Earnings Per Share (EPS) and Dividends (Tables)

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Basic And Diluted Earnings Per Share Computation

The following table shows the effect of these stock options, performance units and restricted stock units on the weighted average number of shares outstanding used in calculating diluted EPS:

	Years Ended December 31,
	2015				2014				2013
	Basic		Diluted		Basic		Diluted		Basic		Diluted
EPS Numerator:
(Millions)
Net Income	$	1,679	$	1,679	$	1,518	$	1,518	$	1,243	$	1,243
EPS Denominator:
(Millions)
Weighted Average Common Shares Outstanding	505		505		506		506		506		506
Effect of Stock Based Compensation Awards	—		3		—		2		—		2
Total Shares	505		508		506		508		506		508
EPS:
Net Income	$	3.32	$	3.30	$	3.00	$	2.99	$	2.46	$	2.45

Dividend Payments On Common Stock

	Years Ended December 31,
Dividend Payments on Common Stock	2015		2014		2013
Per Share	$	1.56	$	1.48	$	1.44
in Millions	$	789	$	748	$	728