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Contingencies (Details)
$ in Millions, $ in Millions, $ in Millions
1 Months Ended 12 Months Ended 13 Months Ended
Feb. 04, 2022
USD ($)
Dec. 21, 2021
USD ($)
Dec. 21, 2021
CAD ($)
Dec. 21, 2021
MXN ($)
Sep. 14, 2021
USD ($)
Sep. 14, 2021
CAD ($)
Dec. 31, 2020
USD ($)
Aug. 31, 2020
USD ($)
Aug. 31, 2020
CAD ($)
Oct. 31, 2019
USD ($)
Oct. 31, 2019
CAD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2021
CAD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CAD ($)
Feb. 04, 2022
CAD ($)
Dec. 31, 2021
CAD ($)
Dec. 21, 2021
CAD ($)
Sep. 14, 2021
CAD ($)
Dec. 31, 2020
CAD ($)
Aug. 31, 2020
CAD ($)
Dec. 31, 2019
CAD ($)
Oct. 31, 2019
CAD ($)
Contingencies                                                
Income taxes paid                       $ 93.5   $ 51.2                    
Canada Revenue Agency Reassessment Action | Reassessment for the 2014 and 2015 taxation years | Canada                                                
Contingencies                                                
Provincial income taxes assessed         $ 7.9 $ 10.0       $ 1.1 $ 1.4                          
Percentage of security deposit for notice of objection against reassessment         50.00%         50.00%                   50.00%       50.00%
Canada Revenue Agency Reassessment Action | Reassessment for the 2014 and 2015 taxation years | Barbados                                                
Contingencies                                                
Provincial income taxes assessed                       $ 5.3 $ 6.7                      
Percentage of security deposit for notice of objection against reassessment             50.00%         50.00%   50.00%       50.00%     50.00%      
Canada Revenue Agency Reassessment Action | Tax Year 2014 Through 2016 | Canada                                                
Contingencies                                                
Provincial income taxes assessed                       $ 9.0 11.4                      
Canada Revenue Agency Reassessment Action | Tax Year 2013 Through 2015 | Mexico                                                
Contingencies                                                
Provincial income taxes assessed                             $ 20.0 $ 25.3                
Tax rate (as a percent)             50.00%                                  
Percentage of security deposit for notice of objection against reassessment                             50.00%               50.00%  
Canada Revenue Agency Reassessment Action | Reassessment for the 2012 and 2013 | Barbados                                                
Contingencies                                                
Provincial income taxes assessed               $ 6.0 $ 7.7                              
Percentage of security deposit for notice of objection against reassessment               50.00%                           50.00%    
Canada Revenue Agency Reassessment Action | Tax Year 2016 Through 2017 | Mexico                                                
Contingencies                                                
Provincial income taxes assessed   $ 3.6 $ 4.6                                          
Percentage of security deposit for notice of objection against reassessment   50.00%                                 50.00%          
Canada Revenue Agency Reassessment Action | Tax Year 2016 Through 2017 | Barbados                                                
Contingencies                                                
Provincial income taxes assessed                       $ 31.1 39.5                      
Percentage of security deposit for notice of objection against reassessment                       50.00%           50.00%            
Canada Revenue Agency Reassessment Action | Tax Year 2013 Through 2016 | Mexico                                                
Contingencies                                                
Provincial income taxes assessed   $ 34.1   $ 490.3               $ 23.6 29.9                      
Tax rate (as a percent)   30.00% 30.00% 30.00%                                        
Canada Revenue Agency Reassessment Action | Tax year 2017 through 2021 | Canada                                                
Contingencies                                                
Proposed increase in taxable income $ 26.5       $ 6.7                                      
Provincial income taxes assessed           $ 8.4           41.5 52.6                      
Canada Revenue Agency Reassessment Action | TaxYear 2018 Through 2021 | Barbados                                                
Contingencies                                                
Provincial income taxes assessed                       169.4 214.7                      
Canada Revenue Agency Reassessment Action | Tax year 2014 through 2017 | Barbados                                                
Contingencies                                                
Provincial income taxes assessed                       36.4 $ 46.2                      
Canada Revenue Agency Transfer Pricing Contingent Penalty | Reassessment for the 2014 and 2015 taxation years | Barbados                                                
Contingencies                                                
Contingent liability recorded             $ 2.0         2.0   $ 2.0       $ 2.5     $ 2.5      
Canada Revenue Agency Transfer Pricing Contingent Penalty | Reassessment for the 2013 and 2014 and 2015 taxation years | Mexico                                                
Contingencies                                                
Contingent liability recorded                       8.1           10.3            
Canada Revenue Agency Transfer Pricing Contingent Penalty | Tax Year 2016 | Mexico                                                
Contingencies                                                
Contingent liability recorded                       1.4           1.7            
Canada Revenue Agency Transfer Pricing Contingent Penalty | Tax Year 2013 Through 2015 | Mexico                                                
Contingencies                                                
Contingent liability recorded             $ 8.1             $ 8.1             $ 10.3      
Canada Revenue Agency Transfer Pricing Contingent Penalty | Tax Year 2016 Through 2017 | Mexico                                                
Contingencies                                                
Contingent liability recorded   $ 1.4                                 $ 1.7          
Canada Revenue Agency Transfer Pricing Contingent Penalty | Tax Year 2016 Through 2017 | Barbados                                                
Contingencies                                                
Contingent liability recorded                       11.9           15.1            
Canada Revenue Agency Transfer Pricing Contingent Penalty | TaxYear 2018 Through 2021 | Canada                                                
Contingencies                                                
Contingent liability recorded         34.8                             $ 44.2        
Canada Revenue Agency Transfer Pricing Contingent Penalty | TaxYear 2018 Through 2021 | Barbados                                                
Contingencies                                                
Contingent liability recorded                       63.9           81.0            
Canada Revenue Agency interest and other penalties | Reassessment for the 2014 and 2015 taxation years | Canada                                                
Contingencies                                                
Contingent liability recorded         2.2         $ 0.2                   2.7       $ 0.2
Canada Revenue Agency interest and other penalties | Reassessment for the 2014 and 2015 taxation years | Barbados                                                
Contingencies                                                
Contingent liability recorded                       2.2           2.8            
Canada Revenue Agency interest and other penalties | Tax Year 2014 Through 2016 | Canada                                                
Contingencies                                                
Contingent liability recorded                       2.4           2.9            
Canada Revenue Agency interest and other penalties | Tax Year 2013 Through 2015 | Mexico                                                
Contingencies                                                
Contingent liability recorded                             $ 9.1               $ 11.5  
Canada Revenue Agency interest and other penalties | Reassessment for the 2012 and 2013 | Barbados                                                
Contingencies                                                
Contingent liability recorded               $ 2.8                           $ 3.7    
Canada Revenue Agency interest and other penalties | Tax Year 2016 Through 2017 | Mexico                                                
Contingencies                                                
Contingent liability recorded   $ 1.1                                 $ 1.3          
Canada Revenue Agency interest and other penalties | Tax Year 2016 Through 2017 | Barbados                                                
Contingencies                                                
Contingent liability recorded                       8.2           10.4            
Canada Revenue Agency interest and other penalties | Tax Year 2013 Through 2016 | Mexico                                                
Contingencies                                                
Contingent liability recorded                       10.2           12.8            
Canada Revenue Agency interest and other penalties | Tax year 2017 through 2021 | Canada                                                
Contingencies                                                
Contingent liability recorded $ 6.7                     4.2         $ 8.4 5.4            
Canada Revenue Agency interest and other penalties | TaxYear 2018 Through 2021 | Canada                                                
Contingencies                                                
Contingent liability recorded         $ 4.2                             $ 5.4        
Canada Revenue Agency interest and other penalties | TaxYear 2018 Through 2021 | Barbados                                                
Contingencies                                                
Contingent liability recorded                       12.1           15.4            
Canada Revenue Agency interest and other penalties | Tax year 2014 through 2017 | Barbados                                                
Contingencies                                                
Contingent liability recorded                       $ 10.4           $ 13.2