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Acquisitions - Pro Forma Financial Information, Nonrecurring Adjustments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 24, 2012	Jun. 30, 2013	Jun. 24, 2012
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Amortization of Intangible Assets	$ 9.0	$ 8.9	$ 18.3	$ 19.4
Share-based Compensation			3.9	2.3
Composite Engineering, Inc. \| Acquisition-related Costs [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Amortization of Intangible Assets		4.0		8.0
Share-based Compensation		$ 0.7		$ 1.4
Increase in weighted average common shares outstanding for shares issued and not already included in the weighted average common shares outstanding (in shares)		24.0		24.0

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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