EATON SHAREHOLDERS' EQUITY - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 17,075	$ 16,451	$ 14,973
Other comprehensive income (loss) before reclassifications	88
Amounts reclassified from Accumulated other comprehensive loss (income)	(49)
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	39	(313)	562
Balance at end of period	19,069	17,075	16,451
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(3,946)
Balance at end of period	(3,906)	(3,946)
Currency translation and related hedging instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(3,264)
Other comprehensive income (loss) before reclassifications	247
Amounts reclassified from Accumulated other comprehensive loss (income)	(12)
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	235
Balance at end of period	(3,029)	(3,264)
Pensions and other postretirement benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(810)
Other comprehensive income (loss) before reclassifications	(209)
Amounts reclassified from Accumulated other comprehensive loss (income)	24	89	140
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	(185)
Balance at end of period	(995)	(810)
Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	129
Other comprehensive income (loss) before reclassifications	50
Amounts reclassified from Accumulated other comprehensive loss (income)	(61)	(7)	$ (2)
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	(11)
Balance at end of period	$ 118	$ 129