Consolidated Balance Sheets - NPC - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,276	$ 1,290
Inventories	1,110	1,168
Other current assets	3,236	2,741
Total current assets	10,220	9,447
Regulatory assets	3,221	3,157
Other assets	2,780	2,758
Total assets	127,522	127,316
Current liabilities:
Accounts payable	1,548	1,867
Accrued interest	642	555
Accrued property, income and other taxes	515	582
Other current liabilities	1,948	1,626
Total current liabilities	9,775	9,138
Regulatory liabilities	7,355	7,221
Deferred income taxes	11,630	11,775
Other long-term liabilities	4,261	4,178
Total liabilities	80,471	80,339
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,377	6,377
Retained earnings	35,060	35,093
Accumulated other comprehensive loss, net	(1,440)	(1,552)
Total BHE shareholders' equity	43,089	43,010
Total liabilities and equity	$ 127,522	127,316
Common Stock, Shares Authorized	115,000,000
Common Stock, Shares, Issued	76,000,000
Common Stock, Shares, Outstanding	76,000,000
Nevada Power Company [Member]
Current assets:
Cash and cash equivalents	$ 92	25
Trade receivables, net	180	234
Inventories	65	69
Derivative Asset, Current	48	26
Regulatory assets	22	48
Prepayments	45	38
Other current assets	37	26
Total current assets	489	466
Property, plant and equipment, net	6,751	6,701
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	348	351
Regulatory assets	741	746
Other assets	71	72
Total assets	8,400	8,336
Current liabilities:
Accounts payable	189	181
Accrued interest	38	32
Accrued property, income and other taxes	38	25
Finance Lease, Liability, Current	30	27
Regulatory liabilities	63	50
Customer deposits	42	47
Asset Retirement Obligation, Current	18	25
Other current liabilities	38	22
Total current liabilities	456	409
Long-term debt	2,497	2,496
Finance Lease, Liability, Noncurrent	328	334
Regulatory liabilities	1,171	1,163
Deferred income taxes	740	738
Other long-term liabilities	267	257
Total liabilities	5,459	5,397
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	2,308	2,308
Retained earnings	636	634
Accumulated other comprehensive loss, net	(3)	(3)
Total BHE shareholders' equity	2,941	2,939
Total liabilities and equity	$ 8,400	$ 8,336
Common Stock, Par or Stated Value Per Share	$ 1.00	$ 1.00
Common Stock, Shares Authorized	1,000	1,000
Common Stock, Shares, Issued	1,000	1,000
Common Stock, Shares, Outstanding	1,000	1,000