Summary of Significant Accounting Policies (Details) (USD $) In Millions	12 Months Ended
Apr. 29, 2011	Apr. 30, 2010	Apr. 24, 2009
Inventory (Numeric)
Finished goods	$ 1,067	$ 896
Work in process	263	269
Raw materials	365	316
Total	1,695	1,481
PP&E (Numeric)
Land and land improvements	137	137
Buildings and leasehold improvements	1,489	1,427
Equipment	3,888	3,525
Construction in progress	303	269
Subtotal	5,817	5,358
Accumulated depreciation	(3,306)	(2,937)
Property, plant, and equipment, net	2,511	2,421
Depreciation	464	454	418
Intangible Assets (Numeric)
Finite Lived Intangible Assets Useful Life Word	from three to 20 years
Comprehensive Income & AOCI (Numeric)
Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest	3,179	2,997	2,153
Other Comprehensive Income, Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	(183)	(75)	320
Other Comprehensive Income, Defined Benefit Plans, Tax	3	(112)	(109)
Other Comprehensive Income, Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	130	35	(33)
Effect on Accumulated Other Comprehensive Income (Loss) Due to Change in Measurement Date, Tax	1
Earnings Per Share Numeric Disclosure [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	59	65	62
Senior Convertible Notes Due 2011 [Member]
Earnings Per Share Numeric Disclosure [Line Items]
Principal amount	$ 2,200

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Tax on the adjustment increasing (decreasing) accumulated other comprehensive income due to a change in the measurement date for a defined benefit pension and other postretirement plan in the initial application of the measurement provisions of FAS 158.

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The useful life of all finite-lived intangible assets. This may be stated as a fixed number (for example, 10 years) if all assets have the same useful life, or it can be stated in a range (for example, six to eight years) if there is a range of useful lives in the asset group.

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This element represents the carrying amount as of the balance sheet date of real estate held for productive use. This excludes land held for sale. This element also includes alterations to land which improves its potential for use. Generally consisting of items having limited lives, such as walkways, driveways, fences, and parking lots, such improvements are depreciated over the useful lives of the subject assets.

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The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Carrying amount as of the balance sheet date of long-lived, depreciable assets that include building structures held for productive use including any addition, improvement, or renovation to the structure, such as interior masonry, interior flooring, electrical, and plumbing.

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Carrying amount at the balance sheet date of long-lived asset under construction that include construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service.

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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Tax effects of the net changes to accumulated comprehensive income during the period related to benefit plans.

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Tax effect on the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.

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Tax effect on gross appreciation or the gross loss in value of the total of unsold securities during the period being reported on.

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Carrying amount at the balance sheet date for long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, physical structures, machinery, vehicles, furniture, computer equipment, construction in progress, and similar items. Amount does not include depreciation.

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Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, and production equipment.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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