Acquisitions, Divestitures and Licensing Transactions (Acquisitions Schedule of Purchase Price Allocation) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Sep. 19, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill	$ 916.9	$ 924.7		$ 270.6
Fairchild
Business Acquisition [Line Items]
Cash and cash equivalents		255.0
Receivables		227.3
Inventories		342.3
Other current assets		61.0
Property, plant and equipment		925.8
Goodwill		656.1	$ 656.1
Intangible assets		413.6	413.6
In-process research and development		134.2	$ 134.2
Other non-current assets		13.1
Total assets acquired		3,028.4
Accounts payable		79.4
Other current liabilities		168.1
Deferred tax liabilities		213.5
Other non-current liabilities		35.2
Total liabilities assumed		496.2
Net assets acquired		$ 2,532.2