v3.26.1
SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Mortgage Securitizations (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Mortgage securitizations - U.S. agency sponsored          
Cash Flows Between Transferor and Transferee          
Principal securitized $ 1,300.0 $ 1,800.0 $ 2,700.0 $ 3,400.0  
Proceeds from new securitizations 1,300.0 1,800.0 2,700.0 3,500.0  
Contractual servicing fees received 0.0 0.0 100.0 100.0  
Cash flows received on retained interests and other net cash flows 0.0 0.0 0.0 0.0  
Purchases of previously transferred financial assets 0.0 0.0 0.0 0.0  
Gains recognized on the securitization 0.6 1.0 1.3 1.0  
Carrying value of retained interests 843.0   843.0   $ 810.0
Mortgage securitizations - Non-agency-sponsored          
Cash Flows Between Transferor and Transferee          
Principal securitized 3,700.0 1,400.0 8,700.0 2,800.0  
Proceeds from new securitizations 3,600.0 1,000.0 8,400.0 2,300.0  
Contractual servicing fees received 0.0 0.0 0.0 0.0  
Cash flows received on retained interests and other net cash flows 100.0 0.0 100.0 100.0  
Purchases of previously transferred financial assets 0.0 0.0 0.0 0.0  
Gains recognized on the securitization 78.7 $ 34.7 139.4 $ 95.5  
Senior interests          
Cash Flows Between Transferor and Transferee          
Carrying value of retained interests 907.0   907.0   879.0
Subordinated interests          
Cash Flows Between Transferor and Transferee          
Carrying value of retained interests $ 1,089.0   $ 1,089.0   $ 1,079.0