Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Jul. 31, 2016	Aug. 02, 2015	Aug. 03, 2014
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax [Abstract]
Foreign currency translation adjustments, before tax		$ 45	$ (312)	$ (5)
Reclassification of currency translation adjustments realized upon disposal of business, before tax		0	0	(22)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax [Abstract]
Unrealized gains (losses) arising during period, before Tax		(45)	(5)	(12)
Reclassification adjustment for (gains) losses included in net earnings, before tax		(9)	(1)	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax, [Abstract]
Prior service credit arising during the period, before tax		93	0	0
Reclassification of prior service credit included in net earnings, before tax	[1]	(1)	(2)	(2)
Other comprehensive income (loss), before tax		83	(320)	(41)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax [Abstract]
Foreign currency translation adjustments, tax (expense) benefit		0	1	(1)
Reclassification of currency translation adjustments realized upon disposal of business, tax (expense) benefit		0	0	3
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect [Abstract]
Unrealized gains (losses) arising during the period, tax (expense) benefit		16	3	4
Reclassification adjustment for (gains) losses included in net earnings, tax (expense) benefit		2	1	0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax [Abstract]
Prior service credit arising during the period, tax		(34)	0	0
Reclassification of prior service credit included in net earnings, tax (expense) benefit		0	1	1
Other comprehensive income (loss), tax (expense) benefit		(16)	6	7
Other comprehensive income (loss), after-tax [Abstract]
Net earnings		563	666	855
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract]
Foreign currency translation adjustments, after-tax		45	(311)	(6)
Reclassification of currency translation adjustments realized upon disposal of business, after-tax		0	0	(19)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Unrealized gains (losses) arising during the period, after-tax		(29)	(2)	(8)
Reclassification adjustment for (gains) losses included in net earnings, after-tax		(7)	0	0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax [Abstract]
Prior service credit arising during the period, net of tax		59	0	0
Reclassification of prior service credit included in net earnings, after-tax		(1)	(1)	(1)
Other comprehensive income (loss), after tax		67	(314)	(34)
Total comprehensive income (loss), after-tax		630	352	821
Total comprehensive income (loss) attributable to noncontrolling interests		3	(1)	(10)
Total comprehensive income (loss) attributable to Campbell Soup Company		$ 627	$ 353	$ 831

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