DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Financial Instrument Recognized in the Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Derivatives designated as hedges \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument	$ 6	$ 17
Derivatives designated as hedges \| Other noncurrent assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument	2	3
Derivatives designated as hedges \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument	15	9
Derivatives designated as hedges \| Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument	0	4
Derivatives designated as hedges \| Cash flow hedging \| Currency exchange contracts
Derivatives, Fair Value [Line Items]
Notional amount	561	505
Derivatives designated as hedges \| Cash flow hedging \| Currency exchange contracts \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument	3	17
Derivatives designated as hedges \| Cash flow hedging \| Currency exchange contracts \| Other noncurrent assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument	2	3
Derivatives designated as hedges \| Cash flow hedging \| Currency exchange contracts \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument	15	7
Derivatives designated as hedges \| Cash flow hedging \| Currency exchange contracts \| Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument	0	1
Derivatives designated as hedges \| Cash flow hedging \| Commodity contracts
Derivatives, Fair Value [Line Items]
Notional amount	23	54
Derivatives designated as hedges \| Cash flow hedging \| Commodity contracts \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument	3	1
Derivatives designated as hedges \| Cash flow hedging \| Commodity contracts \| Other noncurrent assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument	0	0
Derivatives designated as hedges \| Cash flow hedging \| Commodity contracts \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument	0	1
Derivatives designated as hedges \| Cash flow hedging \| Commodity contracts \| Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument	0	0
Derivatives designated as hedges \| Cash flow hedging \| Forward starting floating-to-fixed interest rate swaps
Derivatives, Fair Value [Line Items]
Notional amount		$ 165
Term		8 years
Derivatives designated as hedges \| Cash flow hedging \| Forward starting floating-to-fixed interest rate swaps \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument		$ 0
Derivatives designated as hedges \| Cash flow hedging \| Forward starting floating-to-fixed interest rate swaps \| Other noncurrent assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument		0
Derivatives designated as hedges \| Cash flow hedging \| Forward starting floating-to-fixed interest rate swaps \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument		0
Derivatives designated as hedges \| Cash flow hedging \| Forward starting floating-to-fixed interest rate swaps \| Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument		3
Derivatives designated as hedges \| Net Investment Hedging \| Currency exchange contracts
Derivatives, Fair Value [Line Items]
Notional amount	$ 548	$ 564
Term	3 months	3 months
Derivatives designated as hedges \| Net Investment Hedging \| Currency exchange contracts \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument	$ 0	$ 0
Derivatives designated as hedges \| Net Investment Hedging \| Currency exchange contracts \| Other noncurrent assets
Derivatives, Fair Value [Line Items]
Derivative asset designated as hedging instrument	0	0
Derivatives designated as hedges \| Net Investment Hedging \| Currency exchange contracts \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument	0	1
Derivatives designated as hedges \| Net Investment Hedging \| Currency exchange contracts \| Other noncurrent liabilities
Derivatives, Fair Value [Line Items]
Derivative liability designated as hedging instrument	0	0
Derivatives not designated as Hedges \| Currency exchange contracts
Derivatives, Fair Value [Line Items]
Notional amount	4,441	4,797
Derivatives not designated as Hedges \| Currency exchange contracts \| Other current assets
Derivatives, Fair Value [Line Items]
Derivative asset not designated as hedging instrument	6	12
Derivatives not designated as Hedges \| Currency exchange contracts \| Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability not designated as hedging instrument	$ 15	$ 8
Minimum \| Derivatives designated as hedges \| Cash flow hedging \| Currency exchange contracts
Derivatives, Fair Value [Line Items]
Term	1 month	1 month
Minimum \| Derivatives designated as hedges \| Cash flow hedging \| Commodity contracts
Derivatives, Fair Value [Line Items]
Term	1 month	1 month
Minimum \| Derivatives not designated as Hedges \| Currency exchange contracts
Derivatives, Fair Value [Line Items]
Term	1 month	1 month
Maximum \| Derivatives designated as hedges \| Cash flow hedging \| Currency exchange contracts
Derivatives, Fair Value [Line Items]
Term	19 months	25 months
Maximum \| Derivatives designated as hedges \| Cash flow hedging \| Commodity contracts
Derivatives, Fair Value [Line Items]
Term	11 months	12 months
Maximum \| Derivatives not designated as Hedges \| Currency exchange contracts
Derivatives, Fair Value [Line Items]
Term	9 months	7 months

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483444/210-20-55-22

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483466/210-20-50-3

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483444/210-20-55-7

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-SubTopic 20
-Topic 860
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-4D

+ Details

Name:	us-gaap_DerivativeFairValueOfDerivativeAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

+ Details

Name:	us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B

+ Details

Name:	us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability.

+ References

+ Details

Name:	us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

+ Details

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeRemainingMaturity1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_DerivativesFairValueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
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_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
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_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_NetInvestmentHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: