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Business Acquisition and Dispositions - Estimated fair value and average life (Details) - USD ($)
$ in Millions
Jul. 03, 2017
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]      
Indefinite-lived intangible assets   $ 2,242 $ 2,222
Total   $ 5,381 $ 5,719
GE Transaction Agreement      
Business Acquisition [Line Items]      
Total $ 4,005    
GE Transaction Agreement | Trade name - Baker Hughes      
Business Acquisition [Line Items]      
Indefinite-lived intangible assets 2,100    
GE Transaction Agreement | In-process research and development      
Business Acquisition [Line Items]      
Indefinite-lived intangible assets 70    
GE Transaction Agreement | Customer relationships      
Business Acquisition [Line Items]      
Finite-lived intangible assets acquired $ 1,240    
Weighted Average Life (Years) 15 years    
GE Transaction Agreement | Patents and technology      
Business Acquisition [Line Items]      
Finite-lived intangible assets acquired $ 465    
Weighted Average Life (Years) 10 years    
GE Transaction Agreement | Capitalized software      
Business Acquisition [Line Items]      
Finite-lived intangible assets acquired $ 64    
Weighted Average Life (Years) 2 years    
GE Transaction Agreement | Trade names - other      
Business Acquisition [Line Items]      
Finite-lived intangible assets acquired $ 45    
Weighted Average Life (Years) 10 years    
GE Transaction Agreement | Favorable lease contracts & others      
Business Acquisition [Line Items]      
Finite-lived intangible assets acquired $ 21    
Weighted Average Life (Years) 10 years