Fair Value Measurements (Fair Value Measurement Of Assets And Liabilities) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 28, 2013		Jul. 29, 2012		Jul. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 36		$ 3		$ 3
Measured On Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	32		45
Total liabilities at fair value	159		192
Measured On Recurring Basis [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	1	[1]	13	[1]
Measured On Recurring Basis [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	23	[1]	2	[1]
Measured On Recurring Basis [Member] | Foreign Exchange Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	4		2	[2]
Total liabilities at fair value	6	[2]
Measured On Recurring Basis [Member] | Cross-Currency Swap Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value		[3]	19	[3]
Total liabilities at fair value	24	[3]	79	[3]
Measured On Recurring Basis [Member] | Commodity Derivative Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2	[4]	8	[4]
Total liabilities at fair value	6	[4]	4	[4]
Measured On Recurring Basis [Member] | Deferred Compensation Derivative Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2	[5]	1	[5]
Measured On Recurring Basis [Member] | Deferred Compensation Obligation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	123	[6]	109	[6]
Fair Value, Inputs, Level 1 [Member] | Measured On Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2		5
Total liabilities at fair value	128		111
Fair Value, Inputs, Level 1 [Member] | Measured On Recurring Basis [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Fair Value, Inputs, Level 1 [Member] | Measured On Recurring Basis [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Fair Value, Inputs, Level 1 [Member] | Measured On Recurring Basis [Member] | Foreign Exchange Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Total liabilities at fair value
Fair Value, Inputs, Level 1 [Member] | Measured On Recurring Basis [Member] | Cross-Currency Swap Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Total liabilities at fair value
Fair Value, Inputs, Level 1 [Member] | Measured On Recurring Basis [Member] | Commodity Derivative Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2	[4]	5	[4]
Total liabilities at fair value	5	[4]	2	[4]
Fair Value, Inputs, Level 1 [Member] | Measured On Recurring Basis [Member] | Deferred Compensation Derivative Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Fair Value, Inputs, Level 1 [Member] | Measured On Recurring Basis [Member] | Deferred Compensation Obligation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value	123	[6]	109	[6]
Fair Value, Inputs, Level 2 [Member] | Measured On Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	30		40
Total liabilities at fair value	31		81
Fair Value, Inputs, Level 2 [Member] | Measured On Recurring Basis [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	1	[1]	13	[1]
Fair Value, Inputs, Level 2 [Member] | Measured On Recurring Basis [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	23	[1]	2	[1]
Fair Value, Inputs, Level 2 [Member] | Measured On Recurring Basis [Member] | Foreign Exchange Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	4		2	[2]
Total liabilities at fair value	6	[2]
Fair Value, Inputs, Level 2 [Member] | Measured On Recurring Basis [Member] | Cross-Currency Swap Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value		[3]	19	[3]
Total liabilities at fair value	24	[3]	79	[3]
Fair Value, Inputs, Level 2 [Member] | Measured On Recurring Basis [Member] | Commodity Derivative Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value		[4]	3	[4]
Total liabilities at fair value	1	[4]	2	[4]
Fair Value, Inputs, Level 2 [Member] | Measured On Recurring Basis [Member] | Deferred Compensation Derivative Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	2	[5]	1	[5]
Fair Value, Inputs, Level 2 [Member] | Measured On Recurring Basis [Member] | Deferred Compensation Obligation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value
Fair Value, Inputs, Level 3 [Member] | Measured On Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Total liabilities at fair value
Fair Value, Inputs, Level 3 [Member] | Measured On Recurring Basis [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Fair Value, Inputs, Level 3 [Member] | Measured On Recurring Basis [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Fair Value, Inputs, Level 3 [Member] | Measured On Recurring Basis [Member] | Foreign Exchange Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Total liabilities at fair value
Fair Value, Inputs, Level 3 [Member] | Measured On Recurring Basis [Member] | Cross-Currency Swap Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Total liabilities at fair value
Fair Value, Inputs, Level 3 [Member] | Measured On Recurring Basis [Member] | Commodity Derivative Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Total liabilities at fair value
Fair Value, Inputs, Level 3 [Member] | Measured On Recurring Basis [Member] | Deferred Compensation Derivative Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value
Fair Value, Inputs, Level 3 [Member] | Measured On Recurring Basis [Member] | Deferred Compensation Obligation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value
Segment, Discontinued Operations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	36
Segment, Discontinued Operations [Member] | Trademarks Royco [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	23		0
Segment, Discontinued Operations [Member] | Traemarks Heisse Tasse [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	4		0
Segment, Discontinued Operations [Member] | Trademarks Bla Band [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	1
Segment, Discontinued Operations [Member] | Trademarks Isomitta [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	8		0
Segment, Discontinued Operations [Member] | Fair Value, Measurements, Nonrecurring [Member] | Trademarks Bla Band [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			3
Segment, Discontinued Operations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Trademarks Royco [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	53
Segment, Discontinued Operations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Traemarks Heisse Tasse [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	6
Segment, Discontinued Operations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Trademarks Bla Band [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	19		20
Segment, Discontinued Operations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Trademarks Isomitta [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 4

[1] Based on LIBOR swap rates.

[2] Based on observable market transactions of spot currency rates and forward rates.

[3] Based on observable local benchmarks for currency and interest rates.

[4] Based on quoted futures exchanges and on observable prices of futures and options transactions in the marketplace.

[5] Based on LIBOR and equity index swap rates.

[6] Based on the fair value of the participants’ investments.