DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Income Effect of Derivative Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Derivative [Line Items]
Commodity contracts	$ (61)	$ 291	$ 71	$ (248)
Derivatives not designated as hedging instruments	168	(209)	206	109
Designated as Hedging Instrument \| Cash flow hedges \| Foreign currency exchange contracts
Derivative [Line Items]
Foreign currency exchange contracts	6	(23)	3	72
Gains/(losses) on derivative instruments	(73)	331	156	(274)
Designated as Hedging Instrument \| Cash flow hedges \| Commodity contracts
Derivative [Line Items]
Commodity contracts	36	0	123	10
Gains/(losses) on derivative instruments	35	30	75	38
Designated as Hedging Instrument \| Fair value hedges \| Interest rate contracts
Derivative [Line Items]
Net interest settlements and accruals on hedging instruments	0	(45)	(14)	(137)
Fair value changes on hedging instruments	(861)	34	(1,226)	598
Fair value changes on hedged debt	832	(33)	1,188	(576)
Designated as Hedging Instrument \| Fair value hedges \| Cross-currency interest rate swap contracts
Derivative [Line Items]
Net interest settlements and accruals on hedging instruments	(15)	(23)	(41)	(66)
Fair value changes on hedging instruments	(193)	(14)	(433)	490
Fair value changes on hedged debt	189	(1)	422	(476)
Derivatives not designated as hedging instruments \| Foreign currency exchange contracts
Derivative [Line Items]
Derivatives not designated as hedging instruments	23	(55)	(13)	(64)
Derivatives not designated as hedging instruments \| Foreign currency exchange contracts \| Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold
Derivative [Line Items]
Derivatives not designated as hedging instruments	(20)	(61)	(132)	65
Derivatives not designated as hedging instruments \| Foreign currency exchange contracts \| Income Statement Location [Axis]: us-gaap:NonoperatingIncomeExpense
Derivative [Line Items]
Derivatives not designated as hedging instruments	43	6	119	(129)
Derivatives not designated as hedging instruments \| Commodity contracts
Derivative [Line Items]
Derivatives not designated as hedging instruments	23	0	51	22
Derivatives not designated as hedging instruments \| Interest rate contracts
Derivative [Line Items]
Derivatives not designated as hedging instruments	173	0	265	(63)
Derivatives not designated as hedging instruments \| Cross-currency interest rate swap contracts
Derivative [Line Items]
Derivatives not designated as hedging instruments	$ (45)	$ (49)	$ (119)	$ 299

Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

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-SubTopic 10
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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Net gain (loss) relating to components of the gain (loss) on the fair value hedging instrument excluded from the assessment of fair value hedge effectiveness. Recognized in earnings.

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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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