Retirement and Postretirement Plans

We sponsor five defined benefit retirement plans. Those plans include a master defined benefit retirement plan in the United States, a nonqualified supplemental executive defined benefit retirement plan, and three defined benefit retirement plans covering employees in Germany and France. Benefits for such plans are based primarily on years of service and the employee’s level of compensation in specific periods of employment. We contribute funds to trusts as necessary to provide for current service and for any unfunded projected future benefit obligation over a reasonable period of time. All of our plans have a September 30 measurement date. The following table details the components of net pension expense for our defined benefit retirement plans.



	Quarter Ended December 31						Condensed Consolidated Statements of Income Item
	2018			2017			Condensed Consolidated Statements of Income Item
Service cost	$	0.3		$	0.3		Cost of goods sold
Service cost	0.8			0.9			Selling and administrative expenses
Interest cost	3.1			2.7			Investment income and other, net
Expected return on plan assets	(3.7		)	(3.9		)	Investment income and other, net
Amortization of net loss	0.6			1.2			Investment income and other, net
Net pension expense	$	1.1		$	1.2

In addition to defined benefit retirement plans, we also offer two postretirement health care plans in the United States that provide health care benefits to qualified retirees and their dependents. The plans are closed to new participants and include retiree cost sharing provisions and generally extends retiree coverage for medical and prescription benefits beyond the COBRA continuation period to the date of Medicare eligibility. Annual costs related to these plans are not significant.

We have defined contribution savings plans that cover substantially all U.S. employees and certain non-U.S. employees. The general purpose of these plans is to provide additional financial security in retirement by providing employees with an incentive to make regular savings. Our contributions to the plans are based on eligibility and, in some cases, employee contributions. Expense under these plans was $6.2 million and $6.4 million in each of the quarterly periods ended December 31, 2018 and 2017.