Capital Stock (Schedule of Issued Repurchased and Outstanding Shares) (Details) - shares	12 Months Ended			24 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022
Common Stock, Shares Outstanding [Roll Forward]
Beginning balance, Shares Issued (in shares)	2,805,961,317	2,805,961,317	2,805,961,317	2,805,961,317
Beginning balance, Shares Repurchased (in shares)	(1,020,427,195)	(982,785,699)	(947,542,152)	(947,542,152)
Beginning balance, Shares Outstanding (in shares)	1,785,534,122	1,823,175,618	1,858,419,165	1,858,419,165
Stock award activity (in shares)	676,495	514,816	412,569
Repurchases of common stock (in shares)	(22,748,842)	(38,156,312)	(35,656,116)
Ending balance, Shares Issued (in shares)	2,805,961,317	2,805,961,317	2,805,961,317	2,805,961,317
Ending balance, Shares Repurchased (in shares)	(1,042,499,542)	(1,020,427,195)	(982,785,699)	(1,020,427,195)
Ending balance, Shares Outstanding (in shares)	1,763,461,775	1,785,534,122	1,823,175,618	1,785,534,122