Balance Sheet Details (Property And Equipment, Net) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Apr. 27, 2012	Apr. 29, 2011
Balance Sheet Details [Abstract]
Land	$ 247.6	$ 204.7
Buildings and building improvements	417.9	406.2
Leasehold improvements	96.5	79.3
Computer, production, engineering and other equipment	638.1	475.5
Software	381.6	270.4
Furniture and fixtures	71.7	61.5
Construction-in-progress	107.1	91.9
Property and equipment, gross	1,960.5	1,589.5
Accumulated depreciation and amortization	(823.3)	(677.9)
Property and equipment, net, Total	1,137.2	911.6
Purchase price of the facilities	80.0
Estimated fair value of the facilities acquired	$ 44.3

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Estimated Fair Value Of The Facilities Acquired

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- Definition

The cash outflow for acquisition of land and buildings for use; excludes purchases held as inventory or as investments.

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- Definition

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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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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

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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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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 of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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