FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Long-term debt and current portion of long term debt, carrying value	$ 9,892	$ 9,152
Long-term debt and current portion of long-term debt, fair value	$ 9,604	$ 8,651

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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+ Details

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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+ Details

Eaton Corp plc 10-Q