Capital Stock and Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [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, 2017	883,108,963		582,597,397
Common stock acquired	(19,185,828	)	19,185,828
Shares issued for stock options	9,670,988		(9,670,988	)
Shares issued for restricted stock units and other	1,106,995		(1,106,995	)
Balance, December 31, 2017	874,701,118		591,005,242
Common stock acquired	(18,786,897	)	18,786,897
Shares issued for stock options	6,040,920		(6,040,920	)
Shares issued for restricted stock units and other	957,651		(957,651	)
Balance, December 31, 2018	862,912,792		602,793,568
Common stock acquired	(17,219,642	)	17,219,642
Shares issued for stock options	8,145,777		(8,145,777	)
Shares issued for restricted stock units and other	862,852		(862,852	)
Balance, December 31, 2019	854,701,779		611,004,581

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:

	2019		2018		2017
Expected term of options	6 years		4.5 years		4.5 years
Expected volatility rate	19.2	%	17.7	%	16.0	%
Risk-free interest rate	1.5	%	2.8	%	1.8	%
Expected dividend yield	2.3	%	2.5	%	2.2	%

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

A summary of performance-based restricted stock unit activity during 2019 is presented below:

	Shares (in thousands)		Grant Date Fair Value Per Award
Performance-based restricted stock units as of January 1, 2019	—		$	—
Activity:
Granted	365		67
Forfeited	(19	)	67
Performance-based restricted stock units as of December 31, 2019	346		$	67

A summary of restricted stock unit activity during 2019 is presented below:

	Shares (in thousands)		Weighted Average Grant Date Fair Value Per Award
Restricted stock units as of January 1, 2019	2,474		$	71
Activity:
Granted	554		71
Vested	(761	)	70
Forfeited	(64	)	70
Restricted stock units as of December 31, 2019	2,203		$	71

Schedule of Share-based Compensation, Stock Options, Activity

A summary of stock option activity during 2019 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, 2019	39,710		$	67
Granted	5,364		72
Exercised	(8,205	)	61
Forfeited or expired	(684	)	70
Options outstanding, December 31, 2019	36,185		69		4	$	63
Options exercisable, December 31, 2019	25,142		$	69	3	$	60