Financing and Leases - Schedule of Shares Used to Compute Diluted Earnings Per Share (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Disclosure [Abstract]
As reported shares (in shares)	1,092	1,082	1,092	1,070
Effect of stock-based compensation (in shares)	7	6	6	6
Diluted (in shares)	1,099	1,088	1,098	1,076
Antidilutive securities excluded from computation of earnings per share (in shares)	0	0	0	0