EATON SHAREHOLDERS' EQUITY - Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pre-tax
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	$ (205)	$ 735	$ 55
After-tax
Amounts reclassified from Accumulated other comprehensive loss (income)	82
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	(313)	562	95
Currency translation and related hedging instruments
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	(632)	(335)	154
Reclassification from AOCI, pre-tax	0	369	37
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	(632)	34	191
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	(647)	(339)	164
Amounts reclassified from Accumulated other comprehensive loss (income)	0	369	37
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	(647)	30	201
Pensions and other postretirement benefits
Pre-tax
Reclassification from AOCI, pre-tax	116	183	221
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	226	654	(93)
After-tax
Amounts reclassified from Accumulated other comprehensive loss (income)	89	140	169
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	175	495	(73)
Prior service credit (cost) arising during the year
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	0	(1)	(1)
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	0	(1)	(1)
Net gain (loss) arising during the year
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	45	448	(263)
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	31	337	(203)
Currency translation
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	65	24	(48)
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	56	19	(37)
Other
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	0	0	(2)
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	0	0	(1)
Cash flow hedges
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	210	50	(60)
Reclassification from AOCI, pre-tax	(9)	(3)	17
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	201	47	(43)
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	166	39	(47)
Amounts reclassified from Accumulated other comprehensive loss (income)	(7)	(2)	14
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	$ 159	$ 37	$ (33)