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Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipments (Detail) (USD $) In Millions, unless otherwise specified				12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012	Sep. 27, 2014 Building and Improvements [Member] Minimum [Member]	Sep. 27, 2014 Building and Improvements [Member] Maximum [Member]	Sep. 27, 2014 Equipment and Software [Member] Minimum [Member]	Sep. 27, 2014 Equipment and Software [Member] Maximum [Member]	Sep. 27, 2014 Equipment Under Customer Usage Agreements [Member] Minimum [Member]	Sep. 27, 2014 Equipment Under Customer Usage Agreements [Member] Maximum [Member]	Sep. 27, 2014 Furniture and Fixtures [Member] Minimum [Member]	Sep. 27, 2014 Furniture and Fixtures [Member] Maximum [Member]	Sep. 27, 2014 Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Manufacturing Equipment And Software	$ 342.5	$ 318.5
Equipment Under Customer Usage Agreements	285.2	275.7
Buildings and Improvements, Gross	176.9	171.5
Leasehold Improvements, Gross	63.2	68.1
Land	51.6	51.6
Furniture and Fixtures, Gross	16.3	22.6
Property, Plant and Equipment, Gross	935.7	908.0
Less - accumulated depreciation and amortization	(473.8)	(416.5)
Property, plant and equipment, net	$ 461.9	$ 491.5	$ 508.0
Property, plant and equipment, estimated useful life				35 years	40 years	3 years	10 years	3 years	8 years	5 years	7 years
Property, plant and equipment, estimated useful life												Shorter of the Original Term of Lease or Estimated Useful Life

X

- Definition

Gross amount at the balance sheet date of long-lived, depreciable asset that are equipment placed at customer locations for which title is not transferred to the Company's customers.

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Gross amount as of the balance sheet date of long-lived, depreciable assets that include manufacturing and other equipment with finite lives used to produce goods and services, and computer equipment and software.

+ References

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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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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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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Amount before accumulated depreciation, depletion and amortization of 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, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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