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Inventories (Tables)
 12 Months Ended
Dec. 31, 2016
Inventory [Abstract]  
Schedule of Inventory, Current [Table Text Block] The components of inventories at December 31, 2016 and 2015 were as follows:
 
2016
2015
Manufacturing supplies
$
28.2

$
24.7

Raw materials
54.4

58.8

Work in process
180.2

181.9

Finished products
304.1

296.2

Subtotal
$
566.9

$
561.6

Allowance for surplus and obsolete inventory
(21.1
)
(18.4
)
Total Inventories, net
$
545.8

$
543.2