11. PENSION AND POST-RETIREMENT PLANS

The Company’s pension and post-retirement plans are described in Note 11 to the Consolidated Financial Statements included in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. The following tables provide the components of net periodic benefit cost for the Company’s qualified defined benefit pension and post-retirement plans for the three and nine months ended September 30, 2018 and 2017:


	Pension Benefits				Post-retirement Benefits
	Three Months Ended September 30,				Three Months Ended September 30,
(In millions)	2018		2017		2018		2017
Components of net periodic benefit cost (benefit):
Service cost	$	1.1	$	1.1	$	0.2	$	(0.4)
Interest cost		2.1		2.5		0.3		(0.6)
Expected return on plan assets		(3.3)		(3.3)		—		—
Amortization of net loss		1.0		1.3		0.3		0.3
Amortization of prior service credit		(0.5)		(0.6)		(1.0)		(2.8)
Other adjustments		—		0.1		—		—
Net periodic benefit cost	$	0.4	$	1.1	$	(0.2)	$	(3.5)


	Pension Benefits				Post-retirement Benefits
	Nine Months Ended September 30,				Nine Months Ended September 30,
(In millions)	2018		2017		2018		2017
Components of net periodic benefit cost (benefit):
Service cost	$	3.3	$	3.0	$	0.5	$	0.4
Interest cost		6.4		7.3		0.8		0.8
Expected return on plan assets		(10.1)		(10.1)		—		—
Amortization of net loss		3.4		3.8		1.1		0.9
Amortization of prior service credit		(1.7)		(1.7)		(2.8)		(2.8)
Other adjustments		—		0.1		—		—
Net periodic benefit cost	$	1.3	$	2.4	$	(0.4)	$	(0.7)