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FINANCIAL INSTRUMENTS - Schedule of notional amounts of outstanding derivatives (Details) $ in Millions	Sep. 30, 2025 USD ($)
Less than 1 year | USD | Sold currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 406
Less than 1 year | USD | Purchased currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	80
Less than 1 year | CHF | Sold currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	38
Less than 1 year | CHF | Purchased currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	120
Less than 1 year | CZK | Sold currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	2
Less than 1 year | CZK | Purchased currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	80
Less than 1 year | Other currencies | Sold currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	13
Less than 1 year | Other currencies | Purchased currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	6
Less than 1 year | Metal | Derivatives that do not qualify for hedge accounting
Derivatives, Fair Value [Line Items]
Derivative, notional amount	387
Less than 1 year | Natural gas | Derivatives that do not qualify for hedge accounting
Derivatives, Fair Value [Line Items]
Derivative, notional amount	19
Over 1 year | USD | Sold currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	356
Over 1 year | USD | Purchased currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	1
Over 1 year | CHF | Sold currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	6
Over 1 year | CHF | Purchased currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	16
Over 1 year | CZK | Sold currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	0
Over 1 year | CZK | Purchased currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	24
Over 1 year | Other currencies | Sold currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	0
Over 1 year | Other currencies | Purchased currencies
Derivatives, Fair Value [Line Items]
Derivative, notional amount	0
Over 1 year | Metal | Derivatives that do not qualify for hedge accounting
Derivatives, Fair Value [Line Items]
Derivative, notional amount	43
Over 1 year | Natural gas | Derivatives that do not qualify for hedge accounting
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 26

X

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

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- Definition

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.

+ References

No definition available.

+ Details

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