Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income/(Loss) before income taxes (in millions)
Income/(Loss) before income taxes	$ 3,967	$ (3,016)	$ 17,780
Current Federal Tax Expense (Benefit)	62	68	102
Current
Non-U.S.	948	781	598
State and local	229	123	26
Total current	1,239	972	726
Deferred
Federal	(413)	(2,292)	2,290
Non-U.S.	(1,149)	688	(3,254)
State and local	(39)	(232)	108
Total deferred	(1,601)	(1,836)	(856)
Provision for/(Benefit from) income taxes (Note 7)	$ (362)	$ (864)	$ (130)
Reconciliation of effective tax rate
U.S. statutory tax rate	21.00%	21.00%	21.00%
Non-U.S. tax rate differential	(3.40%)	(8.70%)	1.30%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	1.90%	2.30%	0.50%
General business credits	(15.90%)	13.00%	(2.30%)
Nontaxable Foreign Currency Gains and Losses	0.00%	(4.20%)	0.00%
Effective Income Tax Rate Reconciliation, Disposition of Business, Percent	(14.70%)	(7.00%)	(18.80%)
Effective Income Tax Rate Reconciliation Foreign Operations Taxed In United States	7.70%	2.80%	2.40%
Prior year settlements and claims	1.20%	1.50%	(0.30%)
Effective Income Tax Rate Reconciliation, Export Incentives, Percent	(3.90%)	2.00%	(0.60%)
Enacted change in tax laws	0.10%	(2.00%)	1.10%
Valuation allowances	(0.70%)	6.20%	(4.70%)
Other	(2.40%)	1.70%	(0.30%)
Effective tax rate	(9.10%)	28.60%	(0.70%)
Undistributed Foreign Earnings, Deferred Taxes Not Provided	$ 14,500
Deferred tax assets
Employee benefit plans	2,470	$ 1,953
Deferred Tax Assets, Operating Loss Carryforwards	7,262	6,809
Net operating loss carryforwards	7,262	6,809
Tax credit carryforwards	8,944	9,354
Research expenditures	3,799	3,240
Dealer and dealers’ customer allowances and claims	2,752	2,192
Other foreign deferred tax assets	3,456	3,107
All other	2,299	2,201
Total gross deferred tax assets	30,982	28,856
Less: Valuation allowances	(4,187)	(4,052)
Total net deferred tax assets	26,795	24,804
Deferred tax liabilities
Leasing transactions	3,253	2,992
Depreciation and amortization (excluding leasing transactions)	3,389	3,116
Finance receivables	699	792
Deferred Tax Liabilities, Investments	0	487
Other foreign deferred tax liabilities	1,255	1,110
All other	2,219	2,304
Total deferred tax liabilities	10,815	10,801
Net deferred tax assets/(liabilities)	26,795	24,804
Deferred Tax Assets, Valuation Allowance	4,187	4,052
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		(405)	$ (918)
Operating Loss Carryforwards	22,000
Tax Credit Carryforwards	8,900
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Beginning balance	2,939	2,910
Increase – tax positions in prior periods	103	338
Increase – tax positions in current period	45	17
Decrease – tax positions in prior periods	(79)	(236)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(115)	(2)
Lapse of statute of limitations	(33)	(1)
Unrecognized Tax Benefits, Increase Resulting from Foreign Currency Translation	53
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation		(87)
Ending balance	2,913	2,939	2,910
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	2,900	2,900
Unrecognized Tax Benefits, Interest on Income Taxes Expense	16	23	(7)
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		17
Income Taxes Paid, Net	$ 1,027	801	568
Tax Credit Carryforward Remaining Carryforward Period	9 years
Deferred Tax Assets, Net	$ 15,980	14,003
Change in Deferred Tax Not Recognized, Undistributed Earnings of Foreign Subsidiaries, Due to Restructuring	610		2,900
Unrecognized Tax Benefits, Interest on Income Taxes Receivable	25
UNITED STATES
Income/(Loss) before income taxes (in millions)
Income/(Loss) before income taxes	3,395	(6,548)	10,043
Non-US
Income/(Loss) before income taxes (in millions)
Income/(Loss) before income taxes	572	$ 3,532	$ 7,737
OperatingLossCarryforwardNotSubjectToExpiration [Member]
Deferred tax liabilities
Operating Loss Carryforwards	$ 6,100