CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net sales	$ 5,215	$ 3,856	$ 9,907	$ 8,645
Cost of products sold	3,545	2,877	6,729	6,179
Selling and administrative expense	876	691	1,671	1,556
Research and development expense	154	126	302	279
Interest expense - net	37	38	75	72
Gain on sale of business	0	0	0	221
Other (income) expense - net	(17)	77	(28)	112
Income before income taxes	620	47	1,158	668
Income tax expense (benefit)	114	(7)	193	176
Net income	506	54	965	492
Less net income for noncontrolling interests	0	(3)	(1)	(3)
Net Income Attributable to Eaton ordinary shareholders	$ 506	$ 51	$ 964	$ 489
Net income per share attributable to Eaton ordinary shareholders
Diluted (USD per share)	$ 1.26	$ 0.13	$ 2.40	$ 1.20
Basic (USD per share)	$ 1.27	$ 0.13	$ 2.42	$ 1.21
Weighted-average number of ordinary shares outstanding
Diluted (shares)	401.4	401.3	401.2	406.2
Basic (shares)	398.8	400.4	398.6	404.8
Cash dividends declared per ordinary share (USD per share)	$ 0.76	$ 0.73	$ 1.52	$ 1.46