SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $)	3 Months Ended								12 Months Ended
	Feb. 02, 2013 item	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Feb. 02, 2013 item	Jan. 28, 2012	Jan. 29, 2011
GOODWILL
Number of reporting units									6
Number of reporting units which included goodwill									3
Impairment	$ 0									$ 0	$ 0
SOFTWARE CAPITALIZATION
Maximum amortization period									5 years
REVENUE RECOGNITION
Period during which certificates can be redeemed									90 days
legal obligations of unredeemed gift cards to the relevant jurisdictions	0								0
VENDOR SUPPORT FUNDS
Vendor support funds used to offset direct advertising costs										2,500,000
Warranty reserve
Beginning balance				673,000				673,000	673,000	673,000
Additions related to sales in the current year									11,920,000	12,122,000
Warranty costs incurred in the current year									(11,729,000)	(12,122,000)
Ending balance	864,000				673,000				864,000	673,000	673,000
ADVERTISING
Gross advertising expense									63,300,000	54,900,000	57,500,000
Advertising costs recorded as assets	0				0				0	0
ACCOUNTING FOR STOCK BASED COMPENSATION
Number of stock-based employee compensation plans	2								2
SEGMENT INFORMATION
Number of operating segments									6
Number of reportable segments									1
Sales by major product categories
Total revenues	530,847,000	509,608,000	525,671,000	524,604,000	505,318,000	522,173,000	522,594,000	513,540,000	2,090,730,000	2,063,627,000	1,988,641,000
Parts and accessories
Sales by major product categories
Total revenues									1,252,617,000	1,259,500,000	1,261,678,000
Tires
Sales by major product categories
Total revenues									391,331,000	383,257,000	336,490,000
Service labor
Sales by major product categories
Total revenues									$ 446,782,000	$ 420,870,000	$ 390,473,000