Restructuring Charges (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		4 Months Ended				3 Months Ended	4 Months Ended	7 Months Ended	9 Months Ended	7 Months Ended	9 Months Ended	7 Months Ended	9 Months Ended	7 Months Ended	9 Months Ended	7 Months Ended				3 Months Ended	9 Months Ended	12 Months Ended	22 Months Ended
	Apr. 28, 2013	Apr. 29, 2012	Apr. 28, 2013	Apr. 29, 2012	Apr. 28, 2013 MEXICO	Apr. 28, 2013 MEXICO Asset Impairment Accelerated Depreciation [Member]	Apr. 28, 2013 MEXICO Other Restructuring [Member]	Apr. 28, 2013 MEXICO Severance Pay And Benefits [Member]	Apr. 28, 2013 2013 Initiatives [Member]	Jan. 27, 2013 2013 Initiatives [Member]	Apr. 28, 2013 2013 Initiatives [Member]	Apr. 28, 2013 2013 Initiatives [Member]	Apr. 28, 2013 2013 Initiatives [Member] Severance Pay And Benefits [Member]	Apr. 28, 2013 2013 Initiatives [Member] Severance Pay And Benefits [Member]	Apr. 28, 2013 2013 Initiatives [Member] Asset Impairment Accelerated Depreciation [Member]	Apr. 28, 2013 2013 Initiatives [Member] Asset Impairment Accelerated Depreciation [Member]	Apr. 28, 2013 2013 Initiatives [Member] Other Restructuring [Member]	Apr. 28, 2013 2013 Initiatives [Member] Other Restructuring [Member]	Apr. 28, 2013 2013 Initiatives [Member] Sacramento, CA [Member]	Apr. 28, 2013 2013 Initiatives [Member] South Plainfield, NJ [Member]	Apr. 28, 2013 2013 Initiatives [Member] U.S. Simple Meals [Member]	Apr. 28, 2013 2013 Initiatives [Member] U.S. Beverages [Member]	Jul. 31, 2011 2011 Initiatives [Member]	Apr. 29, 2012 2011 Initiatives [Member]	Jul. 29, 2012 2011 Initiatives [Member]	Apr. 28, 2013 2011 Initiatives [Member]	Apr. 28, 2013 2011 Initiatives [Member] Severance Pay And Benefits [Member]	Apr. 28, 2013 2011 Initiatives [Member] Asset Impairment Accelerated Depreciation [Member]	Apr. 28, 2013 2011 Initiatives [Member] Other Restructuring [Member]	Apr. 28, 2013 2011 Initiatives [Member] Camden New Jersey [Member]	Apr. 28, 2013 2011 Initiatives [Member] Outsource Of U.S. Retail Merchandising [Member]	Apr. 28, 2013 2011 Initiatives [Member] Moscow [Member]	Apr. 28, 2013 2011 Initiatives [Member] U.S. Simple Meals [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated					260						727								700	27						190
Curtailment loss					$ 3
Restructuring and Related Cost, Incurred Cost								1				105		22		80		3
Asset Impairment Charges					3
Positions eliminated																										510				130	190	50
Restructuring charges	1	4	31	9	7							24											63	9	10
Restructuring Reserve, Accelerated Depreciation									20			81
Restructuring charges and related costs, after tax												66
Restructuring charges, after tax					5																		41	6	6
Restructuring charges per diluted share					$ 0.02							$ 0.21											$ 0.12	$ 0.02	$ 0.02
Restructuring and Related Cost, Expected Cost					9	1	1			115	120		22		86		12									74	41	23	10
Expected cash expenditures					4						32															50
Expected investment in capital expenditures											27															40
Payments for (Proceeds from) Productive Assets																										31
Aggregate pre-tax costs expected to be incurred											$ 15		$ 0		$ 6		$ 9				$ 12	$ 3				$ 1			$ 1				$ 1