CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 4,843	$ 4,692
Cost of products sold	3,269	3,184
Selling and administrative expense	790	795
Research and development expense	165	148
Interest expense - net	32	38
Gain on sale of business	24	0
Other income - net	(8)	(11)
Income before income taxes	619	538
Income tax expense	86	79
Net income	533	459
Less net income for noncontrolling interests	(1)	(1)
Net income attributable to Eaton ordinary shareholders	$ 532	$ 458
Net income per share attributable to Eaton ordinary shareholders
Diluted (USD per share)	$ 1.33	$ 1.14
Basic (USD per share)	$ 1.33	$ 1.15
Weighted-average number of ordinary shares outstanding
Diluted (shares)	401.8	400.9
Basic (shares)	399.2	398.3
Cash dividends declared per ordinary share (USD per share)	$ 0.81	$ 0.76