Goodwill and Other Intangible Assets - Intangible Assets and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 2,303,951		$ 2,129,232
Accumulated amortization	926,212		881,603
Amortization expense	43,574	$ 39,974
Intangible assets, net	1,543,397		1,413,223
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	172,554		150,926
Accumulated amortization	49,245		45,536
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	155,225		150,570
Accumulated amortization	117,441		112,399
Customer Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,663,762		1,567,048
Accumulated amortization	628,709		595,635
Unpatented Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	133,362		137,919
Accumulated amortization	55,971		56,495
Drawings and Manuals [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	34,701		34,232
Accumulated amortization	16,757		15,760
Distributor Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	120,957		64,614
Accumulated amortization	39,592		37,610
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	23,390		23,923
Accumulated amortization	$ 18,497		$ 18,168