Fair Value Measurements Fair Value Measurements Narrative (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Jul. 31, 2016	Aug. 02, 2015	Feb. 01, 2015	Jul. 31, 2016	Aug. 02, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss				$ 106
Asset Impairment Charges			$ 11
Cash and Cash Equivalents, at Carrying Value	$ 74	$ 39		74	$ 39
Long-term Debt	2,755	2,539		2,755	2,539
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	74	39		74	39
Long-term Debt, Fair Value	2,949	2,623		2,949	2,623
Campbell Fresh [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss				106
Campbell Fresh [Member] | Bolthouse Farms carrot and carrot ingredients reporting unit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss	106
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	35
Campbell Fresh [Member] | Bolthouse Farms carrot and carrot ingredients reporting unit [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Fair Value Disclosure	202			202
Indefinite-lived Intangible Assets (Excluding Goodwill), Fair Value Disclosure	$ 68			68
Global Biscuits and Snacks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss				$ 0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		6			6
Global Biscuits and Snacks [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill), Fair Value Disclosure		$ 9			$ 9