XML 134 R87.htm IDEA: XBRL DOCUMENT v3.24.1
Income Taxes - Summary of Total Income Tax (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Tax Disclosure [Abstract]      
Income tax (benefit)/expense allocated to net income $ (132.1) $ (78.1) $ 5.3
Income tax expense/(benefit) allocated to other comprehensive income 20.6 (23.9) 0.3
Total income tax (benefit)/expense $ (111.5) $ (102.0) $ 5.6