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Borrowings - Additional Information (Details) - USD ($) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 03, 2017 | Dec. 31, 2017 | Jun. 30, 2018 | Dec. 11, 2017
Line of Credit Facility [Line Items] |  |  |  |
Estimated fair value of debt |  | $ 8,466,000,000 | $ 7,061,000,000 |
2017 Credit Agreement | Revolving credit facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt instrument, term | 5 years |  |  |
Line of credit facility, maximum borrowing capacity | $ 3,000,000,000 |  |  |
Baker Hughes Co-Obligor, Inc. | BHGE LLC |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Ownership percentage |  | 100.00% |  |
Senior Notes | Private Placement | BHGE LLC |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt instrument, face |  |  |  | $ 3,950,000,000

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