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Stockholders' Equity Exchangeable Shares and Conversion Rights (Details)
12 Months Ended
Dec. 31, 2020
shares
votes
Class B Exchangeable Shares  
Class of Stock [Line Items]  
Common stock, votes per share 1
Exchangeable shares issued, Class A  
Class of Stock [Line Items]  
Common stock, votes per share 1
Common stock, conversion ratio | shares 1