This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

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Amount of increase (decrease) in loss contingency liability.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Amount of accelerated depreciation charged against earnings associated with exit from or disposal of business activities or restructuring plan.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Schedule of Selected Operating Segment Financial Information (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 27, 2015	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Segment Reporting Information [Line Items]
Restructuring, impairments, and other costs									$ (47.6)	$ (49.8)	$ (15.9)
Acquisition-related costs									6.5
Selling, general and administrative expense									(205.8)	(215.9)	(205.7)
Release of (charge for) litigation										(4.4)	12.6
Corporate research and development expense									(162.6)	(165.8)	(171.6)
Revenue	$ 317.2	$ 342.1	$ 355.2	$ 355.7	$ 336.6	$ 381.1	$ 371.6	$ 344.1	1,370.2	1,433.4	1,405.4
Operating income									6.3	19.1	20.4
Other expense, net									5.4	6.5	9.2
Income before income taxes									0.9	12.6	11.2
Corporate
Segment Reporting Information [Line Items]
Restructuring, impairments, and other costs									(47.6)	(49.8)	(15.9)
Acquisition-related costs									(6.5)
Accelerated depreciation on assets related to factory closures									(8.7)	(6.5)	(8.7)
Inventory write-offs associated with factory closures									(5.5)
Selling, general and administrative expense									(182.7)	(190.7)	(171.5)
Release of (charge for) litigation										(4.4)	12.6
Corporate research and development expense									(14.7)	(15.4)	(7.5)
SPS \| Operating Segments
Segment Reporting Information [Line Items]
Revenue									798.9	838.2	793.7
Operating income									172.1	181.8	143.6
APSS \| Operating Segments
Segment Reporting Information [Line Items]
Revenue									385.2	399.1	413.8
Operating income									58.7	60.3	31.6
SPG \| Operating Segments
Segment Reporting Information [Line Items]
Revenue									186.1	196.1	197.9
Operating income									$ 41.2	$ 43.8	$ 36.2