Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	May 07, 2011	May 08, 2010
Cash flows from operating activities:
Net income	$ 547,505	$ 469,378
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property and equipment	133,347	129,918
Amortization of debt origination fees	6,060	4,505
Income tax benefit from exercise of stock options	(22,027)	(10,167)
Deferred income taxes	(9,771)	(4,516)
Share-based compensation expense	18,482	13,215
Changes in operating assets and liabilities:
Accounts receivable	(9,872)	5,307
Merchandise inventories	(174,138)	(79,177)
Accounts payable and accrued expenses	277,158	125,622
Income taxes payable	111,823	61,908
Other, net	18,326	25,014
Net cash provided by operating activities	896,893	741,007
Cash flows from investing activities:
Capital expenditures	(200,584)	(180,066)
Purchase of marketable securities	(34,720)	(31,417)
Proceeds from sale of marketable securities	32,087	28,255
Disposal of capital assets	2,299	6,452
Net cash used in investing activities	(200,918)	(176,776)
Cash flows from financing activities:
Net payments of commercial paper	(11,900)	(28,400)
Net proceeds from short-term borrowings	19,690
Proceeds from issuance of debt	500,000
Repayment of debt	(199,300)
Net proceeds from sale of common stock	42,147	28,818
Purchase of treasury stock	(1,033,488)	(558,269)
Income tax benefit from exercise of stock options	22,027	10,167
Payments of capital lease obligations	(16,683)	(13,864)
Other, net	(17,180)
Net cash used in financing activities	(694,687)	(561,548)
Effect of exchange rate changes on cash	799	373
Net increase in cash and cash equivalents	2,087	3,056
Cash and cash equivalents at beginning of period	98,280	92,706
Cash and cash equivalents at end of period	$ 100,367	$ 95,762