Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Reconciliation of basic and diluted earnings per common share

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

	Three Months Ended June 30,				Six Months Ended June 30,
In millions, except per share amounts	2015		2014		2015		2014
Numerator for earnings per share calculations:
Net income(1)	$	1,265	$	1,246	$	2,481	$	2,375
Denominators for earnings per share calculations:
Weighted average shares, basic	1,124		1,165		1,126		1,172
Effect of dilutive securities	8		9		8		10
Weighted average shares, diluted	1,132		1,174		1,134		1,182
Net income per share:
Basic	$	1.13	$	1.07	$	2.20	$	2.03
Diluted	$	1.12	$	1.06	$	2.19	$	2.01

(1) Comprised of net income less amounts allocable to participating securities of $7 million and $12 million for the three and six months ended June 30, 2015, respectively.