EQUITY - Calculation of Net Income per Ordinary Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Calculation of net income per ordinary share attributable to ordinary shareholders
Net income attributable to Eaton ordinary shareholders	$ 638	$ 532
Weighted-average number of ordinary shares outstanding - diluted (shares)	400.5	401.8
Less dilutive effect of equity-based compensation (shares)	2.0	2.6
Weighted-average number of ordinary shares outstanding - basic (shares)	398.5	399.2
Net income per share attributable to Eaton ordinary shareholders
Diluted (USD per share)	$ 1.59	$ 1.33
Basic (USD per share)	$ 1.60	$ 1.33