Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Shareholders' Deficit - Summary of Changes in Shareholders' Deficit (Parenthetical) (Detail) - USD ($)
shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Equity [Abstract]    
Issuance of common shares 0.4 0.4
Repurchases of common shares 0.1 0.1
Foreign currency translation adjustment, tax $ (2.5) $ 0.5
Unrealized loss on derivatives, tax $ (0.3)  
Forward Counterparties' delivery of common shares to the Company   2.0