DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Amounts Recognized in Other Comprehensive Income and Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Gain (loss) recognized in other comprehensive income (loss)
Total	$ 92	$ (39)
Gain (loss) reclassified from Accumulated other comprehensive loss
Total	15	15
Gain (loss) on sale of business \| Net Investment Hedging
Gain (loss) recognized in other comprehensive income (loss)
Non-derivative designated as net investment hedges	72	(63)
Gain (loss) reclassified from Accumulated other comprehensive loss
Non-derivative designated as net investment hedges	0	0
Forward starting floating-to-fixed interest rate swaps \| Interest expense - net \| Cash flow hedging
Gain (loss) recognized in other comprehensive income (loss)
Derivatives designated as cash flow hedges	2	0
Gain (loss) reclassified from Accumulated other comprehensive loss
Derivatives designated as cash flow hedges	3	3
Currency exchange contracts \| Interest expense - net \| Net Investment Hedging \| Derivatives designated as hedges
Gain (loss) recognized in other comprehensive income (loss)
Amount excluded from effectiveness testing	3	5
Gain (loss) reclassified from Accumulated other comprehensive loss
Amount excluded from effectiveness testing	4	1
Currency exchange contracts \| Net sales and Cost of products sold \| Cash flow hedging
Gain (loss) recognized in other comprehensive income (loss)
Derivatives designated as cash flow hedges	3	31
Gain (loss) reclassified from Accumulated other comprehensive loss
Derivatives designated as cash flow hedges	8	11
Currency exchange contracts \| Gain (loss) on sale of business \| Net Investment Hedging \| Derivatives designated as hedges
Gain (loss) recognized in other comprehensive income (loss)
Effective portion	11	(14)
Gain (loss) reclassified from Accumulated other comprehensive loss
Effective portion	0	0
Commodity contracts \| Cost of products sold \| Cash flow hedging
Gain (loss) recognized in other comprehensive income (loss)
Derivatives designated as cash flow hedges	1	2
Gain (loss) reclassified from Accumulated other comprehensive loss
Derivatives designated as cash flow hedges	$ (1)	$ 0

Amounts Reclassified From Accumulated Other Comprehensive Income (Loss)

No definition available.

Name:	etn_AmountsReclassifiedFromAccumulatedOtherComprehensiveIncomeLossAbstract
Namespace Prefix:	etn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amounts Recognized In Other Comprehensive Income (Loss)

+ References

No definition available.

+ Details

Name:	etn_AmountsRecognizedInOtherComprehensiveIncomeLossAbstract
Namespace Prefix:	etn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	etn_DerivativeInstrumentsCashFlowHedgeAndNetInvestmentHedgeGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
Namespace Prefix:	etn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

Name:	etn_DerivativeInstrumentsNetInvestmentHedgeGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
Namespace Prefix:	etn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Income (Loss), Net Investment Hedge, Gain (loss), Amount Excluded From Effectiveness Testing, Net

+ References

No definition available.

+ Details

Name:	etn_IncomeLossNetInvestmentHedgeGainLossAmountExcludedFromEffectivenessTestingNet
Namespace Prefix:	etn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Other Comprehensive Income (Loss), Cash Flow Hedge And Net Investment Hedge, Gain (Loss), Before Reclassification And Tax

+ References

No definition available.

+ Details

Name:	etn_OtherComprehensiveIncomeLossCashFlowHedgeAndNetInvestmentHedgeGainLossBeforeReclassificationAndTax
Namespace Prefix:	etn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), Amount Excluded From Effectiveness Testing, Net

+ References

No definition available.

+ Details

Name:	etn_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossAmountExcludedFromEffectivenessTestingNet
Namespace Prefix:	etn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), Effective Portion, Net

+ References

No definition available.

+ Details

Name:	etn_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossEffectivePortionNet
Namespace Prefix:	etn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480627/815-20-45-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-10A

+ Details

Name:	us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

+ Details

Name:	us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4CCC
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4CCC

+ Details

Name:	us-gaap_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4CCC
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4CCC

+ Details

Name:	us-gaap_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_IncomeStatementLocationAxis=etn_GainLossOnDispositionOfBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_NetInvestmentHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=etn_ForwardStartingFloatingtoFixedInterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_InterestExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=etn_NetsalesandCostofproductssoldMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: