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RETIREMENT BENEFITS PLANS - Defined Contribution Plans (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Retirement Benefits [Abstract] |  |  |
Employer contributions to defined contribution plans | $ 182 | $ 171 | $ 111

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- Definition Defined Contribution Plans, Employer Contributions - Amounts charged to expense + References No definition available. + Details
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Namespace Prefix: | etn_
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Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration