EATON SHAREHOLDERS' EQUITY - Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pre-tax
Other Comprehensive Income (Loss), before Tax, Total	$ (17)	$ (205)	$ 735
After-tax
Amounts reclassified from Accumulated other comprehensive loss (income)	(49)
Other Comprehensive Income (Loss), Net of Tax, Total	39	(313)	562
Currency translation and related hedging instruments
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	252	(632)	(335)
Reclassification from AOCI, pre-tax	0	0	369
Amortization of gains on net investment hedges (amount excluded from effectiveness testing) reclassified to earnings	(12)	0	0
Other Comprehensive Income (Loss), before Tax, Total	241	(632)	34
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	247	(647)	(339)
Amounts reclassified from Accumulated other comprehensive loss (income)	0	0	369
Amortization of gains on net investment hedges (amount excluded from effectiveness testing) reclassified to earnings	(12)	0	0
Other Comprehensive Income (Loss), Net of Tax, Total	235	(647)	30
Pensions and other postretirement benefits
Pre-tax
Reclassification from AOCI, pre-tax	32	116	183
Other Comprehensive Income (Loss), before Tax, Total	(243)	226	654
After-tax
Amounts reclassified from Accumulated other comprehensive loss (income)	24	89	140
Other Comprehensive Income (Loss), Net of Tax, Total	(185)	175	495
Prior service credit (cost) arising during the year
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	0	0	(1)
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	0	0	(1)
Net gain (loss) arising during the year
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	(246)	45	448
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	(189)	31	337
Currency translation
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	(29)	65	24
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	(21)	56	19
Cash flow hedges
Pre-tax
Other comprehensive income (loss) arising during the year, before reclassifications, pre-tax	63	210	50
Reclassification from AOCI, pre-tax	(78)	(9)	(3)
Other Comprehensive Income (Loss), before Tax, Total	(14)	201	47
After-tax
Other comprehensive income (loss) arising during the year, before reclassifications, after-tax	50	166	39
Amounts reclassified from Accumulated other comprehensive loss (income)	(61)	(7)	(2)
Other Comprehensive Income (Loss), Net of Tax, Total	$ (11)	$ 159	$ 37