Quarterly report pursuant to Section 13 or 15(d)

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

v3.24.3
Shareholders' Deficit - Summary of Changes in Shareholders' Deficit (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Beginning balance $ (1,037.2) $ (1,150.4) $ (1,060.3) $ (1,265.9)
Issuance of common shares from exercise of SARs, restricted stock units, employee stock purchase plan, and other 0.6 0.8 2.1 2.3
Additional capital from share-based compensation 13.0 13.7 36.7 35.7
Repurchases of common shares 0.0 (0.3) (5.7) (9.7)
Net income 47.4 42.8 76.4 132.0
Foreign currency translation adjustment, net of income taxes 13.0 (15.5) (18.5) (0.7)
Unrealized gain/loss on derivatives, net of income taxes 9.0 0.4 15.1 (2.2)
Other   5.0   5.0
Ending balance (954.2) (1,103.5) (954.2) (1,103.5)
Common Shares [Member]        
Beginning balance 0.1 0.1 0.1 0.1
Issuance of common shares from exercise of SARs, restricted stock units, employee stock purchase plan, and other 0.0 0.0 0.0 0.0
Repurchases of common shares 0.0 0.0 0.0 0.0
Ending balance 0.1 0.1 0.1 0.1
Paid-in Capital in Excess of par Value [Member]        
Beginning balance 253.4 202.8 233.9 188.7
Issuance of common shares from exercise of SARs, restricted stock units, employee stock purchase plan, and other 0.6 0.8 2.1 2.3
Additional capital from share-based compensation 13.0 13.7 36.7 35.7
Repurchases of common shares   (0.3) (5.7) (9.7)
Other   5.0   5.0
Ending balance 267.0 222.0 267.0 222.0
Accumulated Other Comprehensive Loss [Member]        
Beginning balance (257.4) (238.0) (232.0) (250.2)
Foreign currency translation adjustment, net of income taxes 13.0 (15.5) (18.5) (0.7)
Unrealized gain/loss on derivatives, net of income taxes 9.0 0.4 15.1 (2.2)
Ending balance (235.4) (253.1) (235.4) (253.1)
Accumulated Deficit [Member]        
Beginning balance (1,033.3) (1,115.3) (1,062.3) (1,204.5)
Repurchases of common shares 0.0 0.0 0.0 0.0
Net income 47.4 42.8 76.4 132.0
Ending balance $ (985.9) $ (1,072.5) $ (985.9) $ (1,072.5)