Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income/(Loss) before income taxes (in millions)
Income/(Loss) before income taxes	$ 7,233	$ 3,967	$ (3,016)
Current Federal Tax Expense (Benefit)	78	62	68
Current
Non-U.S.	791	948	781
State and local	107	229	123
Total current	976	1,239	972
Deferred
Federal	25	(413)	(2,292)
Non-U.S.	303	(1,149)	688
State and local	35	(39)	(232)
Total deferred	363	(1,601)	(1,836)
Provision for/(Benefit from) income taxes (Note 7)	$ 1,339	$ (362)	$ (864)
Reconciliation of effective tax rate
U.S. statutory tax rate	21.00%	21.00%	21.00%
Non-U.S. tax rate differential	2.90%	(3.40%)	(8.70%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	1.70%	1.90%	2.30%
General business credits	(5.90%)	(15.90%)	13.00%
Nontaxable Foreign Currency Gains and Losses	0.00%	0.00%	(4.20%)
Effective Income Tax Rate Reconciliation, Disposition of Business, Percent	0.00%	(14.70%)	(7.00%)
Effective Income Tax Rate Reconciliation Foreign Operations Taxed In United States	(0.20%)	7.70%	2.80%
Prior year settlements and claims	0.10%	1.20%	1.50%
Effective Income Tax Rate Reconciliation, Export Incentives, Percent	(2.20%)	(3.90%)	2.00%
Enacted change in tax laws	0.40%	0.10%	(2.00%)
Valuation allowances	(1.00%)	(0.70%)	6.20%
Other	1.70%	(2.40%)	1.70%
Effective tax rate	18.50%	(9.10%)	28.60%
Undistributed Foreign Earnings, Deferred Taxes Not Provided	$ 14,700
Deferred tax assets
Net operating loss carryforwards	7,458	$ 7,262
Tax credit carryforwards	7,993	8,944
Research expenditures	4,873	3,799
Dealer and dealers’ customer allowances and claims	3,498	2,752
Employee benefit plans	2,010	2,470
Other foreign deferred tax assets	2,691	3,456
All other	1,995	2,299
Total gross deferred tax assets	30,518	30,982
Less: Valuation allowances	(3,856)	(4,187)
Total net deferred tax assets	26,662	26,795
Deferred tax liabilities
Leasing transactions	3,523	3,253
Depreciation and amortization (excluding leasing transactions)	3,590	3,389
Finance receivables	524	699
Other foreign deferred tax liabilities	1,381	1,255
All other	2,343	2,219
Total deferred tax liabilities	11,361	10,815
Net deferred tax assets/(liabilities)	26,662	26,795
Deferred Tax Assets, Valuation Allowance	3,856	4,187
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			$ (405)
Operating Loss Carryforwards	23,700
Tax Credit Carryforwards	8,000
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Beginning balance	2,913	2,939
Increase – tax positions in prior periods	512	103
Increase – tax positions in current period	11	45
Decrease – tax positions in prior periods	(775)	(79)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(13)	(115)
Lapse of statute of limitations	(5)	(33)
Unrecognized Tax Benefits, Increase Resulting from Foreign Currency Translation	(103)
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation		53
Ending balance	2,540	2,913	2,939
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	2,500	2,900
Unrecognized Tax Benefits, Interest on Income Taxes Expense	21	16	23
Unrecognized Tax Benefits, Interest on Income Taxes Receivable	37	25
Income Taxes Paid, Net	$ 1,218	1,027	801
Tax Credit Carryforward Remaining Carryforward Period	12 years
Deferred Tax Assets, Net	$ 15,301	15,980
Change in Deferred Tax Not Recognized, Undistributed Earnings of Foreign Subsidiaries, Due to Restructuring		610
UNITED STATES
Income/(Loss) before income taxes (in millions)
Income/(Loss) before income taxes	3,424	3,395	(6,548)
Non-US
Income/(Loss) before income taxes (in millions)
Income/(Loss) before income taxes	3,809	$ 572	$ 3,532
OperatingLossCarryforwardNotSubjectToExpiration [Member]
Deferred tax liabilities
Operating Loss Carryforwards	$ 6,100