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Inventories (Details) (USD $) In Millions, unless otherwise specified	Oct. 28, 2011	Apr. 29, 2011
Inventory Disclosure [Abstract]
Finished goods	$ 1,149	$ 1,067
Work in process	299	263
Raw materials	392	365
Total	$ 1,840	$ 1,695

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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