Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Shareholders' Deficit (Parenthetical)

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Consolidated Statements of Changes in Shareholders' Deficit (Parenthetical) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Statement Of Stockholders Equity [Abstract]      
Issuance of common shares 1.7 1.7 1.0
Repurchases of common shares 21.0 19.0 0.4
Foreign currency translation adjustment, tax $ 0.2 $ (2.0) $ 0.1
Unrealized Gain (loss) on derivatives, tax $ 0.0 $ (0.4) $ 0.0
Forward Counterparties' delivery of common shares to the Company     6.0