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Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Range of Estimated Loss and Number of Active Sites
The following table illustrates the range of our currently estimated loss and number of active sites for these environmental matters:
(In millions)
September 30,
2014
 
December 31,
2013
Low-end range
$
3

 
$
3

High-end range
$
30

 
$
6

Number of active environmental investigation and remediation sites
28

 
5