Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3)

v3.8.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Goodwill Disclosure      
Goodwill $ 1,082 $ 480 $ 482
Percentage of total goodwill by a single reporting unit 36.00%    
Percentage of Acquisition Goodwill to Total Goodwill, Eaton Cummins Automated Transmission Technologies 50.00%    
Percentage of Acquisition Goodwill to Total Goodwill, Brammo Inc. 4.00%    
Research and Development      
Research and development expenses, net of contract reimbursements $ 734 616 718
Research and Development Arrangement, Contract to Perform for Others, Compensation Earned $ 137 $ 131 $ 98
Minimum | Other Intangible Assets      
Finite Lived Intangible Assets      
Finite-Lived Intangible Asset, Useful Life 3 years    
Minimum | Software      
Finite Lived Intangible Assets      
Finite-Lived Intangible Asset, Useful Life 3 years    
Maximum | Other Intangible Assets      
Finite Lived Intangible Assets      
Finite-Lived Intangible Asset, Useful Life 25 years    
Maximum | Software      
Finite Lived Intangible Assets      
Finite-Lived Intangible Asset, Useful Life 12 years