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. 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	0
Net earnings (loss)	430				435		(5)
Other comprehensive income (loss)	76					76	0
Dividends	(279)				(279)
Dividends per share	$ 0.87
Treasury stock purchased, shares			(2)
Treasury stock purchased, value	(63)		(63)
Treasury stock retired, shares		219	219
Treasury stock retired, value	0	8	7,907		7,899
Treasury stock issued under management incentive and stock option plans, shares			3
Treasury stock issued under management incentive and stock option plans, value	93		91	2
Balance, value at Jan. 27, 2013	1,155	12	(324)	331	1,841	(700)	(5)
Treasury stock, shares at Jan. 27, 2013			(10)
Capital stock, shares at Jan. 27, 2013		323
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)	489				497		(8)
Other comprehensive income (loss)	(52)					(51)	(1)
Dividends	(196)				(196)
Dividends per share	$ 0.624
Treasury stock purchased, shares			(2)
Treasury stock purchased, value	(76)		(76)
Treasury stock issued under management incentive and stock option plans, shares			2
Treasury stock issued under management incentive and stock option plans, value	19		66	(47)
Balance, value at Jan. 26, 2014	$ 1,399	$ 12	$ (374)	$ 315	$ 2,073	$ (616)	$ (11)
Treasury stock, shares at Jan. 26, 2014			(11)
Capital stock, shares at Jan. 26, 2014		323