v3.22.2.2
Commitments and Contingencies (Detail) - USD ($)
$ in Millions
Mar. 26, 2021
Sep. 30, 2022
Reinsurance Retention Policy [Line Items]    
Term of reinsurance agreement 3 years  
Reinsurance Contracts: 2023-01-01    
Reinsurance Retention Policy [Line Items]    
Reinsurance payable, due in fiscal year   $ 105.6
Reinsurance Contracts: 2024-01-01    
Reinsurance Retention Policy [Line Items]    
Reinsurance payable, due in second year   157.5
Reinsurance Contracts: 2025-01-01    
Reinsurance Retention Policy [Line Items]    
Reinsurance payable, due in third year   $ 66.3