Accounting Policies and Supplemental Disclosures - Calculation of Diluted Shares (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Accounting Policies [Abstract]
Shares used in computation of basic earnings per share (in shares)	10,674	10,501	10,638	10,447
Total dilutive effect of outstanding stock awards (in shares)	171	234	177	258
Shares used in computation of diluted earnings per share (in shares)	10,845	10,735	10,815	10,705