Capital Stock and Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2023

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, 2021	849,893,601	615,812,759
Common stock acquired	(16,518,163)	16,518,163
Shares issued for stock options	6,357,793	(6,357,793)
Shares issued for restricted stock units and other	747,053	(747,053)
Balance, December 31, 2021	840,480,284	625,226,076
Common stock acquired	(17,060,788)	17,060,788
Shares issued for stock options	5,654,692	(5,654,692)
Shares issued for restricted stock units and other	1,138,418	(1,138,418)
Balance, December 31, 2022	830,212,606	635,493,754
Common stock acquired	(14,735,909)	14,735,909
Shares issued for stock options	5,318,430	(5,318,430)
Shares issued for restricted stock units and other	617,642	(617,642)
Balance, December 31, 2023	821,412,769	644,293,591

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

The weighted-average fair value assumptions are summarized in the following table:

	2023			2022			2021
Expected term of options	6 years			6 years			6 years
Expected volatility rate	19.8		%	21.1		%	20.3		%
Risk-free interest rate	4.3		%	3.0		%	1.0		%
Expected dividend yield	2.5		%	2.4		%	2.3		%
Weighted-average estimated fair value	$	14.89		$	14.71		$	11.11

Schedule of Share-based Compensation, Stock Options, Activity

A summary of stock option activity during 2023 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, 2023	24,431	$	75
Granted	2,310	73
Exercised	(5,318)	72
Forfeited	(174)	77
Expired	(507)	74
Options outstanding, December 31, 2023	20,742	75		5	$	97
Options exercisable, December 31, 2023	14,608	$	75	4	$	74

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

A summary of performance-based restricted stock unit activity for the year ended December 31, 2023 is presented below:

	Shares (in thousands)	Weighted Average Grant Date Fair Value Per Award
Performance-based restricted stock units as of January 1, 2023	1,026	$	70
Activity:
Granted	393	67
Vested	(234)	71
Forfeited	(97)	74
Change due to performance and/or market condition achievement	(19)	77
Performance-based restricted stock units as of December 31, 2023	1,069	$	68

A summary of restricted stock unit activity during 2023 is presented below:

	Shares (in thousands)	Weighted Average Grant Date Fair Value Per Award
Restricted stock units as of January 1, 2023	1,860	$	77
Activity:
Granted	979	73
Vested	(594)	77
Forfeited	(71)	76
Restricted stock units as of December 31, 2023	2,174	$	76