Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Shareholders' Deficit - Summary of Changes in Shareholders' Deficit (Parenthetical) (Detail) - USD ($)
shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Equity [Abstract]    
Issuance of common shares 1.3 0.4
Repurchases of common shares 13.4 0.1
Foreign currency translation adjustment, tax $ 1.5 $ (2.5)
Unrealized loss on derivatives, tax $ 0.0 $ (0.3)