Supplemental Financial Statement Data (Schedule of Balance Sheets) (Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 29, 2018	Jul. 30, 2017	Jul. 31, 2016
Receivables [Abstract]
Customer accounts receivable		$ 734	$ 561
Allowances		(20)	(11)
Accounts receivable, net current		714	550
Other receivables		71	55
Accounts receivable, net		785	605
Inventory, Net [Abstract]
Inventory, raw materials, containers and supplies		478	377
Inventory, finished products		721	525
Inventories		1,199	902
Prepaid Expense and Other Assets, Current [Abstract]
Derivative Asset, Current		10	9
Other Assets, Miscellaneous, Current		76	65
Other current assets		86	74
Property, Plant and Equipment, Net [Abstract]
Land		122	64
Buildings and Improvements, Gross		1,870	1,557
Machinery and Equipment, Gross		4,751	4,243
Construction in Progress, Gross		211	179
Property, Plant and Equipment, Gross		6,954	6,043
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	[1]	(3,721)	(3,589)
Plant assets, net of depreciation		3,233	2,454	$ 2,407
Depreciation		360	299	$ 288
Other Assets, Noncurrent [Abstract]
Investments		92	69
Deferred Taxes		30	36
Pensions		61	8
Other Assets, Miscellaneous, Noncurrent		41	26
Other assets		224	139
Other Liabilities, Current [Abstract]
Employee-related Liabilities, Current		220	241
Derivative Liability, Current		5	43
Accrued Marketing Costs, Current		189	131
Interest Payable, Current		103	34
Restructuring Reserve, Current		22	24
Other Accrued Liabilities, Current		137	88
Accrued liabilities		676	561
Other Liabilities, Noncurrent [Abstract]
Liability, Defined Benefit Pension Plan, Noncurrent		150	261
Deferred Compensation Liability, Noncurrent		90	96
Liability, Other Retirement Benefits, Noncurrent		206	247
Liability, Transition Tax On Unremitted Foreign Earnings		7	0
Liability, Uncertain Tax Positions, Noncurrent		22	34
Restructuring Reserve, Noncurrent		24	2
Other Accrued Liabilities, Noncurrent		70	57
Other liabilities		$ 569	$ 697
Building [Member] | Minimum [Member]
Property, Plant and Equipment, Net [Abstract]
Property, Plant and Equipment, Useful Life		7 years
Building [Member] | Maximum [Member]
Property, Plant and Equipment, Net [Abstract]
Property, Plant and Equipment, Useful Life		45 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Net [Abstract]
Property, Plant and Equipment, Useful Life		2 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Net [Abstract]
Property, Plant and Equipment, Useful Life		20 years

[1] Depreciation expense was $360 in 2018, $299 in 2017 and $288 in 2016. Buildings are depreciated over periods ranging from 7 to 45 years. Machinery and equipment are depreciated over periods generally ranging from 2 to 20 years.