v3.3.1.900
Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details)
$ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Accounting Policies [Abstract]      
Net sales $ 20,855 $ 22,552 $ 22,046
Number of Eaton employees 97,000    
Countries of operation over 60    
Countries where products are sold 175    
Minimum [Member]      
Investments in associate companies [Line Items]      
Equity method of accounting, ownership interest 20.00%    
Maximum [Member]      
Investments in associate companies [Line Items]      
Equity method of accounting, ownership interest 50.00%