Consolidated Statements of Earnings (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 29, 2012	Jan. 30, 2011	Jan. 29, 2012	Jan. 30, 2011
Income Statement [Abstract]
Net sales	$ 2,112	$ 2,127	$ 4,273	$ 4,299
Costs and expenses
Cost of products sold	1,301	1,289	2,608	2,567
Marketing and selling expenses	297	291	558	568
Administrative expenses	152	154	297	294
Research and development expense	29	31	59	62
Other expenses / (income)	1	3	1	5
Restructuring charges	3	0	5	0
Total costs and expenses	1,783	1,768	3,528	3,496
Earnings before interest and taxes	329	359	745	803
Interest expense	28	34	58	66
Interest income	2	3	4	5
Earnings before taxes	303	328	691	742
Taxes on earnings	102	89	227	224
Net earnings	201	239	464	518
Less: Net earnings (loss) attributable to noncontrolling interests	(4)	0	(6)	0
Net earnings attributable to Campbell Soup Company	$ 205	$ 239	$ 470	$ 518
Per Share - Basic
Net earnings attributable to Campbell Soup Company	$ 0.64	$ 0.72	$ 1.46	$ 1.54
Dividends	$ 0.29	$ 0.29	$ 0.58	$ 0.565
Weighted average shares outstanding - basic	318	330	319	332
Per Share - Assuming Dilution
Net earnings attributable to Campbell Soup Company	$ 0.64	$ 0.71	$ 1.45	$ 1.53
Weighted average shares outstanding - assuming dilution	320	332	321	335