Operating Leases (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Future minimum lease payments

Obligations to make future minimum lease payments at December 31, 2017, are presented below:

2018	$	18.2
2019	18.8
2020	18.1
2021	18.9
2022	16.6
2023 and thereafter	90.2
Total minimum lease payments	$	180.8