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Equity - Narrative (Details) - $ / shares
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2019
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Jul. 02, 2017
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash dividend | Class A                              
Class of Stock [Line Items]                              
Dividends per share (in dollars per share)   $ 0.18 $ 0.18 $ 0.18 $ 0.18 $ 0.18 $ 0.18 $ 0.18 $ 0.18 $ 0.72 $ 0.35   $ 0.72 $ 0.72 $ 0.35
Baker Hughes Incorporated [Member] | General Electric Company | Class B                              
Class of Stock [Line Items]                              
Approximate interest 50.30%                     36.80%