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Contingencies (Tables)
 6 Months Ended
Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Product Warranty Liability [Table Text Block] In addition to the contingencies above, the Company provides limited warranties on certain of its products. The following table is a rollforward of the warranty liability for the six months ended June 30, 2018 and the twelve months ended December 31, 2017: 
 
June 30,
2018
December 31,
2017
Beginning balance, January 1
$
5.8

$
6.9

Additions
1.3

2.7

Payments
(1.0
)
(3.8
)
Ending balance
$
6.1

$
5.8