Goodwill and Other Intangible Assets (Details) - USD ($)	1 Months Ended	12 Months Ended
	Aug. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Goodwill, beginning of period		$ 633,436,000	$ 587,992,000
Acquisition-related		3,330,000	73,688,000
Foreign currency translation		53,457,000	(28,244,000)
Goodwill, end of period		690,223,000	633,436,000	$ 587,992,000
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment		741,058,000	737,358,000
Finite Lived Intangible Assets Foreign Currency Translation Adjustment		(11,972,000)	(34,272,000)
Finite-Lived Intangible Assets, Accumulated Amortization		(264,814,000)	(223,598,000)
Finite-Lived Intangible Assets, Gross		771,856,000	745,856,000
Intangible Assets, Future Amortization Expense
Amortization of intangible assets expected in 2018		41,000,000
Amortization of intangible assets expected in 2019		41,000,000
Amortization of intangible assets expected in 2020		37,000,000
Amortization of intangible assets expected in 2021		37,000,000
Amortization of intangible assets expected in 2022		36,000,000
Goodwill expected tax deductible amount		43,860,000
Amortization of Intangible Assets		41,216,000	36,753,000	38,502,000
FOBOHA Business [Member]
Goodwill [Roll Forward]
Goodwill, end of period	$ 75,574,000
Intangible Assets, Future Amortization Expense
Other intangible assets	39,800,000
Customer Relationships [Member] | FOBOHA Business [Member]
Intangible Assets, Future Amortization Expense
Other intangible assets	$ 20,700,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	16 years
Revenue sharing programs [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment		293,700,000	293,700,000
Finite-Lived Intangible Assets, Accumulated Amortization		$ (108,075,000)	(95,701,000)
Revenue sharing programs [Member] | Maximum [Member]
Other Intangible Assets:
Range of life (in years)		30 years
Component Repair Program [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment		$ 111,839,000	111,839,000
Finite-Lived Intangible Assets, Accumulated Amortization		$ (16,508,000)	(10,497,000)
Component Repair Program [Member] | Maximum [Member]
Other Intangible Assets:
Range of life (in years)		30 years
Customer lists/relationships [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment		$ 215,966,000	215,266,000
Finite-Lived Intangible Assets, Accumulated Amortization		$ (65,385,000)	(53,198,000)
Customer lists/relationships [Member] | Minimum [Member]
Other Intangible Assets:
Range of life (in years)		10 years
Customer lists/relationships [Member] | Maximum [Member]
Other Intangible Assets:
Range of life (in years)		16 years
Patents And Technology [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment		$ 87,052,000	84,052,000
Finite-Lived Intangible Assets, Accumulated Amortization		$ (48,083,000)	(37,897,000)
Patents And Technology [Member] | Minimum [Member]
Other Intangible Assets:
Range of life (in years)		4 years
Patents And Technology [Member] | Maximum [Member]
Other Intangible Assets:
Range of life (in years)		14 years
Patents And Technology [Member] | FOBOHA Business [Member]
Intangible Assets, Future Amortization Expense
Other intangible assets	$ 14,700,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	7 years
Trademarks, Trade Names [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment		$ 11,950,000	11,950,000
Finite-Lived Intangible Assets, Accumulated Amortization		$ (10,349,000)	(9,967,000)
Trademarks, Trade Names [Member] | Minimum [Member]
Other Intangible Assets:
Range of life (in years)		10 years
Trademarks, Trade Names [Member] | Maximum [Member]
Other Intangible Assets:
Range of life (in years)		30 years
Unamoritized Trade Name [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment		$ 42,770,000	42,770,000
Unamoritized Trade Name [Member] | FOBOHA Business [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment	$ 4,400,000
Other [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment		20,551,000	20,551,000
Finite-Lived Intangible Assets, Accumulated Amortization		$ (16,414,000)	(16,338,000)
Other [Member] | Maximum [Member]
Other Intangible Assets:
Range of life (in years)		15 years
Industrial [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period		$ 602,650,000	557,206,000
Acquisition-related		3,330,000	73,688,000
Foreign currency translation		53,457,000	(28,244,000)
Goodwill, end of period		659,437,000	602,650,000	557,206,000
Industrial [Member] | FOBOHA Business [Member]
Intangible Assets, Future Amortization Expense
Goodwill expected tax deductible amount	$ 0
Aerospace [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period		30,786,000	30,786,000
Acquisition-related		0	0
Foreign currency translation		0	0
Goodwill, end of period		$ 30,786,000	$ 30,786,000	$ 30,786,000