| **Segment Information - Schedule of Revenue by Similar Products and Services (Details) - USD ($) $ in Millions** | 3 Months Ended | 12 Months Ended |
|------------------------------------------------------------------------------------------------------------------|----------------|-----------------|
||
| **Segment Reporting Information**                                                                                |           |            |   |   |   |   |   |   |   |   |   |
| Revenue                                                                                                          | $ 2,410        | $ 2,353         | $ 2,408 | $ 2,670 | $ 3,394 | $ 3,786 | $ 3,968 | $ 4,594 | $ 9,841 | $ 15,742 | $ 24,551 |
| Completion and Production                                                                                        |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                                                |           |            |   |   |   |   |   |   |   |   |   |
| Revenue                                                                                                          |           |            |   |   |   |   |   |   | 5,681 | 8,831 | 14,572 |
| Drilling and Evaluation                                                                                          |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                                                |           |            |   |   |   |   |   |   |   |   |   |
| Revenue                                                                                                          |           |            |   |   |   |   |   |   | 3,141 | 5,696 | 8,615 |
| Industrial Services                                                                                              |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                                                |           |            |   |   |   |   |   |   |   |   |   |
| Revenue                                                                                                          |           |            |   |   |   |   |   |   | $ 1,019 | $ 1,215 | $ 1,364 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688
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| X                                                                                                                                                                                                                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
+ Details**Name:**us-gaap_SegmentReportingInformationLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_ProductOrServiceAxis=bhi_CompletionandProductionMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_ProductOrServiceAxis=bhi_DrillingAndEvaluationMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |
| X                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_ProductOrServiceAxis=bhi_IndustrialServicesMember**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |