Debt Instrument, Face Amount, Fair Value Adjustments

No definition available.

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Namespace Prefix:	bhe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Face Amount, Net of Purchase Accounting Adjustment

+ References

No definition available.

+ Details

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Namespace Prefix:	bhe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Outstanding Principal Amount Including Swap Amount

+ References

No definition available.

+ Details

Name:	bhe_DebtInstrumentOutstandingPrincipalAmountIncludingSwapAmount
Namespace Prefix:	bhe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Other Long-term Debt, Fair Value Adjustments

+ References

No definition available.

+ Details

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- Definition

Other Long-term Debt, Net of Purchase Accounting Adjustment

+ References

No definition available.

+ Details

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Namespace Prefix:	bhe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
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+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	dtr-types:percentItemType
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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

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Balance Type:	na
Period Type:	duration

- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

+ Details

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- Definition

Amount of long-term debt classified as other.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of an entity's outstanding debt that is designated as a hedged item in cash flow, fair value, or net investment hedge.

+ References

No definition available.

+ Details

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Subsidiary Debt - BHE Pipeline Group (Details) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 EUR (€)	Jun. 30, 2021 USD ($)
Debt Instrument [Line Items]
Par value		$ 49,746
Subsidiary debt
Debt Instrument [Line Items]
Par value		36,545
Subsidiary debt	$ 36,319	36,659
BHE Pipeline Group \| Subsidiary debt
Debt Instrument [Line Items]
Par value		5,534
Subsidiary debt	6,165	5,924
Eastern Energy Gas \| Subsidiary debt
Debt Instrument [Line Items]
Par value		3,934
Fair value adjustment, par value		0
Total Eastern Energy Gas, net of fair value adjustment, par value		3,934
Subsidiary debt	4,425	3,906
Fair value adjustments	493	430
Total Eastern Energy Gas, net of fair value adjustments	4,918	4,336
Eastern Energy Gas \| Subsidiary debt \| Variable-rate Senior Notes, due 2021
Debt Instrument [Line Items]
Par value		0
Subsidiary debt	$ 500	$ 0
Interest rate on derivatives	100.00%
Fixed interest rate	3.46%
Basis spread on variable rate	0.60%
Eastern Energy Gas \| Subsidiary debt \| 2.875% Senior Notes, due 2023
Debt Instrument [Line Items]
Stated rate		2.875%	2.875%
Par value		$ 250
Subsidiary debt	$ 249	$ 250
Eastern Energy Gas \| Subsidiary debt \| 3.55% Senior Notes, due 2023
Debt Instrument [Line Items]
Stated rate		3.55%	3.55%
Par value		$ 400
Subsidiary debt	399	$ 399
Eastern Energy Gas \| Subsidiary debt \| 2.50% Senior Notes, due 2024
Debt Instrument [Line Items]
Stated rate		2.50%	2.50%
Par value		$ 600
Subsidiary debt	596	$ 597
Eastern Energy Gas \| Subsidiary debt \| 3.60% Senior Notes, due 2024
Debt Instrument [Line Items]
Stated rate		3.60%	3.60%
Par value		$ 339
Subsidiary debt	448	$ 338
Eastern Energy Gas \| Subsidiary debt \| 3.32% Senior Notes, due 2026 (€250)
Debt Instrument [Line Items]
Stated rate		3.32%	3.32%
Par value		$ 284	€ 250
Subsidiary debt	$ 304	$ 283
Interest rate on derivatives		100.00%	100.00%
Fixed interest rate	3.32%	3.32%	3.32%
Outstanding principal amount including swap	$ 280	$ 280
Eastern Energy Gas \| Subsidiary debt \| 3.00% Senior Notes, due 2029
Debt Instrument [Line Items]
Stated rate		3.00%	3.00%
Par value		$ 174
Subsidiary debt	594	$ 173
Eastern Energy Gas \| Subsidiary debt \| 3.80% Senior Notes, due 2031
Debt Instrument [Line Items]
Stated rate		3.80%	3.80%
Par value		$ 150
Subsidiary debt	150	$ 150
Eastern Energy Gas \| Subsidiary debt \| 4.80% Senior Notes, due 2043
Debt Instrument [Line Items]
Stated rate		4.80%	4.80%
Par value		$ 54
Subsidiary debt	395	$ 53
Eastern Energy Gas \| Subsidiary debt \| 4.60% Senior Notes, due 2044
Debt Instrument [Line Items]
Stated rate		4.60%	4.60%
Par value		$ 56
Subsidiary debt	493	$ 56
Eastern Energy Gas \| Subsidiary debt \| 3.90% Senior Notes, due 2049
Debt Instrument [Line Items]
Stated rate		3.90%	3.90%
Par value		$ 27
Subsidiary debt	297	$ 26
Eastern Energy Gas \| Subsidiary debt \| EEGH 3.32% Senior Notes, due 2026, denominated in euros
Debt Instrument [Line Items]
Par value \| €			€ 250
Fixed interest rate		1.45%	1.45%
EGTS \| Subsidiary debt \| 3.60% Senior Notes, due 2024
Debt Instrument [Line Items]
Stated rate		3.60%	3.60%
Par value				$ 111
Subsidiary debt	0	$ 110
EGTS \| Subsidiary debt \| 3.00% Senior Notes, due 2029
Debt Instrument [Line Items]
Stated rate		3.00%	3.00%
Par value				426
Subsidiary debt	0	$ 422
EGTS \| Subsidiary debt \| 4.80% Senior Notes, due 2043
Debt Instrument [Line Items]
Stated rate		4.80%	4.80%
Par value				346
Subsidiary debt	0	$ 341
EGTS \| Subsidiary debt \| 4.60% Senior Notes, due 2044
Debt Instrument [Line Items]
Stated rate		4.60%	4.60%
Par value				444
Subsidiary debt	0	$ 437
EGTS \| Subsidiary debt \| 3.90% Senior Notes, due 2049
Debt Instrument [Line Items]
Stated rate		3.90%	3.90%
Par value				$ 273
Subsidiary debt	0	$ 271
Northern Natural Gas \| Subsidiary debt
Debt Instrument [Line Items]
Par value		1,600
Subsidiary debt	1,247	$ 1,588
Northern Natural Gas \| Subsidiary debt \| 4.25% Senior Notes, due 2021
Debt Instrument [Line Items]
Stated rate		4.25%	4.25%
Par value		$ 0
Subsidiary debt	200	$ 0
Northern Natural Gas \| Subsidiary debt \| 5.80% Senior Bonds, due 2037
Debt Instrument [Line Items]
Stated rate		5.80%	5.80%
Par value		$ 150
Subsidiary debt	149	$ 149
Northern Natural Gas \| Subsidiary debt \| 4.10% Senior Bonds, due 2042
Debt Instrument [Line Items]
Stated rate		4.10%	4.10%
Par value		$ 250
Subsidiary debt	248	$ 248
Northern Natural Gas \| Subsidiary debt \| 4.30% Senior Bonds, due 2049
Debt Instrument [Line Items]
Stated rate		4.30%	4.30%
Par value		$ 650
Subsidiary debt	650	$ 651
Northern Natural Gas \| Subsidiary debt \| 3.40% Senior Bonds, due 2051
Debt Instrument [Line Items]
Stated rate		3.40%	3.40%
Par value		$ 550
Subsidiary debt	$ 0	$ 540