| **Consolidated Statements of Income (USD $)In Millions, except Per Share data, unless otherwise specified** | 12 Months Ended                                                                                          |
|-------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------|
||
| **Revenue:**                                                                                                |                                                                                                     |   |   |
| Sales                                                                                                       | $ 8,056us-gaap_SalesRevenueGoodsNet                                                                      | $ 7,594us-gaap_SalesRevenueGoodsNet | $ 7,274us-gaap_SalesRevenueGoodsNet |
| Services                                                                                                    | 16,495us-gaap_SalesRevenueServicesNet                                                                    | 14,770us-gaap_SalesRevenueServicesNet | 14,087us-gaap_SalesRevenueServicesNet |
| Total revenue                                                                                               | 24,551us-gaap_SalesRevenueNet                                                                            | 22,364us-gaap_SalesRevenueNet | 21,361us-gaap_SalesRevenueNet |
| **Costs and expenses:**                                                                                     |                                                                                                     |   |   |
| Cost of sales                                                                                               | 6,294us-gaap_CostOfGoodsSold                                                                             | 5,932us-gaap_CostOfGoodsSold | 5,758us-gaap_CostOfGoodsSold |
| Cost of services                                                                                            | 13,452us-gaap_CostOfServices                                                                             | 12,621us-gaap_CostOfServices | 11,598us-gaap_CostOfServices |
| Research and engineering                                                                                    | 613us-gaap_ResearchAndDevelopmentExpense                                                                 | 556us-gaap_ResearchAndDevelopmentExpense | 497us-gaap_ResearchAndDevelopmentExpense |
| Marketing, general and administrative                                                                       | 1,271us-gaap_SellingGeneralAndAdministrativeExpense                                                      | 1,306us-gaap_SellingGeneralAndAdministrativeExpense | 1,316us-gaap_SellingGeneralAndAdministrativeExpense |
| Litigation settlements                                                                                      | 62us-gaap_LitigationSettlementAmount                                                                     | 0us-gaap_LitigationSettlementAmount | 0us-gaap_LitigationSettlementAmount |
| Total costs and expenses                                                                                    | 21,692us-gaap_CostsAndExpenses                                                                           | 20,415us-gaap_CostsAndExpenses | 19,169us-gaap_CostsAndExpenses |
| Operating income                                                                                            | 2,859us-gaap_OperatingIncomeLoss                                                                         | 1,949us-gaap_OperatingIncomeLoss | 2,192us-gaap_OperatingIncomeLoss |
| Interest expense, net                                                                                       | (232)us-gaap_InterestExpense                                                                             | (234)us-gaap_InterestExpense | (210)us-gaap_InterestExpense |
| Income before income taxes                                                                                  | 2,627us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 1,715us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 1,982us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest |
| Income taxes                                                                                                | (896)us-gaap_IncomeTaxExpenseBenefit                                                                     | (612)us-gaap_IncomeTaxExpenseBenefit | (665)us-gaap_IncomeTaxExpenseBenefit |
| Net income                                                                                                  | 1,731us-gaap_ProfitLoss                                                                                  | 1,103us-gaap_ProfitLoss | 1,317us-gaap_ProfitLoss |
| Net income attributable to noncontrolling interests                                                         | (12)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest                                            | (7)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (6)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |
| Net income attributable to Baker Hughes                                                                     | $ 1,719us-gaap_NetIncomeLoss                                                                             | $ 1,096us-gaap_NetIncomeLoss | $ 1,311us-gaap_NetIncomeLoss |
| **Earnings Per Share**                                                                                      |                                                                                                     |   |   |
| Basic earnings per share attributable to Baker Hughes                                                       | $ 3.93us-gaap_EarningsPerShareBasic                                                                      | $ 2.47us-gaap_EarningsPerShareBasic | $ 2.98us-gaap_EarningsPerShareBasic |
| Diluted earnings per share attributable to Baker Hughes                                                     | $ 3.92us-gaap_EarningsPerShareDiluted                                                                    | $ 2.47us-gaap_EarningsPerShareDiluted | $ 2.97us-gaap_EarningsPerShareDiluted |

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| - Definition
Total costs related to goods produced and sold during the reporting period.
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| - Definition
Total costs related to services rendered by an entity during the reporting period.
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| - Definition
Total costs of sales and operating expenses for the period.
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| - Definition
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
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| - Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.
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| - Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.
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| - Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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| - Definition
Amount of the cost of borrowed funds accounted for as interest expense.
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| - Definition
Amount of judgment or settlement awarded to (against) the entity in respect of litigation.
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| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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| - Definition
Amount of Net Income (Loss) attributable to noncontrolling interest.
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| - Definition
The net result for the period of deducting operating expenses from operating revenues.
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| - Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
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| - Definition
The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.
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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.
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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.
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Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.
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| - Definition
The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.
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