Note 4 — Retirement and Other Postretirement Benefit Plans

We maintain qualified and nonqualified defined benefit retirement plans covering certain current and former U.S. and European employees, retirement savings plans covering eligible U.S. and U.K. employees and certain postretirement health care and life insurance benefit plans covering eligible U.S. retirees. We also participate in a union sponsored multi-employer pension plan covering certain U.S. employees with union affiliations.

Defined Benefit Retirement Plans

Net Periodic Benefit Costs

Net periodic benefit costs of our defined benefit retirement plans for the quarters and six months ended June 30, 2016 and 2015 were as follows:

	Quarter Ended June 30,					Six Months Ended June 30,
(In millions)	2016		2015		2016				2015
U.S. Nonqualified Defined Benefit Retirement Plans
Service cost	$	0.3	$	0.3	$		0.6	$		0.6
Interest cost		0.2		0.1			0.3			0.3
Net amortization and deferral		0.1		0.8			0.2			1.5
Net periodic benefit cost	$	0.6	$	1.2	$		1.1	$		2.4

	June 30, 2016		December 31, 2015
Amounts recognized on the balance sheet:
Accrued liabilities	$	0.7	$	0.7
Other non-current liabilities		17.8		17.0
Total accrued benefit	$	18.5	$	17.7

	Quarter Ended June 30,						Six Months Ended June 30,
(In millions)	2016			2015			2016			2015
European Defined Benefit Retirement Plans
Service cost	$	0.2		$	0.2		$	0.4		$	0.4
Interest cost		1.4			1.7			2.9			3.3
Expected return on plan assets		(2.0	)		(2.3	)		(4.1	)		(4.5	)
Net amortization and deferral		0.1			0.2			0.3			0.4
Net periodic benefit credit	$	(0.3	)	$	(0.2	)	$	(0.5	)	$	(0.4	)

	June 30, 2016		December 31, 2015
Amounts recognized on the balance sheet:
Noncurrent asset	$	16.3	$	13.6

Accrued liabilities		1.1		0.4
Other non-current liabilities		17.5		15.6
Total accrued benefit	$	18.6	$	16.0

Contributions

We generally fund our U.S. non-qualified defined benefit retirement plans when benefit payments are incurred. Under the provisions of these non-qualified plans, we have contributed $0.1 million in each of the first two quarters of 2016 to cover unfunded benefits and expect to contribute a total of $0.5 million in 2016. We contributed $4.9 million to our U.S. non-qualified defined benefit retirement plans during the 2015 fiscal year.

We contributed $2.4 million and $1.3 million to our European defined benefit retirement plans in the second quarters of 2016 and 2015, respectively. Contributions to the defined benefit retirement plans were $2.7 million for each of the six months ended June 30, 2016 and 2015. We plan to contribute approximately $4.8 million during 2016 to these European plans. We contributed $4.3 million to our European plans during the 2015 fiscal year.

Postretirement Health Care and Life Insurance Benefit Plans

Net periodic benefit costs of our postretirement health care and life insurance benefit plans for the quarters and six months ended June 30, 2016 and 2015 were immaterial.

	June 30, 2016		December 31, 2015
Amounts recognized on the balance sheet:
Accrued liabilities	$	0.6	$	0.6
Other non-current liabilities		4.5		4.7
Total accrued benefit	$	5.1	$	5.3

In connection with our postretirement plans, we contributed about $0.1 million during each of the six-month periods ended June 30, 2016 and 2015. We periodically fund our postretirement plans to pay covered expenses as they are incurred. Based upon six months of activity, we expect to contribute approximately $0.3 million in 2016 to cover unfunded benefits. We contributed $0.2 million to our postretirement plans during the 2015 fiscal year.