Receivables (Tables)

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Receivables consist of the following:

	December 31,
Dollar amounts in millions	2014			2013
Trade receivables	$	96.1		$	69.2
Interest receivables	0.2			0.2
Income tax receivable	1.4			1.2
Other receivables	11.7			8.6
Allowance for doubtful accounts	(1.0		)	(1.1		)
	$	108.4		$	78.1