Subsidiary Debt - BHE Transmission (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
Subsidiary debt | BHE Transmission
Debt Instrument [Line Items]
Par value	3,924
Subsidiary debt	3,906	3,877
Subsidiary debt | AltaLink Investments, L.P.
Debt Instrument [Line Items]
Par value	158
Subsidiary debt	158	157
Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Par value	3,760
Subsidiary debt	$ 3,742	3,713
Series 15-1 Senior Bonds, 2.244%, due 2022 | Subsidiary debt | AltaLink Investments, L.P.
Debt Instrument [Line Items]
Stated rate	2.244%
Par value	$ 158
Subsidiary debt	$ 158	157
Series 2012-2 Notes, 2.978%, due 2022 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	2.978%
Par value	$ 218
Subsidiary debt	$ 218	216
Series 2013-4 Notes, 3.668%, due 2023 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	3.668%
Par value	$ 396
Subsidiary debt	$ 395	392
Series 2014-1 Notes, 3.399%, due 2024 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	3.399%
Par value	$ 277
Subsidiary debt	$ 277	275
Series 2016-1 Notes, 2.747%, due 2026 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	2.747%
Par value	$ 277
Subsidiary debt	$ 276	274
Series 2020-1 Notes, 1.509%, due 2030 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	1.509%
Par value	$ 178
Subsidiary debt	$ 177	175
Series 2006-1 Notes, 5.249%, due 2036 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	5.249%
Par value	$ 119
Subsidiary debt	$ 118	118
Series 2010-1 Notes, 5.381%, due 2040 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	5.381%
Par value	$ 99
Subsidiary debt	$ 99	98
Series 2010-2 Notes, 4.872%, due 2040 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	4.872%
Par value	$ 119
Subsidiary debt	$ 118	117
Series 2011-1 Notes, 4.462%, due 2041 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	4.462%
Par value	$ 218
Subsidiary debt	$ 217	215
Series 2012-1 Notes, 3.990%, due 2042 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	3.99%
Par value	$ 415
Subsidiary debt	$ 410	407
Series 2013-3 Notes, 4.922%, due 2043 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	4.922%
Par value	$ 277
Subsidiary debt	$ 276	274
Series 2014-3 Notes, 4.054%, due 2044 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	4.054%
Par value	$ 233
Subsidiary debt	$ 232	230
Series 2015-1 Notes, 4.090%, due 2045 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	4.09%
Par value	$ 277
Subsidiary debt	$ 275	273
Series 2016-2 Notes, 3.717%, due 2046 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	3.717%
Par value	$ 356
Subsidiary debt	$ 354	351
Series 2013-1 Notes, 4.446%, due 2053 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	4.446%
Par value	$ 198
Subsidiary debt	$ 197	196
Series 2014-2 Notes, 4.274%, due 2064 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	4.274%
Par value	$ 103
Subsidiary debt	$ 103	102
Construction Loan, 5.620%, due 2024 | Subsidiary debt | AltaLink
Debt Instrument [Line Items]
Stated rate	5.62%
Par value	$ 6
Subsidiary debt	$ 6	$ 7