Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended
		Oct. 30, 2016	Nov. 01, 2015
Statement of Comprehensive Income [Abstract]
Net earnings		$ 292	$ 194
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax [Abstract]
Foreign currency translation adjustments, before tax		(8)	(26)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax [Abstract]
Unrealized gains (losses) arising during period, before Tax		13	(8)
Reclassification adjustment for (gains) losses included in net earnings, before tax		2	(2)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax, [Abstract]
Reclassification of prior service credit included in net earnings, before tax	[1]	(6)	0
Other comprehensive income (loss), before tax		1	(36)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax [Abstract]
Foreign currency translation adjustments, tax (expense) benefit		0	1
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect [Abstract]
Unrealized gains (losses) arising during the period, tax (expense) benefit		(5)	3
Reclassification adjustment for (gains) losses included in net earnings, tax (expense) benefit		0	0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax [Abstract]
Reclassification of prior service credit included in net earnings, tax (expense) benefit		2	0
Other comprehensive income (loss), tax (expense) benefit		(3)	4
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract]
Foreign currency translation adjustments, after-tax		(8)	(25)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Unrealized gains (losses) arising during the period, after-tax		8	(5)
Reclassification adjustment for (gains) losses included in net earnings, after-tax		2	(2)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax [Abstract]
Reclassification of prior service credit included in net earnings, after-tax		(4)	0
Other comprehensive income (loss), after tax		(2)	(32)
Total comprehensive income (loss), after-tax		290	162
Total comprehensive income (loss) attributable to noncontrolling interests		1	0
Total comprehensive income (loss) attributable to Campbell Soup Company		$ 289	$ 162

[1] This is included in the components of net periodic benefit costs (see Note 8 for additional details).