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Commitments and Contingencies (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Mar. 31, 2022
U.S. Department of Justice          
Loss Contingencies [Line Items]          
Estimate of possible loss $ 124.0   $ 124.0    
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) 97.00% 97.00% 97.00% 97.00%  
Unfavorable Regulatory Action          
Loss Contingencies [Line Items]          
Liability for reductions and/or penalties from U.S Government audits $ 311.6   $ 311.6   $ 290.4
Financial Standby Letter of Credit          
Concentration Risk [Line Items]          
Guarantor obligations, carrying value 6.1   6.1   8.4
Guarantor obligations, reduction to available borrowings     1.0   1.0
Guarantor obligations, facility 20.0   20.0   20.0
Guarantor obligations, available amount $ 14.9   $ 14.9   $ 12.6