Pension And Postretirement Benefits (Narrative) (Details) - Non-U.S. Pension Plan, Defined Benefit [Member] $ in Millions	6 Months Ended
	Jan. 29, 2017 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 3
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year	$ 2