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Accounts Payable and Other Accrued Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023
Payables and Accruals [Abstract]
Vendor payables		$ 653,131		$ 597,808
Accrued expenses		397,539		718,832
Total accounts payable and other accrued expenses		1,050,670		1,316,640
U.S. Department of Justice
Loss Contingencies [Line Items]
Estimate of possible loss			$ 377,500	350,000
Payments for legal settlements	$ 350,000
Unfavorable Regulatory Action \| Claimed Indirect Costs
Loss Contingencies [Line Items]
Provision for claimed indirect costs		$ 363,700		$ 326,700