10. Pension and Other Postretirement Benefit Plans

Defined Benefit Pension Plans - The company has both tax-qualified and nonqualified, noncontributory defined benefit pension plans, that together cover certain domestic and foreign employees. These plans provide benefits based upon a participant’s compensation and years of service.

The components of net periodic pension cost are as follows:


	Quarter Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
(dollars in millions)
Service cost, net of employee contributions	$	7.5		$	7.0		$	22.6		$	20.8
Interest cost		4.6			4.9			13.7			14.6
Expected return on plan assets		(6.5	)		(6.2	)		(19.5	)		(17.9	)
Amortization		3.4			2.8			10.2			7.8

Net periodic pension cost	$	9.0		$	8.5		$	27.0		$	25.3

Other Postretirement Benefit Plan - The company does not provide subsidized postretirement healthcare benefits and life insurance coverage except for a limited number of former employees. As this plan is unfunded, contributions are made as benefits are incurred. The net periodic benefit cost was $0.1 million and $0.2 million for the quarters ended September 30, 2013 and 2012, respectively. The net periodic benefit cost was $0.4 million and $0.5 million for the nine month periods ended September 30, 2013 and 2012, respectively.