Capital Stock and Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule Of Common And Treasury Stock Activity

A summary of common stock and treasury stock activity for the three years ended December 31, is as follows:

	Common Stock Outstanding		Treasury Stock
Balance, January 1, 2014	919,946,575		545,759,785
Common stock acquired	(23,131,081	)	23,131,081
Shares issued for stock options	7,977,124		(7,977,124	)
Shares issued for restricted stock units and other	1,919,527		(1,919,527	)
Balance, December 31, 2014	906,712,145		558,994,215
Common stock acquired	(22,802,784	)	22,802,784
Shares issued for stock options	7,394,839		(7,394,839	)
Shares issued for restricted stock units and other	1,434,318		(1,434,318	)
Balance, December 31, 2015	892,738,518		572,967,842
Common stock acquired	(19,271,304	)	19,271,304
Shares issued for stock options	8,536,639		(8,536,639	)
Shares issued for restricted stock units and other	1,105,110		(1,105,110	)
Balance, December 31, 2016	883,108,963		582,597,397

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions

Fair value is estimated using the Black-Scholes option pricing model with the assumptions summarized in the following table:

	2016		2015		2014
Expected term of options	4.5 years		4.5 years		4.5 years
Expected volatility rate	16.7	%	17.6	%	17.1	%
Risk-free interest rate	1.2	%	1.5	%	1.6	%
Expected dividend yield	2.1	%	2.5	%	2.3	%

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of restricted stock unit activity during 2016 is presented below:

	Shares (in thousands)		Weighted Average Grant Date Fair Value Per Award
Restricted stock units as of January 1, 2016	3,166		$	61
Activity:
Granted	933		70
Vested	(1,048	)	58
Forfeited	(106	)	59
Restricted stock units as of December 31, 2016	2,945		$	66

Schedule of Share-based Compensation, Stock Options, Activity

A summary of stock option activity during 2016 is presented below:

	Shares (in thousands)		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in years)	Intrinsic Value of Unexercised In-the-Money Options
Options outstanding, January 1, 2016	43,920		$	56
Granted	9,163		73
Exercised	(8,903	)	46
Forfeited or expired	(488	)	60
Options outstanding, December 31, 2016	43,692		61		4	$	261
Options exercisable, December 31, 2016	26,396		$	57	3	$	236