Restructuring Charges (Schedule Of Restructuring Activity And Related Reserves) (Details) (Severance Pay And Benefits [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Feb. 01, 2015
2014 Initiatives [Member]
Restructuring Reserve [Roll Forward]
Accrued Balance at beginning of period	$ 28
Restructuring and Related Cost, Incurred Cost	0
Cash Payments	(13)
Restructuring Reserve, Translation Adjustment	(2)
Accrued Balance at end of period	13
2013 Initiatives [Member]
Restructuring Reserve [Roll Forward]
Accrued Balance at beginning of period	3
Restructuring and Related Cost, Incurred Cost	0
Cash Payments	(2)
Accrued Balance at end of period	$ 1