Consolidated Statements of Equity (USD $) In Millions, except Per Share data	Total	Capital Stock Issued [Member]	Capital Stock In Treasury [Member]	Additional Paid-In Capital [Member]	Earnings Retained In The Business [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]
Balance, value at Jul. 31, 2011	$ 1,096	$ 20	$ (8,021)	$ 331	$ 9,185	$ (427)	$ 8
Treasury stock, shares at Jul. 31, 2011			(222)
Capital stock, shares at Jul. 31, 2011		542
Contribution from noncontrolling interest	2						2
Net earnings (loss)	764				774		(10)
Other comprehensive income (loss)	(349)					(349)	0
Dividends	(375)				(375)
Dividends per share	$ 1.16
Treasury stock purchased, shares			(13)
Treasury stock purchased, value	(412)		(412)
Treasury stock issued under management incentive and stock option plans, shares			5
Treasury stock issued under management incentive and stock option plans, value	172		174	(2)
Balance, value at Jul. 29, 2012	898	20	(8,259)	329	9,584	(776)	0
Treasury stock, shares at Jul. 29, 2012			(230)
Capital stock, shares at Jul. 29, 2012		542
Contribution from noncontrolling interest	3						3
Net earnings (loss)	449				458		(9)
Other comprehensive income (loss)	210					211	(1)
Dividends	(371)				(371)
Dividends per share	$ 1.16
Treasury stock purchased, shares			(4)
Treasury stock purchased, value	(153)		(153)
Treasury stock retired, shares	219	(219)	219
Treasury stock retired, value	0	8	7,907		7,899
Treasury stock issued under management incentive and stock option plans, shares			4
Treasury stock issued under management incentive and stock option plans, value	174		141	33
Balance, value at Jul. 28, 2013	1,210	12	(364)	362	1,772	(565)	(7)
Treasury stock, shares at Jul. 28, 2013			(11)
Capital stock, shares at Jul. 28, 2013		323
Contribution from noncontrolling interest	5						5
Net earnings (loss)	807				818		(11)
Other comprehensive income (loss)	(3)					(4)	1
Dividends	(392)				(392)
Dividends per share	$ 1.248
Treasury stock purchased, shares			(2)
Treasury stock purchased, value	(76)		(76)
Treasury stock issued under management incentive and stock option plans, shares			3
Treasury stock issued under management incentive and stock option plans, value	52		84	(32)
Balance, value at Aug. 03, 2014	$ 1,603	$ 12	$ (356)	$ 330	$ 2,198	$ (569)	$ (12)
Treasury stock, shares at Aug. 03, 2014			(10)
Capital stock, shares at Aug. 03, 2014		323