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SIGNIFICANT ACCOUNTING POLICIES (Details 8) - USD ($)
shares in Thousands, $ in Millions
 3 Months Ended 12 Months Ended
Jul. 30, 2016
Apr. 30, 2016
Jan. 30, 2016
Oct. 31, 2015
Aug. 01, 2015
May 02, 2015
Jan. 31, 2015
Nov. 01, 2014
Jul. 30, 2016
Aug. 01, 2015
Aug. 02, 2014
Earnings Per Share                      
Basic weighted average shares outstanding 50,381 50,350 50,326 50,194 50,091 50,079 50,025 49,889 50,313 50,021 49,602
Net effect of dilutive common stock equivalents based upon the treasury stock method                 86 246 286
Diluted weighted average shares outstanding 50,516 50,379 50,388 50,313 50,330 50,348 50,277 50,113 50,399 50,267 49,888
Potential anti-dilutive share-based payment awards excluded from the computation above                 84 7 6
Shipping and Handling Fees and Costs                      
Outbound shipping and handling costs, excluding employee benefit expenses                 $ 467.5 $ 452.9 $ 397.7