v3.26.3
Contract Revenues (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Service Contracts And Sales          
Disaggregation of Revenue [Line Items]          
Receivables from contracts with customers $ 201.7   $ 201.7   $ 187.6
Unearned revenue from contracts with customers 154.8   154.8   149.1
Contract with customer, liability, unearned revenue 19.0 $ 17.5 56.8 $ 52.4  
Deferred upfront commissions and other costs 60.3   60.3   $ 67.6
Global Lifestyle          
Disaggregation of Revenue [Line Items]          
Disaggregated fee revenues 512.6 419.6 1,440.0 1,170.0  
Global Housing          
Disaggregation of Revenue [Line Items]          
Disaggregated fee revenues $ 38.7 $ 40.3 $ 107.7 $ 107.3