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Segment Reporting (Schedule Of Net Sales And Income From Operations, By Segment) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2011	Jul. 31, 2010
Net sales	$ 609,181	$ 552,159	$ 1,133,200	$ 1,032,120
Total income from operations	87,995	106,869	146,831	189,080
Retail Operations [Member]
Net sales	577,282	522,225	1,070,744	977,035
Total income from operations	88,182	108,174	151,150	192,032
Wholesale Operations [Member]
Net sales	35,194	31,217	66,777	57,186
Total income from operations	7,278	6,704	10,236	11,867
Intersegment Elimination [Member]
Net sales	(3,295)	(1,283)	(4,321)	(2,101)
Total income from operations	(607)	(119)	(678)	(184)
General Corporate Expenses [Member]
General corporate expense	(6,858)	(7,890)	(13,877)	(14,635)
Total Segment Operating Income [Member]
Total income from operations	$ 94,853	$ 114,759	$ 160,708	$ 203,715

X

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Other generally recurring costs associated with normal operations excluding those directly related to the marketing or selling of products and services not otherwise defined.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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Namespace Prefix:	us-gaap
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Balance Type:	debit
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X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 1

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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Period Type:	duration