Derivative Financial Instruments - Effect of Hedge Activity on Income and Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Derivative Instruments, Gain (Loss)
Cost	$ 6,974	$ 7,246	$ 13,717	$ 14,107
SG&A expense	4,900	4,855	9,754	9,452
Other (income) and expense	(261)	(81)	(506)	166
Interest expense	423	297	790	607
Cost of services
Derivative Instruments, Gain (Loss)
Cost	5,294	5,399	10,604	10,747
Gains/(losses) of total hedge activity	(3)	13	(5)	28
Cost of sales
Derivative Instruments, Gain (Loss)
Cost	1,587	1,750	2,910	3,165
Gains/(losses) of total hedge activity	2	23	17	35
Cost of financing
Derivative Instruments, Gain (Loss)
Cost	93	96	203	194
Gains/(losses) of total hedge activity	(3)	1	(7)	(1)
SG&A expense
Derivative Instruments, Gain (Loss)
SG&A expense	4,900	4,855	9,754	9,452
Gains/(losses) of total hedge activity	43	(152)	102	(223)
Other (income) and expense
Derivative Instruments, Gain (Loss)
Other (income) and expense	(261)	(81)	(506)	166
Gains/(losses) of total hedge activity	(141)	(439)	1	(541)
Interest expense
Derivative Instruments, Gain (Loss)
Interest expense	423	297	790	607
Gains/(losses) of total hedge activity	$ (18)	$ 3	$ (31)	$ (3)