Defined Benefit Pension Plans (Tables)

9 Months Ended

Sep. 30, 2012

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	2012			2011			2012			2011
Service cost	$	0.9		$	0.8		$	2.7		$	2.4
Interest cost	3.7			4.0			11.0			12.0
Expected return on plan assets	(4.3		)	(4.5		)	(12.7		)	(13.5		)
Amortization of prior service cost	0.1			0.1			0.2			0.3
Amortization of net loss	1.7			1.1			5.0			3.3
Net periodic pension cost	$	2.1		$	1.5		$	6.2		$	4.5