Jointly Owned Utility Facilities (Details) $ in Millions	Dec. 31, 2024 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	$ 10,708
Accumulated depreciation	6,415
Construction work in progress	465
Walter Scott, Jr. No. 4
Jointly Owned Utility Plant Interests [Line Items]
Revenue sharing credits netted against facility in service	953
Revenue sharing credits netted against accumulated depreciation	218
PAC
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	4,761
Accumulated depreciation	2,781
Construction work in progress	$ 324
PAC | Jim Bridger Nos. 1-4
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	67.00%
Facility in service	$ 1,564
Accumulated depreciation	991
Construction work in progress	$ 4
PAC | Hunter No. 1
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	94.00%
Facility in service	$ 509
Accumulated depreciation	256
Construction work in progress	$ 3
PAC | Hunter No. 2
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	60.00%
Facility in service	$ 315
Accumulated depreciation	161
Construction work in progress	$ 1
PAC | Wyodak
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	80.00%
Facility in service	$ 492
Accumulated depreciation	301
Construction work in progress	$ 0
PAC | Colstrip Nos. 3 and 4
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	10.00%
Facility in service	$ 263
Accumulated depreciation	217
Construction work in progress	$ 2
PAC | Hermiston
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 191
Accumulated depreciation	115
Construction work in progress	$ 6
PAC | Craig Nos. 1 and 2
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	19.00%
Facility in service	$ 373
Accumulated depreciation	352
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	58
Construction work in progress	$ 0
PAC | Hayden No. 2
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	13.00%
Facility in service	$ 45
Accumulated depreciation	34
Construction work in progress	0
PAC | Transmission and distribution facilities
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	932
Accumulated depreciation	296
Construction work in progress	308
MidAmerican Energy
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	4,558
Accumulated depreciation	2,839
Construction work in progress	80
MidAmerican Energy | Transmission and distribution facilities
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	276
Accumulated depreciation	103
Construction work in progress	$ 4
MidAmerican Energy | Louisa No. 1
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	88.00%
Facility in service	$ 988
Accumulated depreciation	559
Construction work in progress	$ 7
MidAmerican Energy | Quad Cities Nos. 1 and 2
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	25.00%
Facility in service	$ 747
Accumulated depreciation	501
Construction work in progress	$ 13
MidAmerican Energy | Walter Scott, Jr. No. 3
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	79.00%
Facility in service	$ 1,033
Accumulated depreciation	679
Construction work in progress	$ 10
MidAmerican Energy | Walter Scott, Jr. No. 4
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	60.00%
Facility in service	$ 177
Accumulated depreciation	124
Construction work in progress	$ 12
MidAmerican Energy | George Neal No. 4
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	41.00%
Facility in service	$ 337
Accumulated depreciation	199
Construction work in progress	$ 5
MidAmerican Energy | Ottumwa No. 1
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	52.00%
Facility in service	$ 402
Accumulated depreciation	306
Construction work in progress	$ 16
MidAmerican Energy | George Neal No. 3
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	72.00%
Facility in service	$ 598
Accumulated depreciation	368
Construction work in progress	13
NV Energy
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	636
Accumulated depreciation	444
Construction work in progress	47
NV Energy | Transmission and distribution facilities
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	63
Accumulated depreciation	31
Construction work in progress	$ 33
NV Energy | Valmy Nos. 1 and 2
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 412
Accumulated depreciation	372
Construction work in progress	$ 13
NV Energy | ON Line Transmission Line
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	25.00%
Facility in service	$ 161
Accumulated depreciation	41
Construction work in progress	1
BHE Pipeline Group
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	753
Accumulated depreciation	351
Construction work in progress	$ 14
BHE Pipeline Group | Ellisburg Pool
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	39.00%
Facility in service	$ 33
Accumulated depreciation	13
Construction work in progress	$ 1
BHE Pipeline Group | Ellisburg Station
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 29
Accumulated depreciation	9
Construction work in progress	$ 5
BHE Pipeline Group | Harrison
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 55
Accumulated depreciation	20
Construction work in progress	$ 3
BHE Pipeline Group | Leidy
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 148
Accumulated depreciation	51
Construction work in progress	$ 4
BHE Pipeline Group | Oakford
Jointly Owned Utility Plant Interests [Line Items]
Ownership share	50.00%
Facility in service	$ 213
Accumulated depreciation	75
Construction work in progress	1
BHE Pipeline Group | Common facilities
Jointly Owned Utility Plant Interests [Line Items]
Facility in service	275
Accumulated depreciation	183
Construction work in progress	$ 0