Pension Plans (Tables)

3 Months Ended

Mar. 31, 2016

Components of Net Periodic Pension Cost

The components of net periodic pension cost are as follows:

	Three Months Ended March 31,
	2016			2015
(dollars in millions)
Service cost, net of employee contributions	$	7.3		$	7.5
Interest cost		4.7			5.0
Expected return on plan assets		(8.1	)		(7.8	)
Amortization		2.6			2.9
Net periodic pension cost	$	6.5		$	7.6