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Earnings (Loss) Per Share (EPS) (Reconciliation of Weighted Average Number of Shares Outstanding) (Details)
shares in Millions, $ in Millions
4 Months Ended 11 Months Ended 12 Months Ended
Sep. 28, 2013
Jan. 31, 2014
Jan. 01, 2016
shares
Jan. 02, 2015
shares
Jan. 30, 2015
shares
Jan. 31, 2014
USD ($)
shares
Earnings Per Share [Abstract]            
Basic weighted average number of shares outstanding     73 74 74 83
Dilutive common share equivalents—stock options and other stock awards     1 0 0 0
Diluted weighted average number of shares outstanding     74 74 74 83
Reverse stock split 0.25 0.25        
Antidilutive stock based awards | $           $ 3