Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 28, 2013		Jul. 29, 2012		Jul. 31, 2011
Statement of Other Comprehensive Income [Abstract]
Net earnings	$ 449		$ 764		$ 802
Other comprehensive income (loss), before tax [Abstract]
Foreign currency translation adjustments, before tax	(95)		(127)		269
Cash-flow hedges, before tax [Abstract]
Unrealized gains (losses) arising during the period, before tax	20		15		(12)
Reclassification adjustment for (gains) losses included in net earnings, before tax	4		0		9
Pension and other postretirement benefits, before tax, [Abstract]
Net actuarial gain (loss) arising during the period, before tax	322		(428)		0
Reclassification of prior service credit included in net earnings, before tax	(2)	[1]	(1)	[1]	0
Reclassification of net actuarial loss included in net earnings before tax	124	[1]	83	[1]	77	[1]
Other comprehensive income (loss), before tax	373		(458)		343
Other comprehensive income (loss), tax (expense) benefit [Abstract]
Foreign currency translation adjustments, tax (expense) benefit	3		(8)		(5)
Cash-flow hedges, tax effect [Abstract]
Unrealized gains (losses) arising during the period, tax (expense) benefit	(8)		(5)		4
Reclassification adjustment for (gains) losses included in net earnings, tax expense (benefit)	(1)		0		(3)
Pension and other postretirement liability adjustments, tax effect [Abstract]
Net actuarial gain (loss) arising during the period, tax (expense) benefit	(103)		151		0
Reclassification of net actuarial loss included in net earnings, tax (expense) benefit	(54)		(29)		(30)
Other comprehensive income (loss), tax (expense) benefit	(163)		109		(34)
Other comprehensive income (loss), after-tax [Abstract]
Foreign currency translation adjustments, after-tax	(92)		(135)		264
Cash-flow hedges, after-tax[Abstract]
Unrealized gains (losses) arising during the period, after-tax	12		10		(8)
Reclassification adjustment for (gains) losses included in net earnings, after-tax	3		0		6
Pension and other postretirement liability adjustments, after-tax [Abstract]
Net actuarial gain (loss) arising during the period, after-tax	219		(277)		0
Reclassification of prior service credit included in net earnings, after tax	(2)		(1)		0
Reclassification of net actuarial loss included in net earnings, after-tax	70		54		47
Other comprehensive income (loss), after tax	210		(349)		309
Total comprehensive income (loss), after-tax	659		415		1,111
Total comprehensive income (loss) attributable to noncontrolling interests	(10)		(10)		(3)
Total comprehensive income (loss) attributable to Campbell Soup Company	$ 669		$ 425		$ 1,114

[1] These items are included in the components of net periodic benefit costs. See Note 11 for additional details.