v3.26.1
Segment Information - Segment Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information [Line Items]    
Revenues $ 261 $ 345
Segment loss and loss adjustment expense (LAE) (benefit) 17 40
Interest accrual 7 0
Employee compensation and benefit expenses 63 60
Segment amortization of deferred acquisition costs 5 5
Segment expenses 227 169
Segment equity in earnings (losses) of investees 31 53
Less: Provision (benefit) for income taxes (20) 44
Net investment income 92 87
Intersegment Eliminations    
Segment Reporting Information [Line Items]    
Revenues (24) 16
Segment expenses (2) (2)
Segment equity in earnings (losses) of investees (2) (6)
Less: Provision (benefit) for income taxes (5) 1
Operating Segments    
Segment Reporting Information [Line Items]    
Revenues 310 245
Segment expenses 186 68
Segment equity in earnings (losses) of investees 14 43
Less: Provision (benefit) for income taxes (8) 40
Financial Guaranty | Operating Segments Excluding Intersegment Elimination    
Segment Reporting Information [Line Items]    
Revenues 180 237
Financial Guaranty | Intersegment Eliminations    
Segment Reporting Information [Line Items]    
Revenues 2 2
Financial Guaranty | Operating Segments    
Segment Reporting Information [Line Items]    
Revenues 182 239
Segment loss and loss adjustment expense (LAE) (benefit) 17 (23)
Interest accrual 0 0
Employee compensation and benefit expenses 54 52
Segment amortization of deferred acquisition costs 5 5
Other segment items 31 30
Segment expenses 107 64
Segment equity in earnings (losses) of investees 8 30
Less: Provision (benefit) for income taxes (19) 37
Segment adjusted operating income (loss) 102 168
Net investment income 88 86
Non-cash compensation and operating expenses 21 18
Annuity Reinsurance Segment | Operating Segments Excluding Intersegment Elimination    
Segment Reporting Information [Line Items]    
Revenues 10  
Annuity Reinsurance Segment | Intersegment Eliminations    
Segment Reporting Information [Line Items]    
Revenues 0  
Annuity Reinsurance Segment | Operating Segments    
Segment Reporting Information [Line Items]    
Revenues 10  
Segment loss and loss adjustment expense (LAE) (benefit) 0  
Interest accrual 7  
Employee compensation and benefit expenses 2  
Segment amortization of deferred acquisition costs 0  
Other segment items 2  
Segment expenses 11  
Segment equity in earnings (losses) of investees 0  
Less: Provision (benefit) for income taxes (1)  
Segment adjusted operating income (loss) 0  
Net investment income 5  
Non-cash compensation and operating expenses 1  
Asset Management | Operating Segments Excluding Intersegment Elimination    
Segment Reporting Information [Line Items]    
Revenues 94 5
Asset Management | Intersegment Eliminations    
Segment Reporting Information [Line Items]    
Revenues 24 1
Asset Management | Operating Segments    
Segment Reporting Information [Line Items]    
Revenues 118 6
Segment loss and loss adjustment expense (LAE) (benefit) 0 0
Interest accrual 0 0
Employee compensation and benefit expenses 0 0
Segment amortization of deferred acquisition costs 0 0
Other segment items 68 4
Segment expenses 68 4
Segment equity in earnings (losses) of investees 6 13
Less: Provision (benefit) for income taxes 12 3
Segment adjusted operating income (loss) 44 12
Net investment income 0 0
Non-cash compensation and operating expenses $ 0 $ 0