Description of Business, Accounting Policies, and Supplemental Disclosures - Calculation of Diluted Shares (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Shares used in computation of basic earnings per share	10,304	10,189	10,117
Total dilutive effect of outstanding stock awards	188	0	179
Shares used in computation of diluted earnings per share	10,492	10,189	10,296