Short-term Debt and Credit Facilities - Narrative (Details) £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2023 GBP (£)	Dec. 31, 2023 CAD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CAD ($)
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	$ 10,705,000,000			$ 10,873,000,000
Short-term debt	4,148,000,000			1,119,000,000
BHE
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	3,500,000,000			3,500,000,000
Short-term debt	$ 1,935,000,000			$ 245,000,000
Weighted average interest rate	5.59%	5.59%	5.59%	4.55%	4.55%
Letters of credit outstanding	$ 105,000,000			$ 101,000,000
BHE Renewables
Line of Credit Facility [Line Items]
Letters of credit outstanding	311,000,000			309,000,000
PAC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	2,000,000,000			1,200,000,000
Short-term debt	$ 1,604,000,000			0
Weighted average interest rate	6.16%	6.16%	6.16%
Letters of credit outstanding	$ 55,000,000			7,000,000
MEC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	1,505,000,000			1,505,000,000
Short-term debt	0			0
Letters of credit outstanding	55,000,000			34,000,000
NPC
Line of Credit Facility [Line Items]
Short-term debt	0			0
SPPC
Line of Credit Facility [Line Items]
Short-term debt	0			0
Northern Powergrid
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	346,000,000			296,000,000
Short-term debt	92,000,000			120,000,000
BHE Canada
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	850,000,000			793,000,000
Short-term debt	97,000,000			197,000,000
AltaLink
Line of Credit Facility [Line Items]
Short-term debt	$ 97,000,000			$ 89,000,000
Weighted average interest rate	5.24%	5.24%	5.24%	4.59%	4.59%
Debt to capitalization ratio	0.75	0.75	0.75
HomeServices
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	$ 1,500,000,000			$ 2,925,000,000
Short-term debt	$ 420,000,000			557,000,000
Line of credit | BHE
Line of Credit Facility [Line Items]
Debt to capitalization ratio	0.70	0.70	0.70
Line of credit | PAC
Line of Credit Facility [Line Items]
Debt to capitalization ratio	0.65	0.65	0.65
Line of credit | MEC
Line of Credit Facility [Line Items]
Debt to capitalization ratio	0.65	0.65	0.65
Line of credit | NPC
Line of Credit Facility [Line Items]
Debt to capitalization ratio	0.65	0.65	0.65
Line of credit | SPPC
Line of Credit Facility [Line Items]
Debt to capitalization ratio	0.65	0.65	0.65
Line of credit | AltaLink Investments, L.P.
Line of Credit Facility [Line Items]
Short-term debt	$ 0			$ 108,000,000
Weighted average interest rate	0.00%	0.00%	0.00%	5.71%	5.71%
Debt to capitalization ratio	0.8	0.8	0.8
EBITDA to interest expense ratio	2.25	2.25	2.25
Letter of credit | PAC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	$ 168,000,000
Unsecured credit facility, $3.5 billion, expiring June 2026 | BHE
Line of Credit Facility [Line Items]
Letters of credit outstanding	0			$ 0
Unsecured credit facility, $3.5 billion, expiring June 2026 | Line of credit | BHE
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	3,500,000,000
Unsecured credit facility, $3.5 billion, expiring June 2026 | Letter of credit | BHE
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	300,000,000			450,000,000
Unsecured credit facility, expiring June 2026 | PAC
Line of Credit Facility [Line Items]
Letters of credit outstanding	31,000,000
Unsecured credit facility, expiring June 2026 | Line of credit | PAC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	2,000,000,000
Unsecured credit facility, expiring June 2026 | Letter of credit | PAC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	255,000,000
Unsecured credit facility, expiring June 2025 | PAC
Line of Credit Facility [Line Items]
Letters of credit outstanding				31,000,000
Unsecured credit facility, expiring June 2025 | Line of credit | PAC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity				1,200,000,000
Unsecured credit facility, expiring June 2025 | Letter of credit | PAC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity				219,000,000
Unsecured credit facility, $1.5 billion, expiring June 2026 | MEC
Line of Credit Facility [Line Items]
Letters of credit outstanding	0			0
Unsecured credit facility, $1.5 billion, expiring June 2026 | Line of credit | MEC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	1,500,000,000
Unsecured credit facility, $1.5 billion, expiring June 2026 | Letter of credit | MEC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	345,000,000			371,000,000
Secured credit facility, $600 million, expiring June 2026 | NPC
Line of Credit Facility [Line Items]
Letters of credit outstanding	0
Secured credit facility, $600 million, expiring June 2026 | Line of credit | NPC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	600,000,000
Secured credit facility, $600 million, expiring June 2026 | Letter of credit | NPC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	50,000,000
Secured credit facility, $400 million, expiring June 2026 | SPPC
Line of Credit Facility [Line Items]
Letters of credit outstanding	0
Secured credit facility, $400 million, expiring June 2026 | Line of credit | SPPC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	400,000,000
Secured credit facility, $400 million, expiring June 2026 | Letter of credit | SPPC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	$ 50,000,000
Secured credit facility, $400 million, expiring June 2025 | NPC
Line of Credit Facility [Line Items]
Letters of credit outstanding				0
Secured credit facility, $400 million, expiring June 2025 | Line of credit | NPC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity				400,000,000
Secured credit facility, $400 million, expiring June 2025 | Letter of credit | NPC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity				100,000,000
Secured credit facility, $250 million, expiring June 2025 | SPPC
Line of Credit Facility [Line Items]
Letters of credit outstanding				0
Secured credit facility, $250 million, expiring June 2025 | Line of credit | SPPC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity				250,000,000
Secured credit facility, $250 million, expiring June 2025 | Letter of credit | SPPC
Line of Credit Facility [Line Items]
Line of credit, maximum capacity				$ 75,000,000
Multicurrency revolving credit facility, expiring December 2026 | Line of credit | Northern Powergrid
Line of Credit Facility [Line Items]
Debt to regulated asset value	0.8	0.8	0.8
Interest coverage ratio	2.5	2.5	2.5
Multicurrency revolving credit facility, expiring December 2026 | Line of credit | Northern Powergrid (Northeast)
Line of Credit Facility [Line Items]
Debt to regulated asset value	0.65	0.65	0.65
Multicurrency revolving credit facility, expiring December 2026 | Revolving credit facility | Northern Powergrid
Line of Credit Facility [Line Items]
Line of credit, maximum capacity | £		£ 200
Weighted average interest rate	0.00%	0.00%	0.00%	3.56%	3.56%
Line of credit outstanding	$ 0			$ 65,000,000
Unsecured revolving credit facility, C$50 million, expiring December 2027 | BHE Canada
Line of Credit Facility [Line Items]
Letters of credit outstanding	$ 0
Unsecured revolving credit facility, C$50 million, expiring December 2027 | Letter of credit | BHE Canada
Line of Credit Facility [Line Items]
Line of credit, maximum capacity			$ 50
Unsecured revolving credit facility, C$50 million, expiring December 2027 | Revolving credit facility | BHE Canada
Line of Credit Facility [Line Items]
Line of credit, maximum capacity			$ 50
Debt to capitalization ratio	0.75	0.75	0.75
Line of credit outstanding	$ 0
Extension period	1 year
EBITDA to interest expense ratio	2.25	2.25	2.25
Secured credit facility, C$500 million, expiring December 2028 | Line of credit | AltaLink
Line of Credit Facility [Line Items]
Line of credit, maximum capacity			$ 500
Extension period	1 year
Secured credit facility, C$75 million, expiring December 2028 | AltaLink
Line of Credit Facility [Line Items]
Letters of credit outstanding			1		$ 0
Secured credit facility, C$75 million, expiring December 2028 | Line of credit | AltaLink
Line of Credit Facility [Line Items]
Line of credit, maximum capacity			$ 75
Debt to capitalization ratio	0.75	0.75	0.75
Line of credit outstanding	$ 0			0
Extension period	1 year
Secured credit facility, C$75 million, expiring December 2028 | Letter of credit | AltaLink
Line of Credit Facility [Line Items]
Line of credit, maximum capacity			$ 75		75
Unsecured credit facility, C$300 million, expiring December 2026 | AltaLink Investments, L.P.
Line of Credit Facility [Line Items]
Letters of credit outstanding	$ 0			0
Unsecured credit facility, C$300 million, expiring December 2026 | Line of credit | AltaLink Investments, L.P.
Line of Credit Facility [Line Items]
Line of credit, maximum capacity			300
Extension period	1 year
Unsecured credit facility, C$300 million, expiring December 2026 | Letter of credit | AltaLink Investments, L.P.
Line of Credit Facility [Line Items]
Line of credit, maximum capacity			10		10
Revolving credit facility, C$200 million | AltaLink Investments, L.P.
Line of Credit Facility [Line Items]
Letters of credit outstanding	$ 0			0
Revolving credit facility, C$200 million | Line of credit | AltaLink Investments, L.P.
Line of Credit Facility [Line Items]
Line of credit, maximum capacity			200
Revolving credit facility, C$200 million | Letter of credit | AltaLink Investments, L.P.
Line of Credit Facility [Line Items]
Line of credit, maximum capacity			$ 10		$ 10
Unsecured credit facility, $700 million, expiring September 2026 | Line of credit | HomeServices
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	700,000,000
Short-term debt	$ 0			$ 115,000,000
Weighted average interest rate	0.00%	0.00%	0.00%	5.17%	5.17%
Mortgage lines of credit, expire beginning March through July 2024 | Line of credit | HomeServices
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	$ 1,500,000,000			$ 2,200,000,000
Short-term debt	$ 420,000,000			$ 442,000,000
Weighted average interest rate	6.92%	6.92%	6.92%	6.09%	6.09%