Accounting Policies and Supplemental Disclosures - Calculation of Diluted Shares (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accounting Policies [Abstract]
Shares used in computation of basic earnings per share (in shares)	10,501	10,322	10,447	10,286
Total dilutive effect of outstanding stock awards (in shares)	234	236	258	166
Shares used in computation of diluted earnings per share (in shares)	10,735	10,558	10,705	10,452