Asset Impairment Charges, Net Of Tax

No definition available.

Name:	bhe_AssetImpairmentChargesNetOfTax
Namespace Prefix:	bhe_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Asset Retirement Obligation, Revision of Estimate, Benefit

+ References

No definition available.

+ Details

Name:	bhe_AssetRetirementObligationRevisionOfEstimateBenefit
Namespace Prefix:	bhe_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Asset Retirement Obligation, Revision of Estimate, Benefit, Net of Tax

+ References

No definition available.

+ Details

Name:	bhe_AssetRetirementObligationRevisionOfEstimateBenefitNetOfTax
Namespace Prefix:	bhe_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Gain (Loss) Related to Litigation Settlement, Net of Tax

+ References

No definition available.

+ Details

Name:	bhe_GainLossRelatedToLitigationSettlementNetOfTax
Namespace Prefix:	bhe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Litigation Settlement, Expense, Net of Tax

+ References

No definition available.

+ Details

Name:	bhe_LitigationSettlementExpenseNetOfTax
Namespace Prefix:	bhe_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Public Utilities, Requested Rate Increase (Decrease), Project Capacity

+ References

No definition available.

+ Details

Name:	bhe_PublicUtilitiesRequestedRateIncreaseDecreaseProjectCapacity
Namespace Prefix:	bhe_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

+ Details

Name:	us-gaap_GainLossRelatedToLitigationSettlement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of public utility's approved rate increase (decrease) by regulatory agency.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesApprovedRateIncreaseDecreaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Period end amount of total net PPE.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesRequestedRateIncreaseDecreasePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 405
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394

+ Details

Name:	us-gaap_RegulatoryLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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_RegulatoryLiabilitiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RegulatoryLiabilityAxis=us-gaap_AssetRetirementObligationCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=bhe_EasternGasTransmissionAndStorageIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=bhe_FERCCaseDisallowanceOfCapitalizedAFUDCResolvedInDecember2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilityAxis=bhe_CancellationOfAtlanticCoastPipelineProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilityAxis=bhe_AtlanticCoastPipelineProjectAvailableForPotentialModifiedProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilityAxis=bhe_CancellationOfSwedenValleyProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RegulatoryAgencyAxis=bhe_FederalEnergyRegulatoryCommissionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=bhe_GeneralRateCaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_NaturalGasStorageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_NaturalGasGatheringTransportationMarketingAndProcessingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=bhe_CovePointLNGLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=bhe_GeneralRateCaseIncreaseInRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=bhe_GeneralRateCaseDecreaseInDepreciationExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilitiesRegulatoryProceedingAxis=bhe_GeneralRateCaseProvisionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Regulatory Matters - EEGH - Other Regulatory Matters (Details) dekathermPerDay in Millions, $ in Millions		1 Months Ended				3 Months Ended
	Aug. 01, 2020 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jan. 31, 2020 USD ($)	Dec. 31, 2014 dekathermPerDay	Jun. 30, 2021 USD ($)	Oct. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2021 USD ($)
Regulatory Liabilities [Line Items]
Regulatory liabilities			$ 7,475							$ 7,214
Asset retirement obligations
Regulatory Liabilities [Line Items]
Regulatory liabilities			305							345
EGTS \| FERC Case, Disallowance Of Capitalized AFUDC, Resolved In December 2020
Regulatory Liabilities [Line Items]
Litigation settlement, expense			43
Litigation settlement, expense, after-tax			$ 31
Litigation settlement, reduction in expense						$ 11
Litigation settlement, reduction in expense, after tax						$ 8
EGTS \| Cancellation Of Atlantic Coast Pipeline Project
Regulatory Liabilities [Line Items]
Impairment of assets									$ 482
Impairment of assets, after-tax									359
EGTS \| Atlantic Coast Pipeline Project, Available For Potential Modified Project
Regulatory Liabilities [Line Items]
Impairment of assets								$ 10
Impairment of assets, after-tax								7
Benefit from ARO revision								29
Benefit from ARO revision, after-tax								$ 20
Property, plant and equipment, net										$ 40
EGTS \| Cancellation Of Sweden Valley Project
Regulatory Liabilities [Line Items]
Impairment of assets									13
Impairment of assets, after-tax									10
EGTS \| FERC
Regulatory Liabilities [Line Items]
Firm transportation service (Dth per day) \| dekathermPerDay					1.5
EGTS \| FERC \| General Rate Case
Regulatory Liabilities [Line Items]
Requested rate increase (decrease)		$ 1,100
EGTS \| FERC \| General Rate Case \| Natural Gas, Storage
Regulatory Liabilities [Line Items]
Requested rate increase (decrease), percentage		85.00%
EGTS \| FERC \| General Rate Case \| Natural Gas, Gathering, Transportation, Marketing and Processing
Regulatory Liabilities [Line Items]
Requested rate increase (decrease), percentage		60.00%
EGTS \| Asset retirement obligations \| Atlantic Coast Pipeline Project, Available For Potential Modified Project
Regulatory Liabilities [Line Items]
Regulatory liabilities									$ 75
Cove Point LNG, LP \| FERC \| General Rate Case
Regulatory Liabilities [Line Items]
Requested rate increase (decrease)				$ 182
Cove Point LNG, LP \| FERC \| General Rate Case, Increase In Revenue
Regulatory Liabilities [Line Items]
Approved rate increase (decrease)	$ 4
Cove Point LNG, LP \| FERC \| General Rate Case, Decrease In Depreciation Expense
Regulatory Liabilities [Line Items]
Approved rate increase (decrease)	$ (1)
Cove Point LNG, LP \| FERC \| General Rate Case, Provision
Regulatory Liabilities [Line Items]
Approved rate increase (decrease)							$ 7