Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Oct. 27, 2013	Oct. 28, 2012	Jul. 28, 2013	Jul. 29, 2012
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 137	$ 131
Earnings before taxes	9	17
Taxes on earnings	18	4
Earnings (loss) from discontinued operations	(9)	13
Cash	14	0	68	0
Accounts receivable	98		54
Inventories	78		68
Prepaid expense	3		3
Current assets of discontinued operations held for sale	193		193
Plant assets	102		98
Goodwill	115		110
Intangible assets	156		150
Other assets	34		35
Non-current assets of discontinued operations held for sale	407		393
Accounts payable	81		60
Accrued liabilities	71		54
Current liabilties of discontinued operations held for sale	152		114
Non-current pension obligation	11		11
Other liabilities	12		11
Noncurrent liabilities of discontinued operations held for sale	$ 23		$ 22

The aggregate value (measured at the lower of net carrying value or fair value less cost of disposal) for current assets (assets with expected useful life shorter than one year or one operating cycle, whichever is longer) of a disposal group, including a component of the entity (discontinued operation), to be sold or that has subsequently been disposed of through sale, as of the financial statement date.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant