Defined Benefit Pension Plans (Tables)

9 Months Ended

Sep. 30, 2014

Compensation and Retirement Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The net periodic pension cost included the following components:

	Quarter Ended September 30,						Nine Months Ended September 30,
Dollar amounts in millions	2014			2013			2014			2013
Service cost	$	0.9		$	0.8		$	2.8		$	2.5
Interest cost	3.7			3.2			11.0			9.7
Expected return on plan assets	(4.2		)	(4.1		)	(12.7		)	(12.4		)
Amortization of prior service cost	—			0.1			—			0.2
Amortization of net loss	1.4			1.8			4.2			5.5
Net periodic pension cost	$	1.8		$	1.8		$	5.3		$	5.5