Calculation of Net Income per Ordinary Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Calculation of net income per ordinary share attributable to ordinary shareholders
Net income attributable to Eaton ordinary shareholders	$ 439	$ 378
Weighted-average number of ordinary shares outstanding - diluted	478.8	475.1
Less dilutive effect of equity-based compensation	3.0	3.2
Weighted-average number of ordinary shares outstanding - basic	475.8	471.9
Stock options excluded from calculation of diluted net income per ordinary share	0.1	0.1
Net income per ordinary share
Diluted	$ 0.92	$ 0.79
Basic	$ 0.92	$ 0.80