Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended													12 Months Ended
	Jul. 29, 2012		Apr. 29, 2012		Jan. 29, 2012		Oct. 30, 2011		Jul. 31, 2011		May 01, 2011	Jan. 30, 2011	Oct. 31, 2010	Jul. 29, 2012	Jul. 31, 2011	Aug. 01, 2010
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net earnings attributable to Campbell Soup Company	$ 127	[1]	$ 177	[1]	$ 205	[1]	$ 265	[1]	$ 100	[2]	$ 187	$ 239	$ 279	$ 774	$ 805	$ 844
Less: net earnings allocated to participating securities														(5)	(9)	(14)
Net earnings available to Campbell Soup Company common shareowners														$ 769	$ 796	$ 830
Weighted average shares outstanding - basic														317	326	340
Effect of dilutive securities: stock options and other share-based payment awards														2	3	3
Weighted average shares outstanding - diluted														319	329	343
Net earnings attributable to Campbell Soup Company per common share: Basic	$ 0.40		$ 0.56		$ 0.64		$ 0.82		$ 0.31		$ 0.58	$ 0.72	$ 0.82	$ 2.43	$ 2.44	$ 2.44
Net earnings attributable to Campbell Soup Company per common share: Diluted	$ 0.40	[1]	$ 0.55	[1]	$ 0.64	[1]	$ 0.82	[1]	$ 0.31	[2]	$ 0.57	$ 0.71	$ 0.82	$ 2.41	$ 2.42	$ 2.42

[1] Restructuring charges associated with the 2011 initiatives to improve supply chain efficiency, reduce overhead costs, and exit the Russian market were recorded as follows: $1 in the first quarter; $2 ($.01 per diluted share) in the second quarter; and $3 ($.01 per diluted share) in the third quarter. See also Note 6. In addition, acquisition related costs of $3 ($0.01 per share) were recorded in the fourth quarter.

[2] Includes a $41 ($.12 per diluted share) restructuring charge in the fourth quarter related to the 2011 initiatives to improve supply chain efficiency, reduce overhead costs, and exit the Russian market. See also Note 6.