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Earnings per common share (“EPS”) - Schedule of Antidilutive Securities Excluded From Computation of Earnings Per Share (Details) - shares
shares in Millions
6 Months Ended
Jul. 29, 2017
Jul. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive shares excluded from the calculation of earnings per share (shares) 7.0 0.2
Performance Shares    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive shares excluded from the calculation of earnings per share (shares) 0.3 0.2
Preferred shares    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive shares excluded from the calculation of earnings per share (shares) 6.7