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Leases (Tables)
12 Months Ended
Dec. 31, 2017
Leases [Abstract]  
Schedule of future minimum payments under noncancelable operating leases
Future minimum payments, by year and in the aggregate, under noncancelable operating leases with any remaining terms consisted of the following as of December 31, 2017:
Year
 
2018

$167.3

2019
123.0

2020
93.6

2021
69.0

2022
54.0

Thereafter
125.1

Total minimum lease payments

$632.0