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Redeemable preferred shares (Tables)
3 Months Ended
May 02, 2020
Temporary Equity [Abstract]  
Redeemable Preferred Shares
(in millions, except conversion rate and conversion price)
May 2, 2020
 
February 1, 2020
 
May 4, 2019
Conversion rate
12.2297

 
12.2297

 
11.5493

Conversion price
$
81.7682

 
$
81.7682

 
$
86.5853

Potential impact of preferred shares if-converted to common shares
7.6

 
7.6

 
7.2

Liquidation preference
$
632.8

 
$
632.8

 
$
632.8