FINANCIAL INSTRUMENTS - Gross Impact of Changes in Fair Value of Derivatives Designated as Cash Flow Hedges on AOCI and Net Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (Loss) Recognized in Accumulated other comprehensive loss	$ (22)	$ 24	$ (59)	$ 2
Gain (Loss) Reclassified from Accumulated other comprehensive loss	1	10	10	(1)
Income Statement Location [Axis]: us-gaap:CostOfRevenue \| Foreign exchange contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (Loss) Reclassified from Accumulated other comprehensive loss	(8)	5	(10)	(3)
Income Statement Location [Axis]: us-gaap:InterestExpenseOperating \| Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (Loss) Recognized in Accumulated other comprehensive loss	1	(22)	17	(35)
Gain (Loss) Reclassified from Accumulated other comprehensive loss	10	7	21	10
Income Statement Location [Axis]: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax \| Foreign exchange contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (Loss) Recognized in Accumulated other comprehensive loss	(23)	46	(76)	37
Gain (Loss) Reclassified from Accumulated other comprehensive loss	(2)	(2)	(2)	(4)
Income Statement Location [Axis]: cnhi:OtherOperatingAndNonoperatingExpenseNet \| Foreign exchange contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (Loss) Reclassified from Accumulated other comprehensive loss	$ 1	$ 0	$ 1	$ (4)

- Definition

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