Goodwill and Other Intangible Assets (Details) - USD ($)	1 Months Ended		3 Months Ended		12 Months Ended
	Oct. 31, 2018	Jul. 31, 2018	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Aug. 31, 2016
Goodwill [Roll Forward]
Goodwill, beginning of period					$ 690,223,000	$ 633,436,000
Acquisition-related					285,355,000	3,330,000
Foreign currency translation					(20,054,000)	53,457,000
Goodwill, end of period			$ 955,524,000		955,524,000	690,223,000	$ 633,436,000
Goodwill expected tax deductible amount			43,860,000		43,860,000
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment			894,803,000		894,803,000	727,803,000
Finite Lived Intangible Assets Foreign Currency Translation Adjustment			(17,157,000)		(17,157,000)	(11,972,000)
Finite-Lived Intangible Assets, Accumulated Amortization			(296,778,000)		(296,778,000)	(251,559,000)
Finite-Lived Intangible Assets, Gross			933,316,000		933,316,000	758,601,000
Revenue Sharing Program payments					5,800,000	0	0
Amortization of Intangible Assets					45,220,000	41,216,000	36,753,000
Intangible Assets, Future Amortization Expense
Estimated amortization of intangible assets, year 1			53,000,000		53,000,000
Estimated amortization of intangible assets, year 2			50,000,000		50,000,000
Estimated amortization of intangible assets, year 3			49,000,000		49,000,000
Estimated amortization of intangible assets, year 4			49,000,000		49,000,000
Estimated amortization of intangible assets, year 5			48,000,000		48,000,000
Gimatic
Goodwill [Roll Forward]
Acquisition-related			271,257,000
Goodwill, end of period	$ 271,257,000
Other Intangible Assets:
Intangible assets acquired			158,800,000
IGS
Goodwill [Roll Forward]
Acquisition-related				$ 14,098,000
Other Intangible Assets:
Intangible assets acquired		$ 15,300,000		$ 15,300,000
Customer Relationships [Member] | Gimatic
Other Intangible Assets:
Range of life (in years)	16 years
Intangible assets acquired	$ 107,900,000
Customer Relationships [Member] | IGS
Other Intangible Assets:
Range of life (in years)		16 years
Intangible assets acquired		$ 14,500,000
Revenue sharing programs [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment			299,500,000		299,500,000	293,700,000
Finite-Lived Intangible Assets, Accumulated Amortization			(121,957,000)		$ (121,957,000)	(108,075,000)
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	111,839,000
Finite-Lived Intangible Assets, Accumulated Amortization			(21,895,000)		$ (21,895,000)	(16,508,000)
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			338,366,000		$ 338,366,000	215,966,000
Finite-Lived Intangible Assets, Accumulated Amortization			(79,439,000)		$ (79,439,000)	(65,385,000)
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			125,852,000		$ 125,852,000	87,052,000
Finite-Lived Intangible Assets, Accumulated Amortization			(59,205,000)		$ (59,205,000)	(48,083,000)
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] | Gimatic
Other Intangible Assets:
Range of life (in years)	11 years
Intangible assets acquired	$ 38,800,000
Trademarks, Trade Names [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment			11,950,000		$ 11,950,000	11,950,000
Finite-Lived Intangible Assets, Accumulated Amortization			(10,731,000)		$ (10,731,000)	(10,349,000)
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			55,670,000		$ 55,670,000	42,770,000
Other [Member]
Other Intangible Assets:
Finite Lived Intangible Assets Before Foreign Currency Translation Adjustment			7,296,000		7,296,000	7,296,000
Finite-Lived Intangible Assets, Accumulated Amortization			(3,551,000)		$ (3,551,000)	(3,159,000)
Other [Member] | Maximum [Member]
Other Intangible Assets:
Range of life (in years)					15 years
Industrial [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period					$ 659,437,000	602,650,000
Acquisition-related					285,355,000	3,330,000
Foreign currency translation					(20,054,000)	53,457,000
Goodwill, end of period			924,738,000		924,738,000	659,437,000	602,650,000
Industrial [Member] | FOBOHA Business [Member]
Goodwill [Roll Forward]
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	$ 30,786,000
Trade Names [Member] | Gimatic
Other Intangible Assets:
Intangible assets acquired	$ 12,100,000
Trade Names [Member] | IGS
Other Intangible Assets:
Intangible assets acquired		$ 800,000