Consolidated Statements of Earnings (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jul. 29, 2012	Jul. 31, 2011	Aug. 01, 2010
Income Statement [Abstract]
Net sales	$ 7,707	$ 7,719	$ 7,676
Costs and expenses
Cost of products sold	4,715	4,616	4,526
Marketing and selling expenses	1,020	1,007	1,058
Administrative expenses	611	612	605
Research and development expenses	125	129	123
Other expenses / (income)	14	13	4
Restructuring charges	10	63	12
Total costs and expenses	6,495	6,440	6,328
Earnings before interest and taxes	1,212	1,279	1,348
Interest expense	114	122	112
Interest income	8	11	6
Earnings before taxes	1,106	1,168	1,242
Taxes on earnings	342	366	398
Net earnings	764	802	844
Less: Net earnings (loss) attributable to noncontrolling interests	(10)	(3)	0
Net earnings attributable to Campbell Soup Company	$ 774	$ 805	$ 844
Per Share - Basic
Net earnings attributable to Campbell Soup Company	$ 2.43	$ 2.44	$ 2.44
Weighted average shares outstanding - basic	317	326	340
Per Share - Assuming Dilution
Net earnings attributable to Campbell Soup Company	$ 2.41	$ 2.42	$ 2.42
Weighted average shares outstanding - assuming dilution	319	329	343