BUSINESS SEGMENT AND GEOGRAPHIC REGION INFORMATION - Business Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Segment Information
Net Sales	$ 23,196	$ 20,752	$ 19,628
Intangible asset amortization expense	(432)
Interest expense - net	(151)	(144)	(144)
Pension and other postretirement benefits income	(15)	(54)	(53)
Restructuring program charges (income)	(57)	(33)	(78)	$ (214)
Income before income taxes	3,827	2,911	2,896
Income tax expense	604	445	750
Net income	3,223	2,465	2,146
Less net income for noncontrolling interests	(5)	(4)	(2)
Net income attributable to Eaton ordinary shareholders	3,218	2,462	2,144
Electrical Americas
Business Segment Information
Net Sales	10,098	8,497	7,242
Electrical Global
Business Segment Information
Net Sales	6,084	5,848	5,516
Hydraulics
Business Segment Information
Net Sales	0	0	1,300
Aerospace
Business Segment Information
Net Sales	3,413	3,039	2,648
Vehicle
Business Segment Information
Net Sales	2,965	2,830	2,579
eMobility
Business Segment Information
Net Sales	636	538	343
Operating segments
Business Segment Information
Net Sales	23,196	20,752	19,628
Segment operating profit (loss)	5,093	4,196	3,706
Operating segments | Electrical Americas
Business Segment Information
Net Sales	10,098	8,497	7,242
Segment operating profit (loss)	2,675	1,913	1,495
Restructuring program charges (income)	(5)	(17)	(14)	(18)
Operating segments | Electrical Global
Business Segment Information
Net Sales	6,084	5,848	5,516
Segment operating profit (loss)	1,176	1,134	1,034
Restructuring program charges (income)	(26)	(14)	(18)	(55)
Operating segments | Hydraulics
Business Segment Information
Net Sales	0	0	1,300
Segment operating profit (loss)	0	0	177
Operating segments | Aerospace
Business Segment Information
Net Sales	3,413	3,039	2,648
Segment operating profit (loss)	780	705	580
Restructuring program charges (income)	(5)	(8)	(8)	(34)
Operating segments | Vehicle
Business Segment Information
Net Sales	2,965	2,830	2,579
Segment operating profit (loss)	482	453	449
Restructuring program charges (income)	(6)	15	(21)	(102)
Operating segments | eMobility
Business Segment Information
Net Sales	636	538	343
Segment operating profit (loss)	(21)	(9)	(29)
Restructuring program charges (income)	(7)	(1)	(1)	(1)
Corporate
Business Segment Information
Intangible asset amortization expense	(450)	(499)	(444)
Interest expense - net	(151)	(144)	(144)
Pension and other postretirement benefits income	46	43	65
Restructuring program charges (income)	(8)	(8)	(16)	$ (4)
Other expense - net	$ (654)	$ (653)	$ (209)