| **Income Taxes - Schedule of Difference between Provision and U.S. Statutory Income Tax Rate (Details)** | 12 Months Ended                                                                                 |
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| **Income Tax Disclosure [Abstract]**                                                                     |                                                                                            |   |   |
| U.S. statutory income tax rate                                                                           | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate               | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate |
| Net tax charge related to foreign losses                                                                 | (5.30%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential             | (8.70%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (2.00%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential |
| Change in valuation allowances related to foreign losses                                                 | 4.00%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance    | 8.90%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance | 0.90%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance |
| Adjustments of prior years’ tax positions                                                         | 1.20%us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes                           | 0.90%us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes | (2.90%)us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes |
| State income taxes - net of U.S. tax benefit                                                             | 0.90%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes                       | 0.80%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 1.80%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes |
| Impact of reorganization of foreign subsidiaries                                                         | 0.00%bhi_EffectiveIncomeTaxRateReconciliationImpactofreorganizationofforeignsubsidiariesPercent | (1.00%)bhi_EffectiveIncomeTaxRateReconciliationImpactofreorganizationofforeignsubsidiariesPercent | 0.00%bhi_EffectiveIncomeTaxRateReconciliationImpactofreorganizationofforeignsubsidiariesPercent |
| Other - net                                                                                              | (1.70%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments                             | (0.20%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | 0.80%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments |
| Total effective tax rate                                                                                 | 34.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations                                        | 35.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 33.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations |

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| - Definition
Effective Income Tax Rate Reconciliation, Impact of reorganization of foreign subsidiaries, Percent
+ References
No definition available.
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| - Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
+ References
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| - Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss).
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense.
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).
+ References
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