Commitments and Contingencies Leases (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

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

As of December 31, 2018, undiscounted future minimum lease payments under our non-cancelable operating leases are as follows over each of the next five years and thereafter (in millions):

2019	$	8.3
2020	8.6
2021	6.5
2022	5.9
2023	5.6
Thereafter	13.2
Total	$	48.1