Other Operating Credits and Charges, Net (Tables)

3 Months Ended

Mar. 31, 2013

Other Operating Credits And Charges, Net [Abstract]

Other Operating Credits and Charges Net [Table Text Block]

The major components of “Other operating credits and charges, net” in the Consolidated Statements of Income for the three months ended March 31, 2013 and March 31, 2012 are reflected in the table below and are described in the paragraphs following the table:

	Quarter Ended March 31,
Dollar amounts in millions	2013			2012
Adjustment related to prior year inventory	$	(1.6	)	$	—
Severance	—			(0.3		)
Construction related legal reserve	—			0.5
	$	(1.6	)	$	0.2