EATON SHAREHOLDERS' EQUITY - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 16,451	$ 14,973	$ 16,133
Other comprehensive (loss) income before reclassifications	(395)
Amounts reclassified from Accumulated other comprehensive loss (income)	82
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	(313)	562	95
Balance at end of period	17,075	16,451	14,973
Currency translation and related hedging instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(2,617)
Other comprehensive (loss) income before reclassifications	(647)
Amounts reclassified from Accumulated other comprehensive loss (income)	0
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	(647)
Balance at end of period	(3,264)	(2,617)
Pensions and other postretirement benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(986)
Other comprehensive (loss) income before reclassifications	86
Amounts reclassified from Accumulated other comprehensive loss (income)	89
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	175
Balance at end of period	(810)	(986)
Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(30)
Other comprehensive (loss) income before reclassifications	166
Amounts reclassified from Accumulated other comprehensive loss (income)	(7)
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	159
Balance at end of period	129	(30)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(3,633)	(4,195)	(4,290)
Balance at end of period	$ (3,946)	$ (3,633)	$ (4,195)