v3.20.1
Equity (Details)
$ in Millions
3 Months Ended
Mar. 31, 2020
$ / shares
Mar. 31, 2020
USD ($)
Mar. 31, 2019
$ / shares
Mar. 31, 2019
USD ($)
Increase (decrease) in shareholders' equity        
Balance at the beginning of the period   $ 137.7   $ 192.4
Net (loss) income   23.7   2.4
Share-based compensation   0.4   0.6
Common share repurchases   (8.2)   (0.1)
Preferred share repurchases   (6.4)   (7.7)
Realized and unrealized gain on hedging activities, net of tax   (0.3)   (0.1)
Foreign currency translation adjustments   (11.2)   2.2
Balance at the end of the period   134.0   187.8
Series 1        
Increase (decrease) in shareholders' equity        
Dividends on preferred shares of a subsidiary company   (0.8)   (0.9)
Dividends on preferred shares of a subsidiary company (in CAD per share) | $ / shares $ 0.303125   $ 0.303125  
Series 2        
Increase (decrease) in shareholders' equity        
Dividends on preferred shares of a subsidiary company   (0.6)   (0.6)
Dividends on preferred shares of a subsidiary company (in CAD per share) | $ / shares 0.358688   0.348125  
Series 3        
Increase (decrease) in shareholders' equity        
Dividends on preferred shares of a subsidiary company   (0.3)   (0.4)
Dividends on preferred shares of a subsidiary company (in CAD per share) | $ / shares $ 0.363342   $ 0.362893  
Common Shares        
Increase (decrease) in shareholders' equity        
Balance at the beginning of the period   1,259.9   1,260.9
Share-based compensation   0.4   0.6
Common share repurchases   (8.2)   (0.1)
Balance at the end of the period   1,252.1   1,261.4
Retained Deficit        
Increase (decrease) in shareholders' equity        
Balance at the beginning of the period   (1,164.2)   (1,121.6)
Net (loss) income   29.5   8.9
Balance at the end of the period   (1,134.7)   (1,112.7)
Accumulated Other Comprehensive (Loss) Income        
Increase (decrease) in shareholders' equity        
Balance at the beginning of the period   (140.7)   (146.2)
Realized and unrealized gain on hedging activities, net of tax   (0.3)   (0.1)
Foreign currency translation adjustments   (11.2)   2.2
Balance at the end of the period   (152.2)   (144.1)
Preferred Shares of a Subsidiary Company        
Increase (decrease) in shareholders' equity        
Balance at the beginning of the period   182.7   199.3
Net (loss) income   (5.8)   (6.5)
Preferred share repurchases   (6.4)   (7.7)
Balance at the end of the period   168.8   183.2
Preferred Shares of a Subsidiary Company | Series 1        
Increase (decrease) in shareholders' equity        
Dividends on preferred shares of a subsidiary company   (0.8)   (0.9)
Preferred Shares of a Subsidiary Company | Series 2        
Increase (decrease) in shareholders' equity        
Dividends on preferred shares of a subsidiary company   (0.6)   (0.6)
Preferred Shares of a Subsidiary Company | Series 3        
Increase (decrease) in shareholders' equity        
Dividends on preferred shares of a subsidiary company   $ (0.3)   $ (0.4)