v3.26.3
Shareholders' Deficit - Summary of Changes in Shareholders' Deficit (Parenthetical) (Detail) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Issuance of common shares   0.4 2.1 3.2
Repurchases of common shares   0.3 0.6 1.2
Foreign currency translation adjustment, tax $ (1.5) $ (0.1) $ (1.0) $ 0.5
Unrealized gain on derivatives, tax $ 0.0 $ 0.0 $ 0.0 $ 0.0
Maximum [Member]        
Issuance of common shares 0.1      
Repurchases of common shares 0.1