Earnings Per Share

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

9. Earnings Per Share

The following table provides a reconciliation between basic and diluted earnings per share:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
Millions, Except Per Share Amounts	2014		2013		2014		2013
Net income	$	1,291	$	1,106	$	2,379	$	2,063
Weighted-average number of shares outstanding:
Basic		901.5		930.6		904.8		933.1
Dilutive effect of stock options		1.8		2.6		2.2		2.7
Dilutive effect of retention shares and units		1.7		2.1		1.7		2.3
Diluted		905.0		935.3		908.7		938.1
Earnings per share – basic	$	1.43	$	1.19	$	2.63	$	2.21
Earnings per share – diluted	$	1.43	$	1.18	$	2.62	$	2.20
Stock options excluded as their inclusion would be antidilutive		1.0		1.1		0.8		1.0