v3.26.1
Goodwill And Intangible Assets (Changes To Intangible Assets) (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Intangible Asset, Finite-Lived [Roll Forward]    
Balance at beginning of period, net of accumulated amortization $ 149.5 $ 159.9
Additions 539.2 0.0
Amortization expense (15.9) (13.8)
Currency translation and other (5.5) 3.4
Balance at end of period, net of accumulated amortization $ 667.3 $ 149.5