Restructuring Charges and Cost Savings Initiatives (Narrative) (Details) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended			12 Months Ended
	May. 01, 2016 USD ($) $ / shares	May. 03, 2015 USD ($) $ / shares	May. 01, 2016 USD ($) $ / shares		May. 03, 2015 USD ($)	Aug. 02, 2015 USD ($) $ / shares
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2	$ 9	$ 32		$ 9
Other Cost Savings Implementation Costs [Member] | Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	(13)	(9)	$ (35)		(9)
2015 Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated			245
Restructuring charges	2		$ 35		9	$ 102
Restructuring and Related Cost, Incurred Cost	15		70
Restructuring charges and related costs, after tax	$ 9	$ 11	$ 44			$ 78
Restructuring charges, Per Diluted Share | $ / shares	$ 0.03	$ 0.04	$ 0.14			$ 0.25
2015 Initiatives [Member] | Americas Simple Meals and Beverages [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 1		$ 17
Restructuring and Related Cost, Expected Cost Allocation	31.00%		31.00%
2015 Initiatives [Member] | Global Biscuits and Snacks [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 3		$ 23
Restructuring and Related Cost, Expected Cost Allocation	35.00%		35.00%
2015 Initiatives [Member] | Campbell Fresh [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 0		$ 0
Restructuring and Related Cost, Expected Cost Allocation	3.00%		3.00%
2015 Initiatives [Member] | Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 11		$ 30
Restructuring and Related Cost, Expected Cost Allocation	31.00%		31.00%
2015 Initiatives [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 250		$ 250
2015 Initiatives [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	325		325
2015 Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost			34
2015 Initiatives [Member] | Severance Pay And Benefits [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	150		150
2015 Initiatives [Member] | Severance Pay And Benefits [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	165		165
2015 Initiatives [Member] | Implementation and Other Costs [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	100		100
2015 Initiatives [Member] | Implementation and Other Costs [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	160		$ 160
2015 Initiatives [Member] | UNITED STATES
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated			471
2015 Initiatives [Member] | General and Administrative Expense [Member] | Other Cost Savings Implementation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 13		$ 35	[1]	$ 9	$ 22
2014 Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			(3)
Restructuring charges and related costs, after tax			$ (2)
Restructuring charges, Per Diluted Share | $ / shares			$ 0.01
2014 Initiatives [Member] | Severance Pay And Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ (3)

[1] Includes other costs recognized as incurred that are not reflected in the restructuring reserve in the Consolidated Balance Sheet. The costs are included in Administrative expenses in the Consolidated Statements of Earnings.