XML 42 R29.htm IDEA: XBRL DOCUMENT

Pension and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2023

Components of Net Periodic Benefit Cost (Credit)


	Pension		Other Postretirement
Components of Net Periodic Benefit Cost (Credit)	2023	2022	2023	2022
Millions
Quarter Ended September 30,
Service Cost	$1.7	$2.1	$0.6	$0.8
Non-Service Cost Components (a)
Interest Cost	10.2	6.9	1.6	1.1
Expected Return on Plan Assets	(10.9)	(10.4)	(2.9)	(2.4)
Amortization of Prior Service Credits	(0.1)	—	(1.8)	(1.8)
Amortization of Net Loss	1.4	2.8	(0.6)	0.1

Net Periodic Benefit Cost (Credit)	$2.3	$1.4	$(3.1)	$(2.2)

Nine Months Ended September 30,
Service Cost	$4.9	$6.9	$1.7	$2.3
Non-Service Cost Components (a)
Interest Cost	30.4	20.4	4.6	3.3
Expected Return on Plan Assets	(32.8)	(31.1)	(8.5)	(7.2)
Amortization of Prior Service Credits	(0.1)	(0.1)	(5.3)	(5.6)
Amortization of Net Loss	4.3	8.6	(1.7)	0.3

Net Periodic Benefit Cost (Credit)	$6.7	$4.7	$(9.2)	$(6.9)

(a)These components of net periodic benefit cost (credit) are included in the line item “Other” under Other Income (Expense) on the Consolidated Statement of Income.