Quarterly report [Sections 13 or 15(d)]

Shareholders' Deficit - Summary of Changes in Accumulated Other Comprehensive Loss (Detail)

v3.26.3
Shareholders' Deficit - Summary of Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     $ (515.1)  
Total other comprehensive (loss) income $ (2.9) $ (5.0) (16.7) $ 19.8
Ending balance (409.6)   (409.6)  
Foreign Currency Translation Adjustments [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (260.2) (249.4) (248.2) (282.3)
Other comprehensive (loss) income before reclassifications, net of tax (7.7) (0.7) (19.7) 32.2
Amounts reclassified from accumulated other comprehensive loss to income, net of tax 0.0 [1] 0.0 [1] 0.0 [2] 0.0 [2]
Total other comprehensive (loss) income (7.7) (0.7) (19.7) 32.2
Ending balance (267.9) (250.1) (267.9) (250.1)
Unrealized (Loss) Gain on Derivatives [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (5.1) 2.8 (3.3) 10.9
Other comprehensive (loss) income before reclassifications, net of tax 3.0 (2.2) (1.9) (3.5)
Amounts reclassified from accumulated other comprehensive loss to income, net of tax 1.8 [1] (2.1) [1] 4.9 [2] (8.9) [2]
Total other comprehensive (loss) income 4.8 (4.3) 3.0 (12.4)
Ending balance (0.3) (1.5) (0.3) (1.5)
Accumulated Other Comprehensive Loss [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (265.3) (246.6) (251.5) (271.4)
Other comprehensive (loss) income before reclassifications, net of tax (4.7) (2.9) (21.6) 28.7
Amounts reclassified from accumulated other comprehensive loss to income, net of tax 1.8 [1] (2.1) [1] 4.9 [2] (8.9) [2]
Total other comprehensive (loss) income (2.9) (5.0) (16.7) 19.8
Ending balance $ (268.2) $ (251.6) $ (268.2) $ (251.6)
[1] See Note 9, Derivative Instruments and Hedging Activities, for information regarding the location within the condensed consolidated statements of income of gains (losses) reclassified from accumulated other comprehensive loss to income during the three months ended September 30, 2026 and 2025.
[2] See Note 9, Derivative Instruments and Hedging Activities, for information regarding the location within the condensed consolidated statements of income of gains (losses) reclassified from accumulated other comprehensive loss to income during the nine months ended September 30, 2026 and 2025.