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Net Income (Loss) Per Common Share - Potentially Dilutive Securities (Details) - shares
shares in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Stock options and RSUs        
Antidilutive Securities        
Potentially dilutive securities excluded from diluted net loss per common share 2.0 1.2 0.6 1.9