Fair Value Measurements - BHE - Level 3 (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Commodity derivatives | ||||
| Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
| Beginning balance | $ (67) | $ (92) | $ (54) | $ (72) |
| Changes included in earnings | 0 | 0 | 0 | 0 |
| Changes in fair value recognized in regulatory assets | (2) | (11) | (21) | (42) |
| Settlements | 4 | 3 | 10 | 14 |
| Ending balance | (65) | (100) | (65) | (100) |
| Interest rate derivatives | ||||
| Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
| Beginning balance | 10 | 14 | 8 | 5 |
| Changes included in earnings | 3 | 0 | 5 | 9 |
| Changes in fair value recognized in regulatory assets | 0 | 0 | 0 | 0 |
| Settlements | 0 | 0 | 0 | 0 |
| Ending balance | $ 13 | $ 14 | $ 13 | $ 14 |