Income Taxes (Tables)

9 Months Ended

Sep. 30, 2014

Income Tax Disclosure [Abstract]

Unrecognized tax benefits

(In millions)	September 30, 2014		December 31, 2013
Unrecognized tax benefits	$	3,343	$	3,223
Portion that, if recognized, would reduce tax expense and effective tax rate(a)		2,205		2,346
Accrued interest on unrecognized tax benefits		430		570
Accrued penalties on unrecognized tax benefits		29		97
Reasonably possible reduction to the balance of unrecognized
tax benefits in succeeding 12 months		0-600		0-800
Portion that, if recognized, would reduce tax expense and effective tax rate(a)		0-50		0-250

(a)Some portion of such reduction may be reported as discontinued operations.