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Interest and Other Expenses (Tables)
 12 Months Ended
Dec. 31, 2017
Other Nonoperating Income (Expense) [Abstract]  
Schedule of interest and other expenses
Interest and other expenses consisted of the following:
Year Ended December 31
2017

2016

2015

Interest expense

$38.2


$37.9


$36.0

Interest income
(4.8
)
(3.6
)
(2.5
)
Foreign exchange loss (gain)
0.8

2.8

(4.7
)
Miscellaneous expense (income), net
16.7

12.4

(0.6
)
Interest and other expenses

$50.9


$49.5


$28.2