Other Liabilities and Deferred Revenue (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Accounts Payable and Accrued Liabilities, Current [Abstract]
Dealer and dealers’ customer allowances and claims	$ 10,636	$ 9,219
Deferred Revenue	2,754	2,404
Employee benefit plans	1,725	2,020
Accrued interest	1,100	935
OPEB (a)	329	329
Pension (a)	197	196
Operating lease liabilities	473	404
Other (b)	6,603	5,590
Total current other liabilities and deferred revenue	23,817	21,097
Accounts Payable and Accrued Liabilities, Noncurrent [Abstract]
Dealer and dealers’ customer allowances and claims	7,767	6,095
Pension (a)	5,967	5,673
OPEB (a)	4,055	4,130
Deferred Revenue	4,938	4,883
Operating lease liabilities	1,407	1,101
Employee benefit plans	825	834
Other (b)	2,892	2,781
Total non-current other liabilities and deferred revenue	27,851	25,497
Net pension assets	5,900	5,700
Derivative Liability, Current	1,400	1,300
Derivative Liability, Noncurrent	$ 1,500	$ 1,700
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total current other liabilities and deferred revenue
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total non-current other liabilities and deferred revenue
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total current other liabilities and deferred revenue
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total non-current other liabilities and deferred revenue