Acquisitions, Disposition and Exit of Joint Venture (Details) $ in Thousands, € in Millions					3 Months Ended									12 Months Ended
	Jan. 07, 2015 USD ($)	Jan. 07, 2015 EUR (€)	Dec. 10, 2013 USD ($)	Dec. 10, 2013 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Nov. 30, 2014 EUR (€)	Dec. 31, 2013 USD ($)
Assets Acquired and Liabilities Assumed
Goodwill					$ 1,223,986				$ 1,067,255				$ 1,107,551	$ 1,223,986	$ 1,067,255		$ 1,107,551
Sales to external customers					1,287,700	$ 1,096,500	$ 1,162,200	$ 1,014,600	$ 1,381,400	$ 1,204,000	$ 1,224,400	$ 1,068,100		4,561,030	4,877,885		4,954,619
Proceeds from sale of business, net of cash divested														0	$ 46,805		$ 0
Business Acquisition, Effective Date of Acquisition			Dec. 10, 2013
SIHI Group B.V.
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Acquisition, purchase price	$ 341,500	€ 286.7
Cash paid for acquisition	110,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	255,000
Assets Acquired and Liabilities Assumed
Accounts receivable	59,300
Inventories	74,000
Prepaid expenses and other	17,700
Current assets	151,000
Intangible assets	78,600
Property, plant and equipment	94,500
Long-term deferred tax asset	11,700
Investments in affiliates	7,300
Total assets	343,100
Current liabilities	(88,000)
Noncurrent liabilities	(114,700)
Net assets	140,400
Goodwill	201,100
Purchase price, net of cash acquired of $23.4	341,500
Cash Acquired	23,400
Acquired finite lived intangible asset, weighted average useful life				9 years
Sales to external customers														294,000
Business Acquisition Impact On Operating Income														(39,500)
Sales | €																€ 270.0
Innovative Mag-Drive, LLC (Innomag)
Business Acquisition [Line Items]
Acquisition, purchase price													78,700
Cash paid for acquisition													$ 67,500
Assets Acquired and Liabilities Assumed
Percent of business acquired			100.00%	100.00%
Contingent payment, based on performance			$ 11,200	$ 11,200
Contingent consideration recorded			$ 7,500	$ 7,500	$ 700									$ 700
Innovative Mag-Drive, LLC (Innomag) | Minimum
Assets Acquired and Liabilities Assumed
Business Combinations, Performance Metrics, Period									2 years
Innovative Mag-Drive, LLC (Innomag) | Maximum
Assets Acquired and Liabilities Assumed
Business Combinations, Performance Metrics, Period									5 years
Business Combination, Consideration Transferred Period, Contingent on Performance									4 months
Trademarks | SIHI Group B.V.
Assets Acquired and Liabilities Assumed
Intangible assets	20,900
Existing customer relationships | SIHI Group B.V.
Assets Acquired and Liabilities Assumed
Intangible assets	$ 45,300
Acquired finite lived intangible asset, weighted average useful life	10 years	10 years
Backlog | SIHI Group B.V.
Assets Acquired and Liabilities Assumed
Intangible assets	$ 8,500
Acquired finite lived intangible asset, weighted average useful life	1 year	1 year
Engineering drawings and other | SIHI Group B.V.
Assets Acquired and Liabilities Assumed
Intangible assets	$ 3,900
Acquired finite lived intangible asset, weighted average useful life	10 years	10 years
Naval OY
Assets Acquired and Liabilities Assumed
Proceeds from sale of business, net of cash divested												46,800
Gain (Loss) on Disposition of Business												13,400
Disposal Group, Including Discontinued Operation, Revenue												$ 8,200