EQUITY PLANS (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended								12 Months Ended
	Aug. 02, 2014	Aug. 03, 2013	Jul. 28, 2012	Aug. 02, 2014 Stock Incentive Plan 1996	Aug. 02, 2014 Stock Incentive Plan 2002	Aug. 02, 2014 Equity Incentive Plan 2004 installment	Dec. 16, 2010 Equity Incentive Plan 2004	Aug. 02, 2014 Equity Incentive Plan 2012	Aug. 02, 2014 Performance-based share awards	Aug. 03, 2013 Performance-based share awards	Jul. 28, 2012 Performance-based share awards	Aug. 02, 2014 Stock options Plan	Aug. 03, 2013 Stock options	Jul. 28, 2012 Stock options
Equity plans
Share-based compensation expense	$ 14.6	$ 15.1	$ 11.4						$ 1.0	$ 3.3	$ 2.1
Long term incentive plan term	2 years
Unrecognized compensation cost	$ 26.5
Estimated weighted-average period for unrecognized compensation cost (in years)	2 years 6 months
Number of stock option plans												4
Graded vesting period for employees												4 years
Graded vesting period for non-employee directors												2 years
Portion vested on grant						0.3333						0.3333
Maximum term of options granted				10 years	10 years	10 years
Shares authorized for grant under the plans				9,050,000	9,050,000	2,500,000		9,050,000
Number of shares available for grant						349,648	1,054,267	878,794
Number of equal annual installments in which awards are vested for employees (in installments)						4
Number of equal annual installments in which awards are vested for non-employee directors						3
Weighted average assumptions
Expected volatility												28.50%	29.80%	39.30%
Dividend yield												0.00%	0.00%	0.00%
Risk free interest rate												1.20%	0.30%	0.40%
Expected term (in years)												3 years	3 years	3 years