Acquisitions and Strategic Investments (2015 Copac Global Packaging, Inc. Acquisition) (Details) - USD ($) $ in Millions	Apr. 14, 2015	Jun. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill		$ 775.2	$ 775.5
Copac [Member]
Business Acquisition [Line Items]
Payments to acquire businesses, gross	$ 60.2
Cash acquired from acquisition	0.9
Payments to acquire businesses, net of cash acquired	59.3
Identifiable intangible assets	$ 30.6
Weighted average useful life of identifiable intangible assets	6 years
Goodwill	$ 23.9