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Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	May 03, 2015	Apr. 27, 2014	May 03, 2015	Apr. 27, 2014	Aug. 03, 2014
Discontinued Operations and Disposal Groups [Abstract]
Net sales				$ 137
Gain on sale of business				141	141
Earnings from operations, before taxes				14
Earnings before taxes				155
Taxes on earnings				(74)
Earnings (loss) from discontinued operations	$ 0	$ 0	$ 0	$ 81