Taxes on Earnings Schedule of Deferred Tax Liabilities and Assets (Details) (USD $) In Millions, unless otherwise specified	Aug. 03, 2014	Jul. 28, 2013
Income Tax Disclosure [Abstract]
Deferred Tax Liabilities, Property, Plant and Equipment	$ 300	$ 302
Deferred Tax Liabilities, Goodwill and Intangible Assets	541	484
Deferred Tax Liabilities, Other	17	66
Deferred Tax Liabilities, Gross	858	852
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits	294	316
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions	63	61
Deferred Tax Assets, Operating Loss Carryforwards	49	95
Deferred Tax Assets, Capital Loss Carryforwards	112	104
Deferred Tax Assets, Other	70	73
Deferred Tax Assets, Gross	588	649
Deferred Tax Assets, Valuation Allowance	(151)	(148)
Deferred Tax Assets, Net of Valuation Allowance	437	501
Deferred Tax Liabilities, Net	$ 421	$ 351