Annual report pursuant to Section 13 and 15(d)

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

v3.20.4
Shareholders' Deficit - Summary of Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance $ (390.0) $ (723.4) $ (334.7)
Other comprehensive (loss) before reclassifications, net of tax 34.9 (1.9) (44.6)
Amounts reclassified from accumulated other comprehensive loss to income, net of tax(1) [1] (4.6) (0.8) 0.2
Total other comprehensive income (loss) 30.3 (2.7) (44.4)
Ending balance (856.1) (390.0) (723.4)
Foreign Currency Translation Adjustments [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (211.6) (211.6) (170.6)
Other comprehensive (loss) before reclassifications, net of tax 33.2   (41.0)
Total other comprehensive income (loss) 33.2   (41.0)
Ending balance (178.4) (211.6) (211.6)
Unrealized Gain (Loss) on Derivatives [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (0.9) 1.8 5.2
Other comprehensive (loss) before reclassifications, net of tax 1.7 (1.9) (3.6)
Amounts reclassified from accumulated other comprehensive loss to income, net of tax(1) [1] (4.6) (0.8) 0.2
Total other comprehensive income (loss) (2.9) (2.7) (3.4)
Ending balance (3.8) (0.9) 1.8
Accumulated Other Comprehensive Loss [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (212.5) (209.8) (165.4)
Ending balance $ (182.2) $ (212.5) $ (209.8)
[1] See Note 2, Basis of Presentation, and Note 11, Derivative Instruments and Hedging Activities, for information regarding the location in the consolidated statements of income of gains (losses) reclassified from accumulated other comprehensive loss to income during the years ended December 31, 2020, 2019, and 2018.