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Segment Information - Additional Information (Details)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 31, 2015
USD ($)
Nov. 01, 2014
USD ($)
Oct. 31, 2015
USD ($)
Segment
Nov. 01, 2014
USD ($)
Segment Reporting [Abstract]        
Net sales | $ $ 3,857 $ 3,972 $ 11,412 $ 11,727
Number of reportable segments (in segments)     1