Leases and Commitments

12 Months Ended

Dec. 31, 2017

LEASES AND COMMITMENTS

Certain assets are leased under long-term operating leases including rent for facilities. Most leases contain renewal options for various periods. Leases generally require the Company to pay for insurance, taxes and maintenance of the leased property. The Company leases other equipment such as vehicles and certain office equipment under short-term leases. Total rent expense was $39.6 million, $38.2 million and $31.9 million in the years ended December 31, 2017, 2016 and 2015, respectively. The Company does not have any material capital leases.

Future minimum operating lease payments at December 31, 2017 were as follows:



(millions of dollars)
2018	$	23.0
2019	18.9
2020	9.2
2021	8.4
2022	7.0
After 2022	11.8
Total minimum lease payments	$	78.3