RETIREMENT BENEFITS - Sensitivities of Certain Key Assumptions (Details) - Pension Plans - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans
Effect of one-percentage-point increase in discount rates	$ 23	$ 23	$ 22
Effect of one-percentage-point decrease in discount rates	(26)	(27)	(26)
Effect of one-percentage-point increase on benefits earned and interest cost for U.S. postretirement plans	(100)	(106)	(112)
Effect of one-percentage-point decrease on benefits earned and interest cost for U.S. postretirement plans	100	106	112
Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans
Effect of one-percentage-point increase in discount rates	(10)	(13)	(12)
Effect of one-percentage-point decrease in discount rates	19	21	20
Effect of one-percentage-point increase on benefits earned and interest cost for U.S. postretirement plans	(59)	(53)	(54)
Effect of one-percentage-point decrease on benefits earned and interest cost for U.S. postretirement plans	$ 59	$ 53	$ 54

The effect of a one-percentage-point decrease in the discount rates on pension expenses.

No definition available.

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- Definition

The effect of a one-percentage-point decrease in the expected rates of return on pension expenses.

+ References

No definition available.

+ Details

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- Definition

The effect of a one-percentage-point increase in the discount rates on pension expenses.

+ References

No definition available.

+ Details

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- Definition

The effect of a one-percentage-point increase in the expected rates of return on pension expenses.

+ References

No definition available.

+ Details

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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.

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