Acquisitions (Pro Forma) (Details) (2GIG Technologies, Inc. [Member], USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 30, 2013	Mar. 31, 2012
2GIG Technologies, Inc. [Member]
Business Acquisition [Line Items]
Net sales	$ 551.1	$ 527.8
Operating earnings	11.7	17.9
Net loss	(11.1)	(6.0)
Basic earnings (loss) per share	$ (0.72)	$ (0.40)
Diluted earnings (loss) per share	$ (0.72)	$ (0.40)
Depreciation & amortization expense	$ 23.6	$ 24.8

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

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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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