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Accounts Payable and Other Accrued Expenses (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Mar. 31, 2022
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Payables and Accruals [Abstract] |  |
Vendor payables | $ 482,245 | $ 539,524
Accrued expenses | 504,335 | 363,092
Total accounts payable and other accrued expenses | 986,580 | 902,616
U.S. Department of Justice |  |
Loss Contingencies [Line Items] |  |
Estimate of possible loss | 124,000 |
Unfavorable Regulatory Action |  |
Loss Contingencies [Line Items] |  |
Provision for claimed indirect costs | $ 311,600 | $ 290,400

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