Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 28, 2012	Apr. 30, 2011
Cash Flows From Operating Activities
Net earnings	$ 208,613	$ 172,973
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	43,136	39,934
Stock-based compensation	11,587	9,894
Deferred income taxes	(339)	9,657
Tax benefit from equity issuance	23,123	10,021
Excess tax benefit from stock-based compensation	(22,662)	(9,727)
Change in assets and liabilities:
Merchandise inventory	(4,633)	(85,799)
Other current assets	(28,890)	(25,392)
Accounts payable	100,177	1,120
Other current liabilities	(33,792)	(80,429)
Other long-term, net	1,010	(1,201)
Net cash provided by operating activities	297,330	41,051
Cash Flows From Investing Activities
Additions to property and equipment	(57,993)	(70,096)
Increase in restricted cash and investments	(13,410)
Purchases of investments	(424)
Proceeds from investments	618	1,814
Net cash used in investing activities	(71,209)	(68,282)
Cash Flows From Financing Activities
Excess tax benefit from stock-based compensation	22,662	9,727
Issuance of common stock related to stock plans	7,955	5,827
Treasury stock purchased	(23,123)	(12,837)
Repurchase of common stock	(110,614)	(112,500)
Dividends paid	(31,719)	(25,905)
Net cash used in financing activities	(134,839)	(135,688)
Net increase (decrease) in cash and cash equivalents	91,282	(162,919)
Cash and cash equivalents:
Beginning of period	649,835	833,924
End of period	741,117	671,005
Supplemental Cash Flow Disclosures
Interest paid
Income taxes paid	30,258	54,705
Non-Cash Investing Activities
Decrease in fair value of investment securities	$ (13)	$ (4)