Balance Sheet Detail (Property And Equipment) (Details) (USD $) In Millions, unless otherwise specified	Oct. 28, 2011	Apr. 29, 2011
Balance Sheet Detail [Abstract]
Land	$ 206.1	$ 204.7
Buildings and building improvements	417.3	406.2
Leasehold improvements	82.5	79.3
Computers, production, engineering and other equipment	585.5	475.5
Software	286.8	270.4
Furniture and fixtures	69.0	61.5
Construction-in-progress	156.3	91.9
Property and equipment, gross	1,803.5	1,589.5
Accumulated depreciation and amortization	(757.4)	(677.9)
Total property and equipment	$ 1,046.1	$ 911.6

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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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Gross 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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- Definition

The gross amount of capitalized computer software costs as of the balance sheet date.

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- Definition

Gross amount, at the balance sheet date, of long-lived assets 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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- Definition

Gross amount, at the balance sheet date, of long-lived, depreciable assets commonly used in offices and stores. Examples include desks, chairs, and store fixtures.

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Carrying amount as of the balance sheet date of real estate held for productive use. This excludes land held for sale.

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Gross amount, at the balance sheet date, of long-lived, depreciable assets that are an addition or improvement to assets held under lease arrangement.

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Gross amount, as of the balance sheet date, of long-lived, depreciable assets used in the production process to produce goods and services.

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Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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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, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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