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Other Operating Credits and Charges, Net (Tables)
 6 Months Ended
Jun. 30, 2013
Other Operating Credits And Charges, Net [Abstract]  
Other Operating Credits and Charges Net [Table Text Block]
The major components of “Other operating credits and charges, net” in the Consolidated Statements of Income for the second quarter and six months ended June 30, 2013 and June 30, 2012 are reflected in the table below and are described in the paragraphs following the table:
 
Quarter Ended June 30,
 
Six Months Ended June 30,
Dollar amounts in millions
2013
 
2012
 
2013
 
2012
Other operating charges and credits net:
 
 
 
 
 
 
 
   Adjustment related to prior year inventory
$
—

 
$
—

 
$
(1.6
)
 
$
—

   Adjustment related to prior year depreciation
(1.5
)
 
—

 
(1.5
)
 
—

   Construction related legal reserve
—

 
—

 
—

 
0.5

   Addition to warranty reserves
(4.1
)
 
—

 
(4.1
)
 
—

   Other
0.2

 
(0.2
)
 
0.2

 
(0.5
)
 
$
(5.4
)
 
$
(0.2
)
 
$
(7.0
)
 
$
—

Other operating charges and credits associated with unconsolidated affiliates:
 
 
 
 
 
 
 
   Valuation allowance associated with deferred taxes
$
(1.8
)
 
$
—

 
$
(1.8
)
 
$
—

   Addition to contingency reserves
(0.9
)
 
—

 
(0.9
)
 
—

 
$
(2.7
)
 
$
—

 
$
(2.7
)
 
$
—

 
$
(8.1
)
 
$
(0.2
)
 
$
(9.7
)
 
$
—