Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Nov. 02, 2014		Oct. 27, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 234		$ 171
Other comprehensive income (loss), before tax [Abstract]
Foreign currency translation adjustments, before tax	(83)		48
Cash-flow hedges, before tax [Abstract]
Unrealized gains (losses) arising during the period, before tax	(1)		(3)
Reclassification adjustment for (gains) losses included in net earnings, before tax	1		0
Pension and other postretirement benefits, before tax, [Abstract]
Net actuarial gain (loss) arising during the period, before tax	4		0
Reclassification of net actuarial loss included in net earnings before tax	24	[1]	22	[1]
Other comprehensive income (loss), before tax	(55)		67
Other comprehensive income (loss), tax (expense) benefit [Abstract]
Foreign currency translation adjustments, tax (expense) benefit	0		(2)
Cash-flow hedges, tax effect [Abstract]
Unrealized gains (losses) arising during the period, tax (expense) benefit	0		1
Reclassification adjustment for (gains) losses included in net earnings, tax (expense) benefit	0		0
Pension and other postretirement liability adjustments, tax effect [Abstract]
Net actuarial gain (loss) arising during the period, tax (expense) benefit	(1)		0
Reclassification of net actuarial loss included in net earnings, tax (expense) benefit	(9)		(8)
Other comprehensive income (loss), tax (expense) benefit	(10)		(9)
Other comprehensive income (loss), after-tax [Abstract]
Foreign currency translation adjustments, after-tax	(83)		46
Cash-flow hedges, after-tax[Abstract]
Unrealized gains (losses) arising during the period, after-tax	(1)		(2)
Reclassification adjustment for (gains) losses included in net earnings, after-tax	1		0
Pension and other postretirement liability adjustments, after-tax [Abstract]
Net actuarial gain (loss) arising during the period, after-tax	3		0
Reclassification of net actuarial loss included in net earnings, after-tax	15		14
Other comprehensive income (loss), after tax	(65)		58
Total comprehensive income (loss), after-tax	169		229
Total comprehensive income (loss) attributable to noncontrolling interests	0		(2)
Total comprehensive income (loss) attributable to Campbell Soup Company	$ 169		$ 231

[1] Included in the components of net periodic benefit costs (see Note 11 for additional details).