Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jan. 29, 2012	Jan. 30, 2011
Cash flows from operating activities:
Net earnings	$ 464	$ 518
Adjustments to reconcile net earnings to operating cash flow
Restructuring charges	5	0
Stock-based compensation	45	46
Depreciation and amortization	124	129
Deferred income taxes	46	77
Other, net	60	54
Changes in working capital
Accounts receivable	(140)	(186)
Inventories	6	32
Prepaid assets	0	9
Accounts payable and accrued liabilities	(45)	(39)
Pension fund contributions	(63)	(135)
Receipts from (payments of) hedging activities	(3)	1
Other	(21)	(23)
Net cash provided by operating activities	478	483
Cash flows from investing activities:
Purchases of plant assets	(97)	(74)
Sales of plant assets	1	9
Other, net	1	0
Net cash used in investing activities	(95)	(65)
Cash flows from financing activities:
Net short-term borrowings (repayments)	(191)	351
Dividends paid	(188)	(188)
Treasury stock purchases	(173)	(573)
Payments for Repurchase of Common Stock	173	573
Treasury stock issuances	23	38
Excess tax benefits on stock-based compensation	0	6
Net cash used in financing activities	(529)	(366)
Effect of exchange rate changes on cash	(16)	19
Net change in cash and cash equivalents	(162)	71
Cash and cash equivalents - beginning of period	484	254
Cash and cash equivalents - end of period	$ 322	$ 325