Acquisitions - Pro Forma (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 29, 2014	Mar. 30, 2013	Dec. 31, 2013
2GIG Technologies, Inc. [Member]
Business Acquisition [Line Items]
Net sales		$ 551.1
Operating earnings		9.0
Net loss		(12.7)
Basic loss per share (in dollars per share)		$ (0.83)
Diluted loss per share (in dollars per share)		$ (0.83)
Depreciation & amortization expense		26.1
Reznor [Member]
Business Acquisition [Line Items]
Net sales	592.2	559.3	2,447.1
Operating earnings	19.2	6.5	99.0
Net loss	(5.3)	(15.0)	(5.6)
Basic loss per share (in dollars per share)	$ (0.34)	$ (0.98)	$ (0.36)
Diluted loss per share (in dollars per share)	$ (0.34)	$ (0.98)	$ (0.36)
Depreciation & amortization expense	$ 28.3	$ 26.7	$ 116.0

Business Acquisition, Pro Forma Amortization and Depreciation Expense

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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