Eaton Shareholders' Equity Eaton Shareholders' Equity - Net Income per Ordinary Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share Reconciliation [Abstract]
Net income attributable to Eaton ordinary shareholders	$ 1,861	$ 1,217	$ 1,350
Weighted-average number of ordinary shares outstanding - diluted	476.7	350.9	342.8
Less dilutive effect of equity-based compensation	3.2	3.1	4.5
Weighted-average number of ordinary shares outstanding - basic	473.5	347.8	338.3
Net income per ordinary share - diluted	$ 3.90	$ 3.46	$ 3.93
Net income per ordinary share - basic	$ 3.93	$ 3.54	$ 3.98