Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Investments in Unrealized Loss Position (Details)

v3.23.1
Fair Value Measurements - Investments in Unrealized Loss Position (Details)
$ in Millions
Mar. 31, 2023
USD ($)
security
Dec. 31, 2022
USD ($)
security
Debt securities    
Estimated Fair Value    
Securities with a loss shorter than 12 months $ 2.0 $ 4.0
Securities with a loss longer than 12 months 8.0 6.0
Unrealized Losses    
Securities with a loss shorter than 12 months 0.4 0.7
Securities with a loss longer than 12 months $ 1.3 $ 1.2
Count of Securities    
Securities with a loss shorter than 12 months | security 2,000,000 4
Securities with a loss longer than 12 months | security 3,000,000 1
Securitization residual assets    
Estimated Fair Value    
Securities with a loss shorter than 12 months $ 71.0 $ 118.0
Securities with a loss longer than 12 months 99.0 51.0
Unrealized Losses    
Securities with a loss shorter than 12 months 11.0 27.0
Securities with a loss longer than 12 months $ 30.0 $ 22.0
Count of Securities    
Securities with a loss shorter than 12 months | security 40 66
Securities with a loss longer than 12 months | security 30 12