Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Reconciliation of basic and diluted earnings per common share

The following is a reconciliation of basic and diluted earnings per share for the respective periods:

	Three Months Ended March 31,
In millions, except per share amounts	2014		2013
Numerator for earnings per share calculations:
Net income	$	1,129	$	954
Denominators for earnings per share calculations:
Weighted average shares, basic	1,180		1,232
Effect of dilutive securities:
Stock options	8		7
Restricted stock units	2		2
Weighted average shares, diluted	1,190		1,241
Net income per share:
Basic	$	0.96	$	0.77
Diluted	$	0.95	$	0.77