Receivables (Tables)

6 Months Ended

Jun. 30, 2018

Receivables [Abstract]

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

Receivables consist of the following:

Dollar amounts in millions	June 30, 2018			December 31, 2017
Trade receivables	$	148.3		$	124.6
Income tax receivable	1.6			2.2
Other receivables	13.3			16.6
Allowance for doubtful accounts	(0.9		)	(0.9		)
Total	$	162.3		$	142.5