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Revenue from Contracts with Customers - BHE (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Disaggregation of Revenue [Line Items]        
Total Customer Revenue $ 4,199 $ 3,317 $ 8,911 $ 6,833
Operating revenue 6,064 4,612 12,145 9,139
Energy        
Disaggregation of Revenue [Line Items]        
Operating revenue 4,301 3,419 9,150 7,053
Other revenue        
Disaggregation of Revenue [Line Items]        
Operating revenue 102 102 239 220
PAC        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 1,286 1,127 2,515 2,297
Operating revenue 1,298 1,144 2,540 2,350
PAC | Energy        
Disaggregation of Revenue [Line Items]        
Operating revenue 1,298 1,144 2,540 2,350
PAC | Other revenue        
Disaggregation of Revenue [Line Items]        
Operating revenue 12 17 25 53
MidAmerican Funding        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 690 610 1,752 1,292
Operating revenue 693 616 1,760 1,302
MidAmerican Funding | Energy        
Disaggregation of Revenue [Line Items]        
Operating revenue 693 616 1,760 1,302
MidAmerican Funding | Other revenue        
Disaggregation of Revenue [Line Items]        
Operating revenue 3 6 8 10
NV Energy        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 762 687 1,347 1,302
Operating revenue 767 695 1,358 1,317
NV Energy | Energy        
Disaggregation of Revenue [Line Items]        
Operating revenue 767 695 1,358 1,317
NV Energy | Other revenue        
Disaggregation of Revenue [Line Items]        
Operating revenue 5 8 11 15
Northern Powergrid        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 251 196 524 436
Operating revenue 280 221 580 487
Northern Powergrid | Energy        
Disaggregation of Revenue [Line Items]        
Operating revenue 280 221 580 487
Northern Powergrid | Other revenue        
Disaggregation of Revenue [Line Items]        
Operating revenue 29 25 56 51
BHE Pipeline Group        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 689 221 1,760 621
Operating revenue 706 225 1,799 626
BHE Pipeline Group | Energy        
Disaggregation of Revenue [Line Items]        
Operating revenue 706 225 1,799 626
BHE Pipeline Group | Other revenue        
Disaggregation of Revenue [Line Items]        
Operating revenue 17 4 39 5
BHE Transmission        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 185 169 365 341
Operating revenue 182 169 362 341
BHE Transmission | Energy        
Disaggregation of Revenue [Line Items]        
Operating revenue 182 169 362 341
BHE Transmission | Other revenue        
Disaggregation of Revenue [Line Items]        
Operating revenue (3) 0 (3) 0
BHE Renewables        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 239 212 405 371
BHE Renewables | Energy        
Disaggregation of Revenue [Line Items]        
Operating revenue 267 244 457 422
BHE Renewables | Other revenue        
Disaggregation of Revenue [Line Items]        
Operating revenue 28 32 52 51
BHE and Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 97 95 243 173
Operating revenue 108 105 294 208
BHE and Other | Energy        
Disaggregation of Revenue [Line Items]        
Operating revenue 108 105 294 208
BHE and Other | Other revenue        
Disaggregation of Revenue [Line Items]        
Operating revenue 11 10 51 35
Regulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 3,587 2,969 7,681 6,182
Regulated | Retail electric        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 2,411 2,172 4,519 4,233
Regulated | Retail gas        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 109 104 607 338
Regulated | Wholesale        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 108 59 301 136
Regulated | Transmission and distribution        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 495 419 991 881
Regulated | Interstate pipeline        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 433 195 1,207 547
Regulated | Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 31 20 56 47
Regulated | PAC        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 1,286 1,127 2,515 2,297
Regulated | PAC | Retail electric        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 1,188 1,066 2,333 2,188
Regulated | PAC | Retail gas        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | PAC | Wholesale        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 30 17 66 17
Regulated | PAC | Transmission and distribution        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 37 24 62 46
Regulated | PAC | Interstate pipeline        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | PAC | Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 31 20 54 46
Regulated | MidAmerican Funding        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 689 607 1,741 1,283
Regulated | MidAmerican Funding | Retail electric        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 516 468 968 878
Regulated | MidAmerican Funding | Retail gas        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 89 84 549 271
Regulated | MidAmerican Funding | Wholesale        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 69 37 194 101
Regulated | MidAmerican Funding | Transmission and distribution        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 15 18 30 33
Regulated | MidAmerican Funding | Interstate pipeline        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | MidAmerican Funding | Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | NV Energy        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 761 686 1,346 1,300
Regulated | NV Energy | Retail electric        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 708 638 1,219 1,167
Regulated | NV Energy | Retail gas        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 20 20 58 67
Regulated | NV Energy | Wholesale        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 10 6 25 20
Regulated | NV Energy | Transmission and distribution        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 22 22 43 45
Regulated | NV Energy | Interstate pipeline        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | NV Energy | Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 1 0 1 1
Regulated | Northern Powergrid        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 243 191 506 424
Regulated | Northern Powergrid | Retail electric        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | Northern Powergrid | Retail gas        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | Northern Powergrid | Wholesale        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | Northern Powergrid | Transmission and distribution        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 243 191 506 424
Regulated | Northern Powergrid | Interstate pipeline        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | Northern Powergrid | Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Pipeline Group        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 457 221 1,291 621
Regulated | BHE Pipeline Group | Retail electric        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Pipeline Group | Retail gas        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Pipeline Group | Wholesale        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 17 0
Regulated | BHE Pipeline Group | Transmission and distribution        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Pipeline Group | Interstate pipeline        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 458 221 1,273 621
Regulated | BHE Pipeline Group | Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue (1) 0 1 0
Regulated | BHE Transmission        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 178 164 350 333
Regulated | BHE Transmission | Retail electric        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Transmission | Retail gas        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Transmission | Wholesale        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Transmission | Transmission and distribution        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 178 164 350 333
Regulated | BHE Transmission | Interstate pipeline        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Transmission | Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Renewables        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Renewables | Retail electric        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Renewables | Retail gas        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Renewables | Wholesale        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Renewables | Transmission and distribution        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Renewables | Interstate pipeline        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE Renewables | Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE and Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue (27) (27) (68) (76)
Regulated | BHE and Other | Retail electric        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue (1) 0 (1) 0
Regulated | BHE and Other | Retail gas        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE and Other | Wholesale        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue (1) (1) (1) (2)
Regulated | BHE and Other | Transmission and distribution        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Regulated | BHE and Other | Interstate pipeline        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue (25) (26) (66) (74)
Regulated | BHE and Other | Other        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Nonregulated | Nonregulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 612 348 1,230 651
Nonregulated | PAC | Nonregulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 0 0 0 0
Nonregulated | MidAmerican Funding | Nonregulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 1 3 11 9
Nonregulated | NV Energy | Nonregulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 1 1 1 2
Nonregulated | Northern Powergrid | Nonregulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 8 5 18 12
Nonregulated | BHE Pipeline Group | Nonregulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 232 0 469 0
Nonregulated | BHE Transmission | Nonregulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 7 5 15 8
Nonregulated | BHE Renewables | Nonregulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue 239 212 405 371
Nonregulated | BHE and Other | Nonregulated        
Disaggregation of Revenue [Line Items]        
Total Customer Revenue $ 124 $ 122 $ 311 $ 249