Earnings/(Loss) per Share (Tables)
 12 Months Ended
Jan. 31, 2015
Earnings Per Share [Abstract]  
Earnings/(Loss) per Share
Net income/(loss) and shares used to compute basic and diluted EPS are reconciled below:
(in millions, except per share data)
 
2014
 
2013
 
2012
Earnings/(loss)
 
 

 
 

 
 

Net income/(loss)
 
$
(771
)
 
$
(1,388
)
 
$
(985
)
Shares
 
 
 
 
 
 
Weighted average common shares outstanding (basic shares)
 
305.2

 
249.3

 
219.2

Adjustment for assumed dilution:
 
 
 
 
 
 
Stock options, restricted stock awards and warrant
 
—

 
—

 
—

Weighted average shares assuming dilution (diluted shares)
 
305.2

 
249.3

 
219.2

EPS
 
 
 
 
 
 
Basic
 
$
(2.53
)
 
$
(5.57
)
 
$
(4.49
)
Diluted
 
$
(2.53
)
 
$
(5.57
)
 
$
(4.49
)
Antidilutive common stock
The following average potential shares of common stock were excluded from the diluted EPS calculation because their effect would have been anti-dilutive:
(Shares in millions)
 
2014
 
2013
 
2012
Stock options, restricted stock awards and warrant
 
26.8

 
24.3

 
25.0