Pension and Other Postretirement Plans

6 Months Ended

Apr. 30, 2017

Compensation And Retirement Disclosure [Abstract]

Pension and Other Postretirement Plans

7. Pension and other postretirement plans  

The components of net periodic pension cost for the three and six months ended April 30, 2017 and April 30, 2016 were:

	U.S.						International
Three Months Ended	2017			2016			2017			2016
Service cost	$	3,184		$	2,984		$	625		$	719
Interest cost		3,243			4,032			419			609
Expected return on plan assets		(5,265	)		(4,914	)		(358	)		(377	)
Amortization of prior service cost (credit)		11			19			(76	)		(24	)
Amortization of net actuarial loss		2,457			2,314			662			471
Total benefit cost	$	3,630		$	4,435		$	1,272		$	1,398
	U.S.						International
Six Months Ended	2017			2016			2017			2016
Service cost	$	6,243		$	5,745		$	1,159		$	1,420
Interest cost		6,454			7,966			768			1,222
Expected return on plan assets		(10,443	)		(9,833	)		(643	)		(765	)
Amortization of prior service cost (credit)		23			38			(147	)		(45	)
Amortization of net actuarial loss		4,785			4,240			1,261			936
Total benefit cost	$	7,062		$	8,156		$	2,398		$	2,768

The components of other postretirement benefit cost for the three and six months ended April 30, 2017 and April 30, 2016 were:

	U.S.						International
Three Months Ended	2017			2016			2017			2016
Service cost	$	154		$	176		$	5		$	5
Interest cost		565			696			5			6
Amortization of prior service credit		(41	)		(66	)		—			—
Amortization of net actuarial (gain) loss		205			130			(4	)		(7	)
Total benefit cost	$	883		$	936		$	6		$	4
	U.S.						International
Six Months Ended	2017			2016			2017			2016
Service cost	$	376		$	425		$	9		$	8
Interest cost		1,152			1,461			10			12
Amortization of prior service credit		(82	)		(133	)		—			—
Amortization of net actuarial (gain) loss		434			342			(8	)		(12	)
Total benefit cost	$	1,880		$	2,095		$	11		$	8