EATON SHAREHOLDERS' EQUITY - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	$ 3,827	$ 2,911	$ 2,896
Income tax benefit (expense)	(604)	(445)	(750)
Net income attributable to Eaton ordinary shareholders	3,218	$ 2,462	$ 2,144
Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income attributable to Eaton ordinary shareholders	49
Gains and (losses) on net investment hedges (amount excluded from effectiveness testing) | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	12
Income tax benefit (expense)	0
Net income attributable to Eaton ordinary shareholders	12
Pensions and other postretirement benefits | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(32)
Income tax benefit (expense)	8
Net income attributable to Eaton ordinary shareholders	(24)
Gains and (losses) on cash flow hedges | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax benefit (expense)	(16)
Net income attributable to Eaton ordinary shareholders	61
Gains and (losses) on cash flow hedges | Reclassification out of Accumulated Other Comprehensive Loss | Floating-to-fixed interest rate swaps
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	13
Gains and (losses) on cash flow hedges | Reclassification out of Accumulated Other Comprehensive Loss | Currency exchange contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	64
Gains and (losses) on cash flow hedges | Reclassification out of Accumulated Other Comprehensive Loss | Commodity contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	$ 1