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LEASE COMMITMENTS
 12 Months Ended
Dec. 31, 2017
Lease Commitments [Abstract]  
LEASE COMMITMENTS
LEASE COMMITMENTS

Future minimum noncancellable operating lease payments at December 31, 2017 are as follows (in millions):
 
Operating
Leases
2018
$
31.1

2019
25.3

2020
19.9

2021
17.7

2022
16.1

Thereafter
43.4

Total minimum obligations
$
153.5



Most of the Company’s operating leases provide the Company with the option to renew the leases for varying periods after the initial lease terms. These renewal options enable the Company to renew the leases based upon the fair rental values at the date of expiration of the initial lease. Total rental expense under operating leases was $39.9 million, $44.3 million, and $49.6 million in 2017, 2016 and 2015, respectively.