Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Deficit - Summary of Changes in Shareholders' Deficit (Detail)

v3.21.1
Shareholders' Deficit - Summary of Changes in Shareholders' Deficit (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Beginning balance $ (856.1) $ (390.0)
Issuance of common shares from exercise of stock options, SARs, restricted stock units, employee stock purchase plan, and other 0.9 0.8
Additional capital from share-based compensation 13.3 10.3
Repurchases of common shares (645.0) (4.7)
Net income 147.4 45.6
Foreign currency translation adjustment, net of income taxes (23.7) (57.1)
Unrealized gain on derivatives, net of income taxes 0.9 6.6
Ending balance (1,362.3) (388.5)
Common Shares [Member]    
Beginning balance 0.1 0.1
Issuance of common shares from exercise of stock options, SARs, restricted stock units, employee stock purchase plan, and other 0.0 0.0
Repurchases of common shares 0.0 0.0
Ending balance 0.1 0.1
Treasury Stock [Member]    
Beginning balance (328.9) (328.9)
Ending balance (328.9) (328.9)
Paid-in Capital in Excess of par Value [Member]    
Beginning balance 342.3 366.6
Issuance of common shares from exercise of stock options, SARs, restricted stock units, employee stock purchase plan, and other 0.9 0.8
Additional capital from share-based compensation 13.3 10.3
Repurchases of common shares (57.8) (4.7)
Ending balance 298.7 373.0
Accumulated Other Comprehensive Loss [Member]    
Beginning balance (182.2) (212.5)
Foreign currency translation adjustment, net of income taxes (23.7) (57.1)
Unrealized gain on derivatives, net of income taxes 0.9 6.6
Ending balance (205.0) (263.0)
Accumulated Deficit [Member]    
Beginning balance (687.4) (215.3)
Repurchases of common shares (587.2)  
Net income 147.4 45.6
Ending balance $ (1,127.2) $ (169.7)