Accounts Payable and Other Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Payables and Accruals [Abstract]
Vendor payables	$ 661,948	$ 653,131
Accrued expenses	477,013	397,539
Total accounts payable and other accrued expenses	1,138,961	1,050,670
Unfavorable Regulatory Action \| Claimed Indirect Costs
Loss Contingencies [Line Items]
Provision for claimed indirect costs	$ 374,800	$ 363,700

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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