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Income Taxes (Tables)
 9 Months Ended
Sep. 30, 2012
Income Taxes Disclosure [Abstract]  
Summary Of Activity In Unrecognized Tax Benefits Table [Text Block]
The following table summarizes the activity in unrecognized tax benefits:
 
Nine Months Ended September 30,
(In millions)
2012
 
2011
Beginning balance
$
157

 
$
103

Additions based on tax positions related to the current year
2

 
3

Reductions based on tax positions related to the current year
(1
)
 
(3
)
Additions for tax positions of prior years
97

 
71

Reductions for tax positions of prior years
(66
)
 
(24
)
Settlements
(12
)
 
(9
)
Ending balance
$
177

 
$
141