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Capital Stock (Tables)
 12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Schedule of Authorized Common Stock Repurchase Programs Shares of Common Stock issued, in treasury and outstanding were:
Shares IssuedTreasury SharesShares
Outstanding
Balance at January 1, 20191,996,537,778 (545,537,923)1,450,999,855 
Shares repurchased— (30,902,465)(30,902,465)
Exercise of stock options and issuance of
   other stock awards		— 14,908,864 14,908,864 
Balance at December 31, 20191,996,537,778 (561,531,524)1,435,006,254 
Shares repurchased— (25,071,845)(25,071,845)
Exercise of stock options and issuance of
   other stock awards		— 9,239,812 9,239,812 
Balance at December 31, 20201,996,537,778 (577,363,557)1,419,174,221 
Shares repurchased— (35,384,366)(35,384,366)
Exercise of stock options and issuance of
   other stock awards		— 7,840,684 7,840,684 
Balance at December 31, 20211,996,537,778 (604,907,239)1,391,630,539