Capital Stock and Stock-Based Compensation Plans - Summary of Common Stock and Treasury Stock Activity (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Common Stock Outstanding
Common stock balance, January 1 (in shares)	830,212,606	840,480,284	849,893,601
Common stock acquired (in shares)	14,735,909	17,060,788	16,518,163
Shares issued for stock options (in shares)	5,318,430	5,654,692	6,357,793
Shares issued for restricted stock and other (in shares)	617,642	1,138,418	747,053
Common stock balance, December 31 (in shares)	821,412,769	830,212,606	840,480,284
Treasury Stock
Treasury stock balance, January 1 (in shares)	635,493,754	625,226,076	615,812,759
Common stock acquired (in shares)	14,735,909	17,060,788	16,518,163
Shares issued for stock options (in shares)	5,318,430	5,654,692	6,357,793
Shares issued for restricted stock and other (in shares)	617,642	1,138,418	747,053
Treasury stock balance, December 31 (in shares)	644,293,591	635,493,754	625,226,076