Pension and Other Postemployment Benefits

3 Months Ended

Mar. 31, 2018

Pension and Other Postemployment Benefits [Abstract]

Pension and Other Postemployment Benefits

Pension and Other Postemployment Benefits

Effective January 1, 2018, we retrospectively adopted ASU 2017-07 (see Note 1). As a result, only the service cost component of periodic benefit cost is recorded in salary and service cost and all other components of net periodic benefit cost are included in interest expense.

Defined Benefit Pension Plans

The components of net periodic benefit expense for the three months ended March 31, 2018 and 2017 were (in millions):

	2018			2017
Service cost	$	2.0		$	2.3
Interest cost	1.9			1.8
Expected return on plan assets	(0.7		)	(0.7		)
Amortization of prior service cost	1.1			1.1
Amortization of actuarial losses	1.6			1.6
	$	5.9		$	6.1

We contributed $0.2 million and $0.3 million to our defined benefit pension plans in the three months ended March 31, 2018 and 2017, respectively.

Postemployment Arrangements

The components of net periodic benefit expense for the three months ended March 31, 2018 and 2017 were (in millions):

	2018		2017
Service cost	$	1.2	$	1.1
Interest cost	1.0		0.9
Amortization of prior service cost	0.9		0.9
Amortization of actuarial losses	0.4		0.3
	$	3.5	$	3.2