Subsequent Events (Details) (USD $)	6 Months Ended
	Jan. 31, 2012	Feb. 01, 2012	Oct. 05, 2006
Subsequent Events (Textual) [Abstract]
Dividend Payable	0.185
Fees for terminating previous credit agreement	0
Line of Credit [Member]
Subsequent Event [Line Items]
Unsecured revolving credit agreement		$ 300,000,000	$ 200,000,000
Base interest rate on credit agreement	Federal funds rate plus one-half of 1% or the prime rate of Bank of America plus a margin based on the Company’s consolidated leverage ratio or LIBOR rate plus a margin based on the Company’s consolidated leverage ratio
Debt to earnings before interest tax depreciation and amortization ratio	3.25
Interest coverage ratio	3.0