Defined Benefit Pension Plans (Tables)

3 Months Ended

Mar. 31, 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 March 31,
Dollar amounts in millions	2013			2012
Service cost	$	0.8		$	0.9
Interest cost	3.2			3.7
Expected return on plan assets	(4.1		)	(4.3		)
Amortization of prior service cost	0.1			0.1
Amortization of net loss	1.8			1.7
Net periodic pension cost	$	1.8		$	2.1