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Equity (Details 1) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Calculation of net income per ordinary share attributable to ordinary shareholders        
Net income attributable to Eaton ordinary shareholders $ 494 $ 382 $ 872 $ 693
Weighted-average number of ordinary shares outstanding - diluted 476.3 339.5 475.7 339.6
Less dilutive effect of equity-based compensation 2.9 2.5 3.1 3.4
Weighted-average number of ordinary shares outstanding - basic 473.4 337.0 472.6 336.2
Net income per ordinary share        
Diluted $ 1.04 $ 1.12 $ 1.83 $ 2.04
Basic $ 1.04 $ 1.13 $ 1.84 $ 2.06