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Equity - Narrative (Details) - $ / shares
1 Months Ended
Jul. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Sep. 30, 2019
Dec. 31, 2018
Class of Stock [Line Items]          
Preferred stock authorized (in shares)   50,000,000      
Preferred stock par value (in dollars per share)   $ 0.0001      
General Electric Company | Baker Hughes          
Class of Stock [Line Items]          
Period of complete divestment 3 years        
Ownership percentage by noncontrolling owners   33.80% 36.70%    
Common Class A          
Class of Stock [Line Items]          
Common stock authorized (in shares)   2,000,000,000 2,000,000,000    
Common stock par value (in dollars per share)   $ 0.0001 $ 0.0001    
Common stock outstanding (in shares)   685,000,000 650,000,000    
Common Class A | Common Stock [Member]          
Class of Stock [Line Items]          
Common stock outstanding (in shares)   684,775,000 650,065,000 649,181,000 513,399,000
Common Class B          
Class of Stock [Line Items]          
Common stock authorized (in shares)   1,250,000,000 1,250,000,000    
Common stock par value (in dollars per share)   $ 0.0001 $ 0.0001    
Common stock outstanding (in shares)   349,000,000 377,000,000    
Common Class B | Common Stock [Member]          
Class of Stock [Line Items]          
Common stock outstanding (in shares)   349,440,000 377,428,000 377,428,000 521,543,000