v3.26.3
Goodwill And Intangible Assets (Changes To Intangible Assets) (Detail) - USD ($)
$ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Intangible Asset, Finite-Lived [Roll Forward]    
Balance at beginning of period, net of accumulated amortization $ 149.5 $ 159.9
Additions 542.2 0.0
Amortization expense (47.9) (13.8)
Currency translation and other (8.3) 3.4
Balance at end of period, net of accumulated amortization $ 635.5 $ 149.5