Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Components of net periodic benefit cost

Tables 10.1 and 10.2 provide the components of net periodic benefit cost for our pension, supplemental executive retirement and other postretirement benefit plans for the three and nine months ended September 30, 2022 and 2021.

Components of net periodic benefit cost
Table	10.1
		Three Months Ended September 30,
		Pension and Supplemental Executive Retirement Plans				Other Postretirement Benefit Plans
(In thousands)		2022		2021		2022		2021
Service cost		$	1,813	$	1,908	$	327	$	377
Interest cost		2,863		2,794		173		163
Expected return on plan assets		(4,907)		(5,229)		(2,625)		(2,216)
Amortization of net actuarial losses (gains)		1,266		1,403		(776)		(425)
Amortization of prior service cost (credit)		(57)		(60)		123		53
Settlements and curtailments		5,671		4,732		—		—
Net periodic benefit cost (benefit)		$	6,649	$	5,548	$	(2,778)	$	(2,048)
Components of net periodic benefit cost
Table	10.2
		Nine Months Ended September 30,
		Pension and Supplemental Executive Retirement Plans				Other Postretirement Benefit Plans
(In thousands)		2022		2021		2022		2021
Service cost		$	5,439	$	5,724	$	981	$	1,131
Interest cost		8,588		8,383		521		487
Expected return on plan assets		(14,723)		(15,687)		(7,876)		(6,647)
Amortization of net actuarial losses (gains)		3,798		4,208		(2,328)		(1,273)
Amortization of prior service cost (credit)		(163)		(179)		367		159
Settlements and curtailments		5,671		4,732		—		—
Net periodic benefit cost (benefit)		$	8,610	$	7,181	$	(8,335)	$	(6,143)