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v3.23.3

Commitments and Contingencies (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jul. 21, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Mar. 31, 2023
Concentration Risk [Line Items] |  |  |  |  |  |  |
Operating income (loss) |  | $ 266,989 |  | $ 223,921 | $ 501,407 | $ 431,116 |
Net income |  | $ 170,718 |  | $ 170,932 | $ 332,106 | $ 309,216 |
Basic (in dollars per share) |  | $ 1.29 |  | $ 1.28 | $ 2.52 | $ 2.32 |
Diluted (in dollars per share) |  | $ 1.29 |  | $ 1.28 | $ 2.51 | $ 2.31 |
Claimed Indirect Costs |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Loss contingency accrual, period increase (decrease) |  | $ 18,300 |  |  |  |  |
Claimed Indirect Costs | Revision of Prior Period, Adjustment |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Operating income (loss) |  | 18,300 |  |  | $ 18,300 |  |
Net income |  | $ 13,500 |  |  | $ 13,500 |  |
Basic (in dollars per share) |  | $ 0.10 |  |  | $ 0.10 |  |
Diluted (in dollars per share) |  | $ 0.10 |  |  | $ 0.10 |  |
U.S. Department of Justice |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Estimate of possible loss |  |  | $ 377,500 |  |  |  | $ 350,000
U.S. Department of Justice | Minimum |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Estimate of possible loss |  |  | 350,000 |  |  |  |
U.S. Department of Justice | Maximum |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Estimate of possible loss |  |  | 378,000 |  |  |  |
Unfavorable Regulatory Action | Claimed Indirect Costs |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Liability for reductions and/or penalties from U.S Government audits |  | $ 328,900 |  |  | $ 328,900 |  | 326,700
Unfavorable Regulatory Action | U.S. Department of Justice |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Amount awarded to other party | $ 377,500 |  |  |  |  |  |
Contracts with U.S. Government Agencies or Other U.S. Government Contractors | Revenue Benchmark | Total U.S. government |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration risk (as a percent) |  | 99.00% |  | 97.00% | 98.00% | 97.00% |
Financial Standby Letter of Credit |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Guarantor obligations, carrying value |  | $ 4,400 |  |  | $ 4,400 |  | 6,100
Guarantor obligations, reduction to available borrowings |  |  | $ 1,300 |  | 1,300 |  |
Guarantor obligations, facility |  | 7,500 |  |  | 7,500 |  | 7,500
Guarantor obligations, available amount |  | $ 4,400 |  |  | $ 4,400 |  | $ 2,700

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