Receivables (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

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

Receivables consist of the following:

Dollar amounts in millions	March 31, 2018			December 31, 2017
Trade receivables	$	132.3		$	124.6
Income tax receivable	1.9			2.2
Other receivables	16.0			16.6
Allowance for doubtful accounts	(0.9		)	(0.9		)
Total	$	149.3		$	142.5