Pension and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Net Periodic Pension and Other Postretirement Benefit Cost

Net periodic pension and other postretirement benefit cost for the plans included the following:

	Three months ended June 30,
	Pension				Other Postretirement
	2020		2019		2020		2019
Service cost	$	2,170	$	2,000	$	64	$	61
Interest cost *	1,933		2,301		140		180
Expected return on plan assets *	(2,232)		(2,596)		—		—
Amortization:
Prior service cost	(47)		(46)		(23)		(49)
Net actuarial loss (gain) *	2,386		1,081		—		(15)
Net benefit cost	$	4,210	$	2,740	$	181	$	177

	Nine months ended June 30,
	Pension				Other Postretirement
	2020		2019		2020		2019
Service cost	$	6,510	$	6,000	$	192	$	183
Interest cost *	5,799		6,903		420		540
Expected return on plan assets *	(6,696)		(7,788)		—		—
Amortization:
Prior service cost	(141)		(138)		(69)		(147)
Net actuarial loss (gain) *	7,159		3,242		—		(45)
Net benefit cost	$	12,631	$	8,219	$	543	$	531

* Non-service components of pension and postretirement expense are included in other income (deductions), net.

Contributions Made and Anticipated for the Current Fiscal Year

Contributions made and anticipated for fiscal year 2020 are as follows:

Contributions	Pension		Other Postretirement
Contributions during the nine months ended June 30, 2020:
Supplemental retirement plan	$	589	$	—
Other postretirement plan	—		726
Additional contributions expected in fiscal 2020:
Principal retirement plan *	$	15,000	$	—
Supplemental retirement plan	293		—
Other postretirement plan	—		263

* Amount represents expected contribution of cash and/or stock (see above).