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Discontinued Operations Sales and Operating Profit in Discontinued Operations (Tables)
 12 Months Ended
Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]  
Sales and Operating Profit in Discontinued Operations [Table Text Block]
Over the last several years, we have adopted and implemented plans to sell selected businesses and assets in order to improve our operating results. For all periods presented, these operations include residual losses of mills divested in past years and associated warranty and other liabilities associated with these operations.
Dollar amounts in millions
 
2017
 
2016
 
2015
Operating loss
 
$
(2.0
)
 
$
(0.8
)
 
$
(3.2
)
Cash provided by (used in) operations from discontinued operations
 
(1.8
)
 
(2.6
)
 
(4.3
)