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Inventories (Notes)
12 Months Ended
Jan. 31, 2015
Inventory Disclosure [Abstract]  
Inventories
INVENTORIES
 
January 31,
 
(in thousands)
2015

 
2014

Finished goods
          $
1,386,823

 
          $
1,333,926

Raw materials
866,934

 
874,799

Work-in-process
108,355

 
117,855

Inventories, net
          $
2,362,112

 
          $
2,326,580