12.

Defined Benefit Plans

The components of net periodic benefit cost for pension and postretirement benefits for the nine and three months ended September 30, 2018 and 2017 were as follows:


(In millions)	Nine Months Ended September 30,
	Pension Benefits						Postretirement Benefits
	2018			2017			2018		2017
Service cost	$	0.4		$	0.4		$	—	$	—
Interest cost		23.0			25.0			—		—
Expected return on plan assets		(30.8	)		(28.0	)		—		—
Recognition of prior service credits		—			—			—		(5.1	)
Recognition of actuarial losses (gains)		0.3			0.3			—		(1.6	)

Net periodic benefit income	$	(7.1	)	$	(2.3	)	$	—	$	(6.7	)


(In millions)	Three Months Ended September 30,
	Pension Benefits						Postretirement Benefits
	2018			2017			2018		2017
Service cost	$	0.1		$	0.1		$	—	$	—
Interest cost		7.7			8.3			—		—
Expected return on plan assets		(10.3	)		(9.3	)		—		—
Recognition of actuarial losses (gains)		0.3			0.3			—		(1.6	)

Net periodic benefit income	$	(2.2	)	$	(0.6	)	$	—	$	(1.6	)

Service cost for 2018 relates to benefit accruals in an hourly Union defined benefit plan in our Doors & Security segment. All other defined benefit pension plans were frozen as of December 31, 2016.

In March 2017, the FASB issued ASU 2017-07, which requires entities to present the defined benefit plan non-service related costs outside the operating income subtotal. The new guidance was applied retrospectively in the condensed consolidated statement of comprehensive income. As a result, we reclassified $9.4 million of income from the operating income subtotal to the other income, net subtotal in the nine months ended September 30, 2017 and $2.3 in the three months ended September 30, 2017. The retrospective impact of adopting ASU 2017-07 on the nine and three months ended September 30, 2017 was as follows:


(In millions)
	Nine Months Ended September 30,			Three Months Ended September 30,
	2017			2017
Increase to cost of products sold	$	6.8		$	1.7
Increase to selling, general and administrative expenses		2.6			0.6

Decrease to operating income	$	(9.4	)	$	(2.3	)