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Discontinued Operations (Tables)
9 Months Ended
Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]  
Discontinued operations income statement
Sales from discontinued operations, operating profit from discontinued operations and income from discontinued operations before income taxes for the three and nine months ended September 30, 2012 were as follows:
(millions)
Three months ended
September 30, 2012
 
Nine months ended September 30, 2012
Sales from discontinued operations
$
27

 
$
83

Operating profit from discontinued operations
1

 
7

Income from discontinued operations before income taxes
1

 
7