Quarterly Data (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Aug. 02, 2015	May. 03, 2015	Feb. 01, 2015	Nov. 02, 2014	Aug. 03, 2014	Apr. 27, 2014	Jan. 26, 2014	Oct. 27, 2013	Aug. 02, 2015	Aug. 03, 2014	Jul. 28, 2013
Net sales	$ 1,693	$ 1,900	$ 2,234	$ 2,255	$ 1,852	$ 1,970	$ 2,281	$ 2,165	$ 8,082	$ 8,268	$ 8,052
Gross Profit	612	682	728	783	631	676	814	777
Earnings from continuing operations					137	184	235	181	691	726	680
Earnings (loss) from discontinued operations					0	0	90	(9)	0	81	(231)
Net Income (Loss) Attributable to Parent	$ 68	$ 182	$ 207	$ 234	$ 137	$ 184	$ 325	$ 172	$ 691	$ 818	$ 458
Earnings (Loss) from Continuing Operations, Per Basic Share					$ 0.44	$ 0.59	$ 0.75	$ 0.58	$ 2.21	$ 2.35	$ 2.19
Earnings (loss) from discontinued operations, Per Basic Share					0.00	0.00	0.29	(0.03)	0.00	0.26	(0.74)
Earnings Per Share, Basic	$ 0.22	$ 0.59	$ 0.66	$ 0.75	0.44	0.59	1.04	0.55	2.21	2.61	1.46
Common Stock, Dividends, Per Share, Declared	0.312	0.312	0.312	0.312	0.312	0.312	0.312	0.312	1.248	1.248	1.16
Earnings (Loss) from Continuing Operations, Per Diluted Share					0.43	0.58	0.74	0.57	2.21	2.33	2.17
Earnings (loss) from discontinued operations, Per Diluted Share					0.00	0.00	0.28	(0.03)	0.00	0.26	(0.73)
Earnings Per Share, Diluted	$ 0.22	$ 0.58	$ 0.66	$ 0.74	$ 0.43	$ 0.58	$ 1.03	$ 0.54	2.21	$ 2.59	$ 1.44
Restructuring charges, after tax	$ 67	$ 11	$ 0	$ 0	$ 15	$ 1	$ 5	$ 15
Defined Benefit Plan Recognized Net Gain Loss Due to Settlements Net Of Tax					3	11	0	0
Derivatives (Gain) Loss					0	0	0	6
Other Tax Expense (Benefit)					$ 0	$ 0	$ 0	$ 7
Restructuring charges, Per Diluted Share	$ 0.21	$ 0.04	$ 0.00	$ 0.00	$ 0.05	$ 0.00	$ 0.02	$ 0.05
Defined Benefit Plan Recognized Loss Due To Settlements, Per Diluted Share					0.01	0.03	0.00	0.00
Derivative Loss Net, Per Diluted Share					0.00	0.00	0.00	0.02
Other Tax Expense, Per Diluted Share					$ 0.00	$ 0.00	$ 0.00	$ 0.02
Discontinued Operations [Member]
Earnings (loss) from discontinued operations										$ 81	$ (231)
Discontinued Operation, (Gain) Loss on Disposal of Discontinued Operation, Net of Tax					$ 0	$ 0	$ 90	$ (18)		$ (72)
(Income) Loss from Disposal of Discontinued Operations, Net of Tax, Per Diluted Share					$ (0.00)	$ (0.00)	$ 0.28	$ (0.06)		$ (0.23)
Maximum [Member]
Share Price	49.54	48.31	47.45	45.12	46.67	45.48	43.70	48.08	49.54	46.67
Minimum [Member]
Share Price	$ 44.92	$ 44.45	$ 42.70	$ 41.15	$ 41.39	$ 39.60	$ 38.30	$ 39.87	$ 44.92	$ 41.39