Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Millions, except Per Share data	3 Months Ended																12 Months Ended
	Jul. 31, 2011		May 01, 2011		Jan. 30, 2011		Oct. 31, 2010		Aug. 01, 2010		May 02, 2010		Jan. 31, 2010		Nov. 01, 2009		Jul. 31, 2011		Aug. 01, 2010		Aug. 02, 2009
Earnings Per Share
Earnings from continuing operations attributable to Campbell Soup Company																	$ 805		$ 844		$ 732
Less: Allocation of earnings to participating securities																	(9)		(14)		(12)
Earnings available to Campbell Soup Company common shareowners																	796		830		720
Earnings from discontinued operations attributable to Campbell Soup Company																					4
Less: Allocation of earnings to participating securities
Available to Campbell Soup Company common shareowners																					4
Net earnings attributable to Campbell Soup Company	100	[1]	187	[1]	239	[1]	279	[1]	113	[2]	168	[2]	259	[2]	304	[2]	805		844		736
Less: Allocation of earnings to participating securities																	(9)		(14)		(12)
Available to Campbell Soup Company common shareowners																	$ 796		$ 830		$ 724
Weighted average shares outstanding - basic																	326		340		352
Effect of dilutive securities: stock options and other share-based payment awards																	3		3		2
Weighted average shares outstanding - diluted																	329		343		354
Earnings from continuing operations attributable to Campbell Soup Company per common share: Basic																	$ 2.44		$ 2.44		$ 2.05
Earnings from continuing operations attributable to Campbell Soup Company per common share: Diluted																	$ 2.42		$ 2.42		$ 2.03
Earnings from discontinued operations attributable to Campbell Soup Company per common share: Basic																					$ 0.01
Earnings from discontinued operations attributable to Campbell Soup Company per common share: Diluted																					$ 0.01
Net earnings attributable to Campbell Soup Company per common share: Basic	$ 0.31		$ 0.58		$ 0.72		$ 0.82		$ 0.33		$ 0.49		$ 0.74		$ 0.87		$ 2.44	[3]	$ 2.44	[3]	$ 2.06	[3]
Net earnings attributable to Campbell Soup Company per common share: Diluted	$ 0.31	[1]	$ 0.57	[1]	$ 0.71	[1]	$ 0.82	[1]	$ 0.33	[2]	$ 0.49	[2]	$ 0.74	[2]	$ 0.87	[2]	$ 2.42	[3]	$ 2.42	[3]	$ 2.05	[3]

[1] 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 7.

[2] Includes an $8 ($.02 per diluted share) restructuring charge in the third quarter for pension benefit costs related to the 2008 initiatives to improve operational efficiency and long-term profitability. See also Note 7. A $10 ($.03 per diluted share) deferred tax expense to reduce deferred tax assets as a result of the U.S. health care legislation enacted in March 2010 was recorded in the third quarter. See also Note 12.

[3] The sum of the individual per share amounts does not equal due to rounding.