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Stock Repurchase Programs Schedule of Repurchase Program Activity (Tables)
9 Months Ended
Oct. 31, 2015
Schedule of Share Repurchase Program Activity [Abstract]  
Schedule of Repurchase Agreements [Table Text Block]
The following is a summary of share repurchase activity for the periods indicated (in thousands, except per share data):
 
 
Three Months Ended
 
Nine Months Ended
 
 
October 31,
2015
 
November 1,
2014
 
October 31,
2015
 
November 1,
2014
Cost of shares repurchased
 
$
174,550

 
$
224,486

 
$
382,494

 
$
290,408

Number of shares repurchased
 
1,888

 
2,043

 
3,731

 
2,781

Average price per share
 
$
92.45

 
$
109.89

 
$
102.52

 
$
104.44