Subsidiary Debt - BHE Renewables (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Par value	$ 49,746
Subsidiary debt
Debt Instrument [Line Items]
Par value	36,545
Subsidiary debt	36,659	$ 36,319
BHE Renewables \| Subsidiary debt
Debt Instrument [Line Items]
Par value	3,073
Subsidiary debt	$ 3,043	$ 3,116
Interest rate on derivatives	100.00%
BHE Renewables \| Subsidiary debt \| Minimum
Debt Instrument [Line Items]
Fixed interest rate	3.21%	3.21%
BHE Renewables \| Subsidiary debt \| Maximum
Debt Instrument [Line Items]
Fixed interest rate	3.88%	3.88%
BHE Renewables \| Subsidiary debt \| Bishop Hill Holdings Senior Notes, 5.125%, due 2032
Debt Instrument [Line Items]
Stated rate	5.125%
Par value	$ 62
Subsidiary debt	$ 62	$ 69
BHE Renewables \| Subsidiary debt \| Solar Star Funding Senior Notes, 3.950%, due 2035
Debt Instrument [Line Items]
Stated rate	3.95%
Par value	$ 258
Subsidiary debt	$ 256	269
BHE Renewables \| Subsidiary debt \| Solar Star Funding Senior Notes, 5.375%, due 2035
Debt Instrument [Line Items]
Stated rate	5.375%
Par value	$ 826
Subsidiary debt	$ 819	853
BHE Renewables \| Subsidiary debt \| Grande Prairie Wind Senior Notes, 3.860%, due 2037
Debt Instrument [Line Items]
Stated rate	3.86%
Par value	$ 299
Subsidiary debt	$ 297	327
BHE Renewables \| Subsidiary debt \| Topaz Solar Farms Senior Notes, 5.750%, due 2039
Debt Instrument [Line Items]
Stated rate	5.75%
Par value	$ 606
Subsidiary debt	$ 600	631
BHE Renewables \| Subsidiary debt \| Topaz Solar Farms Senior Notes, 4.875%, due 2039
Debt Instrument [Line Items]
Stated rate	4.875%
Par value	$ 172
Subsidiary debt	$ 170	180
BHE Renewables \| Subsidiary debt \| Alamo 6 Senior Notes, 4.170%, due 2042
Debt Instrument [Line Items]
Stated rate	4.17%
Par value	$ 199
Subsidiary debt	197	205
BHE Renewables \| Subsidiary debt \| Other
Debt Instrument [Line Items]
Par value	5
Subsidiary debt	5	8
BHE Renewables \| Subsidiary debt \| TX Jumbo Road Term Loan, due 2025
Debt Instrument [Line Items]
Par value	119
Subsidiary debt	117	138
BHE Renewables \| Subsidiary debt \| Marshall Wind Term Loan, due 2026
Debt Instrument [Line Items]
Par value	64
Subsidiary debt	63	69
BHE Renewables \| Subsidiary debt \| Flat Top Wind I Term Loan, due 2028(2)
Debt Instrument [Line Items]
Par value	113
Subsidiary debt	$ 113	0
Variable rate	6.34%
BHE Renewables \| Subsidiary debt \| Pinyon Pines I and II Term Loans, due 2034
Debt Instrument [Line Items]
Par value	$ 350
Subsidiary debt	$ 344	$ 367

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

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