BUSINESS SEGMENT AND GEOGRAPHIC REGION INFORMATION - Business Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Segment Information
Net sales	$ 20,752	$ 19,628	$ 17,858
Intangible asset amortization expense	(483)
Interest expense - net	(144)	(144)	(149)
Pension and other postretirement benefits income (expense)	(54)	(53)	(210)
Restructuring charges	(33)	(78)	(214)
Income before income taxes	2,911	2,896	1,746
Income tax expense	445	750	331
Net income	2,465	2,146	1,415
Less net income for noncontrolling interests	(4)	(2)	(5)
Net income attributable to Eaton ordinary shareholders	2,462	2,144	1,410
Electrical Americas
Business Segment Information
Net sales	8,497	7,242	6,680
Electrical Global
Business Segment Information
Net sales	5,848	5,516	4,703
Hydraulics
Business Segment Information
Net sales	0	1,300	1,842
Aerospace
Business Segment Information
Net sales	3,039	2,648	2,223
Vehicle
Business Segment Information
Net sales	2,830	2,579	2,118
eMobility
Business Segment Information
Net sales	538	343	292
Operating segments
Business Segment Information
Net sales	20,752	19,628	17,858
Segment operating profit (loss)	4,196	3,706	2,937
Operating segments | Electrical Americas
Business Segment Information
Net sales	8,497	7,242	6,680
Segment operating profit (loss)	1,913	1,495	1,352
Restructuring charges	(17)	(14)	(18)
Operating segments | Electrical Global
Business Segment Information
Net sales	5,848	5,516	4,703
Segment operating profit (loss)	1,134	1,034	750
Restructuring charges	(14)	(18)	(55)
Operating segments | Hydraulics
Business Segment Information
Net sales	0	1,300	1,842
Segment operating profit (loss)	0	177	186
Operating segments | Aerospace
Business Segment Information
Net sales	3,039	2,648	2,223
Segment operating profit (loss)	705	580	414
Restructuring charges	(8)	(8)	(34)
Operating segments | Vehicle
Business Segment Information
Net sales	2,830	2,579	2,118
Segment operating profit (loss)	453	449	243
Restructuring charges	15	(21)	(102)
Operating segments | eMobility
Business Segment Information
Net sales	538	343	292
Segment operating profit (loss)	(9)	(29)	(8)
Restructuring charges	(1)	(1)	(1)
Corporate
Business Segment Information
Intangible asset amortization expense	(499)	(444)	(354)
Interest expense - net	(144)	(144)	(149)
Pension and other postretirement benefits income (expense)	43	65	(40)
Restructuring charges	(8)	(16)	(4)
Other expense - net	$ (653)	$ (209)	$ (434)