v2.4.0.6
Summary of Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Summary Of Significant Accounting Policies Textuals Abstract      
Net sales $ 16,311 $ 16,049 $ 13,715
Number of Eaton employees 103,000    
Countries of operation over 50    
Countries where products are sold 175    
Equity method of accounting minimum ownership interest 20.00%    
Equity method of accounting maximum ownership interest 50.00%    
Weighted average amortization period for customer relationships 15    
Property, plant and equipment, estimated useful lives 40    
Machinery and equipment useful life range 3 to 10 years    
RSU and awards vesting period three to four years    
Weighted average amortization period for intangible assets 17 years    
Software amortization maximum life 10