CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 533	$ 459
Less net income for noncontrolling interests	(1)	(1)
Net income attributable to Eaton ordinary shareholders	532	458
Other comprehensive income (loss), net of tax
Currency translation and related hedging instruments	(62)	(172)
Pensions and other postretirement benefits	77	47
Cash flow hedges	101	95
Other comprehensive income (loss) attributable to Eaton ordinary shareholders	116	(30)
Total comprehensive income attributable to Eaton ordinary shareholders	$ 648	$ 428