Description of Business, Accounting Policies, and Supplemental Disclosures - Calculation of Diluted Shares (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Shares used in computation of basic earnings per share	10,189	10,117	10,005
Total dilutive effect of outstanding stock awards	0	179	193
Shares used in computation of diluted earnings per share	10,189	10,296	10,198