Jointly Owned Utility Facilities (Details) $ in Millions	Dec. 31, 2021 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	$ 10,504
Accumulated depreciation	5,498
Construction work in progress	246
Walter Scott, Jr. No. 4
Jointly Owned Utility Plant Interests [Line Items]
Revenue sharing credits netted against facility in service	561
Revenue sharing credits netted against accumulated depreciation	127
PAC
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	4,609
Accumulated depreciation	2,363
Construction work in progress	$ 153
PAC | Jim Bridger Nos. 1-4
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	67.00%
Facility in service	$ 1,523
Accumulated depreciation	812
Construction work in progress	$ 15
PAC | Hunter No. 1
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	94.00%
Facility in service	$ 489
Accumulated depreciation	221
Construction work in progress	$ 8
PAC | Hunter No. 2
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	60.00%
Facility in service	$ 306
Accumulated depreciation	138
Construction work in progress	$ 1
PAC | Wyodak
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	80.00%
Facility in service	$ 477
Accumulated depreciation	269
Construction work in progress	$ 8
PAC | Colstrip Nos. 3 and 4
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	10.00%
Facility in service	$ 260
Accumulated depreciation	161
Construction work in progress	$ 3
PAC | Hermiston
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 185
Accumulated depreciation	99
Construction work in progress	$ 0
PAC | Craig Nos. 1 and 2
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	19.00%
Facility in service	$ 369
Accumulated depreciation	319
Construction work in progress	$ 0
PAC | Hayden No. 1
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	25.00%
Facility in service	$ 77
Accumulated depreciation	47
Construction work in progress	$ 0
PAC | Hayden No. 2
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	13.00%
Facility in service	$ 44
Accumulated depreciation	28
Construction work in progress	0
PAC | Transmission and distribution facilities
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	879
Accumulated depreciation	269
Construction work in progress	118
MidAmerican Energy
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	4,553
Accumulated depreciation	2,439
Construction work in progress	80
MidAmerican Energy | Transmission and distribution facilities
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	263
Accumulated depreciation	100
Construction work in progress	$ 4
MidAmerican Energy | Louisa No. 1
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	88.00%
Facility in service	$ 864
Accumulated depreciation	501
Construction work in progress	$ 20
MidAmerican Energy | Quad Cities Station
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	25.00%
Facility in service	$ 732
Accumulated depreciation	452
Construction work in progress	$ 9
MidAmerican Energy | Walter Scott, Jr. No. 3
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	79.00%
Facility in service	$ 949
Accumulated depreciation	518
Construction work in progress	$ 15
MidAmerican Energy | Walter Scott, Jr. No. 4
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	60.00%
Facility in service	$ 225
Accumulated depreciation	134
Construction work in progress	$ 8
MidAmerican Energy | George Neal No. 4
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	41.00%
Facility in service	$ 318
Accumulated depreciation	184
Construction work in progress	$ 4
MidAmerican Energy | Ottumwa No. 1
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	52.00%
Facility in service	$ 674
Accumulated depreciation	264
Construction work in progress	$ 11
MidAmerican Energy | George Neal No. 3
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	72.00%
Facility in service	$ 528
Accumulated depreciation	286
Construction work in progress	9
NV Energy
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	624
Accumulated depreciation	379
Construction work in progress	2
NV Energy | Transmission and distribution facilities
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	65
Accumulated depreciation	34
Construction work in progress	$ 0
NV Energy | Navajo
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	11.00%
Facility in service	$ 5
Accumulated depreciation	5
Construction work in progress	$ 0
NV Energy | Valmy
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 394
Accumulated depreciation	309
Construction work in progress	$ 1
NV Energy | On Line Transmission Line
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	25.00%
Facility in service	$ 160
Accumulated depreciation	31
Construction work in progress	1
BHE Pipeline Group
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	718
Accumulated depreciation	317
Construction work in progress	$ 11
BHE Pipeline Group | Ellisburg Pool
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	39.00%
Facility in service	$ 31
Accumulated depreciation	11
Construction work in progress	$ 1
BHE Pipeline Group | Ellisburg Station
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 26
Accumulated depreciation	8
Construction work in progress	$ 1
BHE Pipeline Group | Harrison
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 53
Accumulated depreciation	18
Construction work in progress	$ 0
BHE Pipeline Group | Leidy
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 132
Accumulated depreciation	46
Construction work in progress	$ 7
BHE Pipeline Group | Oakford
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 200
Accumulated depreciation	68
Construction work in progress	2
BHE Pipeline Group | Common Facilities
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	276
Accumulated depreciation	166
Construction work in progress	$ 0