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Acquisitions and Dispositions (Narrative) (Details) - USD ($) $ in Millions			9 Months Ended
	Apr. 01, 2015	Apr. 28, 2014	Sep. 30, 2015	Sep. 30, 2014
Business Acquisition [Line Items]
Proceeds from sale of a business			$ 23.0	$ 0.0
Packaging | Crockett Packaging
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity		$ 21.2
Hexacomb Europe and Mexico [Member] | Packaging
Business Acquisition [Line Items]
Proceeds from sale of a business	$ 23.0

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