Acquisitions and Divestitures (Allocation of Acquisition Costs to Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 16, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill	$ 1,524,929		$ 1,396,529
Akron Brass
Business Acquisition [Line Items]
Current assets, net of cash acquired		$ 51,887
Property, plant and equipment		10,332
Goodwill	119,100	119,131
Intangible assets	$ 92,100	92,100
Total assets acquired		273,450
Current liabilities		(6,531)
Deferred tax liability		(39,114)
Other noncurrent liabilities		(6,249)
Net assets acquired		$ 221,556