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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2014
Income Tax Disclosure [Abstract]  
Changes in unrecognized tax benefits
The following table reflects changes in unrecognized tax benefits for the nine months ended September 30, 2014:
 
 
(In millions)
Gross amounts of unrecognized tax benefits as of January 1, 2014
$
334

Increases related to prior period tax positions
21

Decreases related to prior period tax positions
(9
)
Increases related to current period tax positions
41

Settlements
(10
)
Gross amounts of unrecognized tax benefits as of September 30, 2014
$
377