Committments and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]

At December 31, 2018, future minimum commitments are as follows:

Dollar amounts in millions
Year ended December 31,
2019	$	8.4
2020	7.3
2021	4.6
2022	1.8
2023	—
2024 and thereafter	—
Total	$	22.1