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Other Income
 12 Months Ended
Dec. 31, 2013
Other Income and Expenses [Abstract]  
Other Earnings
Other Income
(Millions)
2013
 
2012
 
2011
Royalty income
$
48

 
$
51

 
$
55

Share of net (losses)/earnings of equity affiliates (See Note 5)
(8
)
 
9

 
36

Gain on sale of assets
6

 
3

 
7

Other
85

 
76

 
54

Total
$
131

 
$
139

 
$
152