BUSINESS SEGMENT INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	$ 5,483	$ 4,843
Intangible asset amortization expense	(124)	(128)
Interest expense - net	(50)	(32)
Pension and other postretirement benefits income	11	19
Restructuring program charges	(10)	(18)	$ (33)	$ (78)	$ (214)
Other expense - net	(148)	(131)
Income before income taxes	762	619
Income tax expense	123	86
Net income	639	533
Less net income for noncontrolling interests	(1)	(1)
Net income attributable to Eaton ordinary shareholders	638	532
Electrical Americas
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	2,294	1,891
Electrical Global
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	1,500	1,437
Aerospace
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	803	718
Vehicle
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	739	671
eMobility
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	147	126
Operating segments
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	5,483	4,843
Segment operating profit (loss)	1,082	909
Operating segments | Electrical Americas
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	2,294	1,891
Segment operating profit (loss)	525	361
Restructuring program charges	(2)	(5)
Operating segments | Electrical Global
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	1,500	1,437
Segment operating profit (loss)	274	279
Restructuring program charges	(3)	(5)
Operating segments | Aerospace
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	803	718
Segment operating profit (loss)	180	159
Restructuring program charges	(1)	(3)
Operating segments | Vehicle
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	739	671
Segment operating profit (loss)	107	113
Restructuring program charges	(2)	(3)
Operating segments | eMobility
Segment Reporting Information, Profit (Loss) [Abstract]
Net sales	147	126
Segment operating profit (loss)	(4)	(3)
Corporate
Segment Reporting Information, Profit (Loss) [Abstract]
Restructuring program charges	$ (1)	$ (2)