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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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COMMITMENTS AND CONTINGENT LIABILITIES (Details) - USD ($) $ in Millions			1 Months Ended	3 Months Ended
	Sep. 10, 2026	Aug. 03, 2025	Aug. 31, 2026	Sep. 30, 2026	Jun. 30, 2026	Dec. 31, 2025
Loss Contingencies [Line Items]
Total indemnified liabilities accrued under the MOU				$ 75
Indemnification liabilities, potential maximum exposure				100
Total environmental related liabilities				55		$ 46
Consent Order For The State Of New Jersey Matters
Loss Contingencies [Line Items]
Amount awarded to other party		$ 875
Settlement payment period		25 years
Litigation settlement payment				27
Accrued portion of contingent payment				43
Escrow fund contributions contingent upon court approved settlement				47
Consent Order For The State Of New Jersey Matters \| DuPont and Corteva
Loss Contingencies [Line Items]
Estimated PFAS-related insurance proceeds			$ 150
Minimum fees associated with PFAS-related insurance proceeds			35
Maximum fees associated with PFAS-related insurance proceeds			$ 3
Variable interest rate on estimated fees associated with PFAS-related insurance proceeds			2.00%
Consent Order For The State Of North Carolina And Municipalities
Loss Contingencies [Line Items]
Amount awarded to other party	$ 455
Settlement payment period	15 years
Indemnification liability				44	$ 43
Indemnification liability percentage of after-tax liability					44.00%
Interest accretion				$ 1
Applicable Qnity Percentage
Loss Contingencies [Line Items]
Related party transaction, rate				44.00%
DuPont
Loss Contingencies [Line Items]
Total indemnified liabilities accrued under the MOU				$ 212
Qualified spend, eligible PFAS costs, life to date				1,010
DuPont \| Consent Order For The State Of New Jersey Matters
Loss Contingencies [Line Items]
Litigation settlement payment				71
Accrued portion of contingent payment				120
DuPont \| Consent Order For The State Of North Carolina And Municipalities
Loss Contingencies [Line Items]
Accrued portion of contingent payment					$ 125
Indemnification liability				127
Interest accretion				2
DuPont and Corteva \| Consent Order For The State Of New Jersey Matters
Loss Contingencies [Line Items]
Escrow fund contributions contingent upon court approved settlement			$ 150
Location, Statement of Financial Position, Balance [Axis]: us-gaap:AccruedLiabilitiesCurrent
Loss Contingencies [Line Items]
Total indemnified liabilities accrued under the MOU				81		80
Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesNoncurrent
Loss Contingencies [Line Items]
Total indemnified liabilities accrued under the MOU				$ 137		$ 110