XML 306 R79.htm IDEA: XBRL DOCUMENT v3.23.2
Municipal Bond Guarantee Insurance - Schedule of Municipal Guarantee Insurance Contracts, Premium Received Over Contract Period (Details) - BAM - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Guarantor Obligations [Line Items]    
July 1, 2023 - December 31, 2023 $ 14.2  
January 1, 2024 - March 31, 2024 6.9  
April 1, 2024 - June 30, 2024 6.9  
July 1, 2024 - September 30, 2024 6.7  
October 1, 2024 - December 31, 2024 6.6  
Total 2024 27.1  
2025 25.4  
2026 23.7  
2027 22.1  
2028 20.4  
2029 and thereafter 170.8  
Total gross unearned insurance premiums $ 303.7 $ 298.3