Quarterly Data (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
Net sales	$ 1,607		$ 1,813		$ 2,127		$ 2,172		$ 1,518		$ 1,802		$ 2,153		$ 2,203		$ 7,719		$ 7,676		$ 7,586
Gross profit	639		732		838		894		613		743		871		923
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
Net earnings attributable to Campbell Soup Company - 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]
Dividends	$ 0.29		$ 0.29		$ 0.29		$ 0.275		$ 0.275		$ 0.275		$ 0.275		$ 0.25		$ 1.145		$ 1.075		$ 1
Net earnings attributable to Campbell Soup Company - assuming dilution	$ 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]
Market price per share, High	$ 35.66		$ 35.00		$ 36.99		$ 37.59		$ 37.50		$ 36.25		$ 35.80		$ 33.98
Market price per share, Low	$ 32.80		$ 32.66		$ 33.44		$ 35.32		$ 34.18		$ 32.18		$ 30.96		$ 29.81
2011 Initiatives [Member]
Restructuring charges, after tax	41																41
Restructuring charges, per diluted share	$ 0.12																$ 0.12
2008 Initiatives [Member]
Restructuring charges, after tax											8								8		15
Restructuring charges, per diluted share											$ 0.02								$ 0.02		$ 0.04
U.S. Health Care Legislation [Member]
Deferred tax expense											$ 10
Deferred tax expense, per diluted share											$ 0.03

[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.