Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Apr. 27, 2014		Apr. 28, 2013		Apr. 27, 2014		Apr. 28, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 183		$ 179		$ 672		$ 609
Other comprehensive income (loss), before tax [Abstract]
Foreign currency translation adjustments, before tax	68		(32)		(1)		6
Reclassification of currency translation adjustments realized upon disposal of business, before tax					(22)		0
Cash-flow hedges, before tax [Abstract]
Unrealized gains (losses) arising during the period, before tax	(5)		(5)		(4)		(1)
Reclassification adjustment for (gains) losses included in net earnings, before tax	1		0		1		1
Pension and other postretirement benefits, before tax, [Abstract]
Net actuarial gain (loss) arising during the period, before tax	(1)		1		7		1
Reclassification of prior service credit included in net earnings, before tax	(1)	[1]	0	[1]	(2)	[1]	(2)	[1]
Reclassification of net actuarial loss included in net earnings before tax	40	[1]	31	[1]	87	[1]	93	[1]
Other comprehensive income (loss), before tax	102		(5)		66		98
Other comprehensive income (loss), tax (expense) benefit [Abstract]
Foreign currency translation adjustments, tax (expense) benefit	0		5		(1)		1
Reclassification of currency translation adjustments realized upon disposal of business, tax (expense) benefit					3		0
Cash-flow hedges, tax effect [Abstract]
Unrealized gains (losses) arising during the period, tax (expense) benefit	2		2		2		0
Reclassification adjustment for (gains) losses included in net earnings, tax (expense) benefit	0		0		0		0
Pension and other postretirement liability adjustments, tax effect [Abstract]
Net actuarial gain (loss) arising during the period, tax (expense) benefit	0		0		(2)		0
Reclassification of prior service credit included in net earnings, tax (expense) benefit	0		0		0		0
Reclassification of net actuarial loss included in net earnings, tax (expense) benefit	(14)		(11)		(30)		(32)
Other comprehensive income (loss), tax (expense) benefit	(12)		(4)		(28)		(31)
Other comprehensive income (loss), after-tax [Abstract]
Foreign currency translation adjustments, after-tax	68		(27)		(2)		7
Reclassification of currency translation adjustments realized upon disposal of business, after-tax					(19)		0
Cash-flow hedges, after-tax[Abstract]
Unrealized gains (losses) arising during the period, after-tax	(3)		(3)		(2)		(1)
Reclassification adjustment for (gains) losses included in net earnings, after-tax	1		0		1		1
Pension and other postretirement liability adjustments, after-tax [Abstract]
Net actuarial gain (loss) arising during the period, after-tax	(1)		1		5		1
Reclassification of prior service credit included in net earnings, after-tax	(1)		0		(2)		(2)
Reclassification of net actuarial loss included in net earnings, after-tax	26		20		57		61
Other comprehensive income (loss), after tax	90		(9)		38		67
Total comprehensive income (loss), after-tax	273		170		710		676
Total comprehensive income (loss) attributable to noncontrolling interests	0		(2)		(9)		(7)
Total comprehensive income (loss) attributable to Campbell Soup Company	$ 273		$ 172		$ 719		$ 683

[1] Net actuarial losses of $2 were recognized in earnings from discontinued operations as a result of the sale of the European simple meals business. Excluding the net actuarial losses related to the sale of the business, these items are included in the components of net periodic benefit costs (see Note 11 for additional details).