Member] \| Maximum [Member]
Debt instruments, interest rate, effective percentage:
Investment Interest Rate	2.86%	2.86%
Equipment Trust Certificate [Member]
Debt instruments, interest rate, effective percentage:
Weighted average interest rate	5.82%	5.82%
Equipment Trust Certificate [Member] \| Minimum [Member]
Debt instruments, interest rate, effective percentage:
Investment Interest Rate	4.36%	4.36%
Equipment Trust Certificate [Member] \| Maximum [Member]
Debt instruments, interest rate, effective percentage:
Investment Interest Rate	4.71%	4.71%

Rate of interest on investment.

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+ Details