Restructuring Charges (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended			10 Months Ended	12 Months Ended	10 Months Ended					7 Months Ended	3 Months Ended	10 Months Ended			3 Months Ended	12 Months Ended		25 Months Ended		12 Months Ended	25 Months Ended							3 Months Ended				12 Months Ended	3 Months Ended
	Jul. 28, 2013	Apr. 28, 2013	Jan. 27, 2013	Oct. 28, 2012	Jul. 29, 2012	Apr. 29, 2012	Jan. 29, 2012	Oct. 30, 2011	Jul. 28, 2013	Jul. 29, 2012	Jul. 31, 2011	Jul. 28, 2013 2013 Initiatives [Member]	Jul. 28, 2013 2013 Initiatives [Member]	Jul. 28, 2013 2013 Initiatives [Member] Severance Pay And Benefits [Member]	Jul. 28, 2013 2013 Initiatives [Member] Asset Impairment Accelerated Depreciation [Member]	Jul. 28, 2013 2013 Initiatives [Member] Other Restructuring [Member]	Jul. 28, 2013 2013 Initiatives [Member] Sacramento, CA [Member]	Jul. 28, 2013 2013 Initiatives [Member] South Plainfield, NJ [Member]	Jul. 28, 2013 2013 Initiatives [Member] MEXICO	Jul. 28, 2013 2013 Initiatives [Member] UNITED STATES	Jul. 28, 2013 2013 Initiatives [Member] U.S. Simple Meals [Member]	Jul. 28, 2013 2013 Initiatives [Member] Global Baking And Snacking [Member]	Jul. 28, 2013 2013 Initiatives [Member] International Simple Meals And Beverages [Member]	Jul. 31, 2011 2011 Initiatives [Member]	Jul. 28, 2013 2011 Initiatives [Member]	Jul. 29, 2012 2011 Initiatives [Member]	Jul. 28, 2013 2011 Initiatives [Member]	Jul. 28, 2013 2011 Initiatives [Member] Severance Pay And Benefits [Member]	Jul. 29, 2012 2011 Initiatives [Member] Asset Impairment Accelerated Depreciation [Member]	Jul. 28, 2013 2011 Initiatives [Member] Asset Impairment Accelerated Depreciation [Member]	Jul. 28, 2013 2011 Initiatives [Member] Other Restructuring [Member]	Jul. 28, 2013 2011 Initiatives [Member] Camden New Jersey [Member]	Jul. 28, 2013 2011 Initiatives [Member] Outsource Of U.S. Retail Merchandising [Member]	Jul. 28, 2013 2011 Initiatives [Member] AUSTRALIA	Jul. 28, 2013 2011 Initiatives [Member] Moscow [Member]	Jul. 28, 2013 2011 Initiatives [Member] U.S. Simple Meals [Member]	Jul. 29, 2012 Segment, Discontinued Operations [Member]	Apr. 29, 2012 Segment, Discontinued Operations [Member]	Jan. 29, 2012 Segment, Discontinued Operations [Member]	Oct. 30, 2011 Segment, Discontinued Operations [Member]	Jul. 29, 2012 Segment, Discontinued Operations [Member] 2011 Initiatives [Member]	Jul. 28, 2013 Pepperidge Farm Initiative [Member] 2013 Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated																	700	27	260	70														190								110
Positions eliminated																											510					130	190		50
Restructuring charges									$ 51	$ 7	$ 60		$ 51											$ 63	$ 0	$ 10			$ 1												$ 3
Restructuring Reserve, Accelerated Depreciation													91
Restructuring charges and related costs, after tax													90
Restructuring charges, after tax	19	14	30	27	0	2	1	1																41		6											0	1	1	0
Restructuring charges per diluted share	$ 0.06	$ 0.04	$ 0.09	$ 0.09	$ 0.00	$ 0.01	$ 0.00	$ 0.00					$ 0.28											$ 0.12		$ 0.02
Restructuring and Related Cost, Expected Cost												150		37	99	14											74	41		23	10
Expected cash expenditures												47															50
Expected investment in capital expenditures												31															40
Payments for (Proceeds from) Productive Assets												12															33
Aggregate pre-tax costs expected to be incurred												$ 8									$ 2	$ 4	$ 2													$ 1