Leases (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The following is a schedule by year of future minimum payments required under the operating leases that have initial or remaining noncancelable lease terms in excess of one year as of December 31, 2017:

in millions
2018	$	13.7
2019	14.2
2020	13.8
2021	13.6
2022	14.3
2023 and thereafter	80.3
Total minimum lease payments	$	149.9