Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Apr. 28, 2013		Apr. 29, 2012		Apr. 28, 2013		Apr. 29, 2012
Statement of Other Comprehensive Income [Abstract]
Net earnings	$ 179		$ 175		$ 609		$ 639
Other comprehensive income (loss), before tax [Abstract]
Foreign currency translation adjustments, before tax	(32)		(16)		6		(96)
Cash-flow hedges, before tax [Abstract]
Unrealized gains (losses) arising during the period, before tax	(5)		3		(1)		7
Reclassification adjustment for (gains) losses included in net earnings, before tax			(6)		1		2
Pension and other postretirement benefits, before tax, [Abstract]
Net actuarial gain (loss) arising during the period, before tax	1		(1)		1		6
Reclassification of prior service credit included in net earnings, before tax					(2)	[1]	(1)	[1]
Reclassification of net actuarial loss included in net earnings before tax	31	[1]	21	[1]	93	[1]	62	[1]
Other comprehensive income (loss), before tax	(5)		1		98		(20)
Other comprehensive income (loss), tax (expense) benefit [Abstract]
Foreign currency translation adjustments, tax (expense) benefit	5		5		1		(12)
Cash-flow hedges, tax effect [Abstract]
Unrealized gains (losses) arising during the period, tax (expense) benefit	2		(1)				(2)
Reclassification adjustment for (gains) losses included in net earnings, tax (expense) benefit			2
Pension and other postretirement liability adjustments, tax effect [Abstract]
Net actuarial gain (loss) arising during the period, tax (expense) benefit							(2)
Reclassification of net actuarial loss included in net earnings, tax (expense) benefit	(11)		(7)		(32)		(22)
Other comprehensive income (loss), tax (expense) benefit	(4)		(1)		(31)		(38)
Other comprehensive income (loss), after-tax [Abstract]
Foreign currency translation adjustments, after-tax	(27)		(11)		7		(108)
Cash-flow hedges, after-tax[Abstract]
Unrealized gains (losses) arising during the period, after-tax	(3)		2		(1)		5
Reclassification adjustment for (gains) losses included in net earnings, after-tax			(4)		1		2
Pension and other postretirement liability adjustments, after-tax [Abstract]
Net actuarial gain (loss) arising during the period, after-tax	1		(1)		1		4
Reclassification of prior service credit included in net earnings, after tax					(2)		(1)
Reclassification of net actuarial loss included in net earnings, after-tax	20		14		61		40
Other comprehensive income (loss), after tax	(9)		0		67		(58)
Total comprehensive income (loss), after-tax	170		175		676		581
Total comprehensive income (loss) attributable to noncontrolling interests	(2)		(2)		(7)		(8)
Total comprehensive income (loss) attributable to Campbell Soup Company	$ 172		$ 177		$ 683		$ 589

[1] These items are included in the components of net periodic benefit costs (see Note 10 for additional details).