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Retirement Benefits (Tables)

6 Months Ended

Mar. 31, 2019

Defined Benefit Plan Disclosure [Line Items]

Schedule of Amount of Expense Associated with Defined Contribution Plans



		Three-Months Ended						Six-Months Ended
		March 31,						March 31,
		2019			2018			2019			2018
Company costs		$	9,086		$	8,716		$	17,457		$	16,595



Schedule of Estimated Remaining Cash Contributions



Retirement pension benefits:
United States		$	-
United Kingdom			345
Japan			-
Germany			418
Other postretirement benefits			2,538



Schedule of Amounts of Contributions Associated with Multiemployer Defined Benefit Plans



		Three-Months Ended						Six-Months Ended
		March 31,						March 31,
		2019			2018			2019			2018
Company contributions		$	61		$	87		$	138		$	167



Defined Benefit Pension Plan [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Periodic Benefit Costs



		Three-Months Ended March 31,
		United States						Other Countries						Total
		2019			2018			2019			2018			2019			2018
Service cost		$	362		$	411		$	512		$	165		$	874		$	576
Interest cost			1,596			1,501			485			344			2,081			1,845
Expected return on plan assets			(2,997)			(2,903)			(672)			(717)			(3,669)			(3,620)
Amortization of:
Net actuarial loss			155			149			73			75			228			224
Prior service cost			178			178			-			-			178			178
Net periodic retirement pension (benefit) cost		$	(706)		$	(664)		$	398		$	(133)		$	(308)		$	(797)
Contributions paid		$	-		$	-		$	509		$	119		$	509		$	119


		Six-Months Ended March 31,
		United States						Other Countries						Total
		2019			2018			2019			2018			2019			2018
Service cost		$	725		$	822		$	1,024		$	323		$	1,749		$	1,145
Interest cost			3,192			3,002			965			673			4,157			3,675
Expected return on plan assets			(5,993)			(5,807)			(1,334)			(1,403)			(7,327)			(7,210)
Amortization of:
Net actuarial loss			309			299			144			147			453			446
Prior service cost			355			355			-			-			355			355
Net periodic retirement pension (benefit) cost		$	(1,412)		$	(1,329)		$	799		$	(260)		$	(613)		$	(1,589)
Contributions paid		$	-		$	-		$	1,063		$	431		$	1,063		$	431



Other Postretirement Benefit Plans [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Periodic Benefit Costs



		Three-Months Ended						Six-Months Ended
		March 31,						March 31,
		2019			2018			2019			2018
Service cost		$	2		$	2		$	3		$	4
Interest cost			289			291			577			583
Amortization of:
Net actuarial loss			14			24			28			48
Prior service benefit			(2)			(39)			(3)			(79)
Curtailment gain			-			-			-			(330)
Net periodic other postretirement cost		$	303		$	278		$	605		$	226
Contributions paid		$	704		$	1,009		$	1,077		$	1,235



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Tabular disclosure of defined contribution pension plans or defined contribution other postretirement plans, separately for pension plans and other postretirement benefit plans.

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