Defined Benefit Pension Plans (Tables)

9 Months Ended

Sep. 30, 2013

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	2013			2012			2013			2012
Service cost	$	0.8		$	0.9		$	2.5		$	2.7
Interest cost	3.2			3.7			9.7			11.0
Expected return on plan assets	(4.1		)	(4.3		)	(12.4		)	(12.7		)
Amortization of prior service cost	0.1			0.1			0.2			0.2
Amortization of net loss	1.8			1.7			5.5			5.0
Net periodic pension cost	$	1.8		$	2.1		$	5.5		$	6.2