Intangible Assets, Net (Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Oct. 01, 2018	[1]	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross, Total	$ 983,266			$ 1,016,456
Accumulated Amortization of Finite-Lived Intangible	(371,274)			(315,573)
Net Carrying Amount - Finite-Lived Intangible	548,525
Intangible Assets, Net, Total	611,992	$ 698,364		700,883	[1]
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	63,467			67,335
Accumulated Amortization of Finite-Lived Intangible
Customer Relationships And Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	689,366			711,563
Accumulated Amortization of Finite-Lived Intangible	(225,981)			(202,575)
Net Carrying Amount - Finite-Lived Intangible	463,385			508,988
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	19,201			19,448
Accumulated Amortization of Finite-Lived Intangible	(18,705)			(18,587)
Net Carrying Amount - Finite-Lived Intangible	496			861
Process Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	169,191			173,526
Accumulated Amortization of Finite-Lived Intangible	(84,839)			(75,247)
Net Carrying Amount - Finite-Lived Intangible	84,352			98,279
Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	40,500			42,955
Accumulated Amortization of Finite-Lived Intangible	(40,500)			(18,006)
Net Carrying Amount - Finite-Lived Intangible				24,949
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	1,541			1,629
Accumulated Amortization of Finite-Lived Intangible	(1,249)			(1,158)
Net Carrying Amount - Finite-Lived Intangible	292			471
Aerospace [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross, Total	358,054			358,055
Accumulated Amortization of Finite-Lived Intangible	(241,908)			(221,593)
Intangible Assets, Net, Total	116,146			136,462
Aerospace [Member] | Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets
Accumulated Amortization of Finite-Lived Intangible
Aerospace [Member] | Customer Relationships And Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	281,683			281,683
Accumulated Amortization of Finite-Lived Intangible	(181,995)			(166,719)
Net Carrying Amount - Finite-Lived Intangible	99,688			114,964
Aerospace [Member] | Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible
Accumulated Amortization of Finite-Lived Intangible
Net Carrying Amount - Finite-Lived Intangible
Aerospace [Member] | Process Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	76,371			76,372
Accumulated Amortization of Finite-Lived Intangible	(59,913)			(54,874)
Net Carrying Amount - Finite-Lived Intangible	16,458			21,498
Aerospace [Member] | Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible
Accumulated Amortization of Finite-Lived Intangible
Net Carrying Amount - Finite-Lived Intangible
Aerospace [Member] | Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible
Accumulated Amortization of Finite-Lived Intangible
Net Carrying Amount - Finite-Lived Intangible
Industrial [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross, Total	625,212			658,401
Accumulated Amortization of Finite-Lived Intangible	(129,366)			(93,980)
Intangible Assets, Net, Total	495,846			564,421
Industrial [Member] | Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	63,467			67,335
Accumulated Amortization of Finite-Lived Intangible
Industrial [Member] | Customer Relationships And Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	407,683			429,880
Accumulated Amortization of Finite-Lived Intangible	(43,986)			(35,856)
Net Carrying Amount - Finite-Lived Intangible	363,697			394,024
Industrial [Member] | Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	19,201			19,448
Accumulated Amortization of Finite-Lived Intangible	(18,705)			(18,587)
Net Carrying Amount - Finite-Lived Intangible	496			861
Industrial [Member] | Process Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	92,820			97,154
Accumulated Amortization of Finite-Lived Intangible	(24,926)			(20,373)
Net Carrying Amount - Finite-Lived Intangible	67,894			76,781
Industrial [Member] | Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	40,500			42,955
Accumulated Amortization of Finite-Lived Intangible	(40,500)			(18,006)
Net Carrying Amount - Finite-Lived Intangible				24,949
Industrial [Member] | Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value - Finite-Lived Intangible	1,541			1,629
Accumulated Amortization of Finite-Lived Intangible	(1,249)			(1,158)
Net Carrying Amount - Finite-Lived Intangible	$ 292			$ 471

[1] The net book value of the backlog and customer relationships and contracts intangible assets was adjusted concurrent with the change in the timing of the associated revenue, resulting in a reduction in the net book value of these assets as of the date of adoption.