v3.26.1
Income Taxes (Schedule of Change in Deferred Income Tax Liabilities) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Balance, beginning of year $ 748.4 $ 694.6
Deferred income tax expense recognized in net earnings 83.4 119.2
Deferred income tax expense (recovery) recognized in OCI 6.9 (3.8)
Deferred tax asset 0.0 (61.2)
Other 0.6 (0.4)
Balance, end of year $ 839.3 $ 748.4