Acquisitions and Dispositions of Businesses (Assets Acquired and Liabilities Assumed) (Details 1) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 1,301,484	$ 1,299,710
Pension and other post retirement benefits liabilities		(59,100)
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Accounts receivable		12,502
Inventory		25,253
Property, plant and equipment		29,921
Goodwill		143,149
Indefinite-lived intangible assets		33,800
Amortized intangible assets		170,658
Other assets		1,880
Pension and other post retirement benefits liabilities		(59,116)
Other liabilities		(12,177)
Deferred income tax liability		(37,289)
Redeemable noncontrolling interest		(3,666)
Aggregate purchase price, net of cash acquired		$ 304,915