Operating Leases (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Future Minimum Operating Lease Payments

Future minimum operating lease payments on non-cancelable leases are as follows, not including the variable portion of contingent leases (in millions):

Years Ended December 31,
2018	$	5.2
2019	4.3
2020	3.8
2021	3.4
2022	1.9
Thereafter	3.2
Total	$	21.8