Consolidated Balance Sheets - SPPC - 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
Short-term debt	2,699	2,286
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
Sierra Pacific Power Company [Member]
Current assets:
Cash and cash equivalents	$ 8	19
Trade receivables, net	93	97
Inventories	74	77
Derivative Asset, Current	16	9
Regulatory assets	91	67
Other current assets	38	36
Total current assets	320	305
Property, plant and equipment, net	3,188	3,164
Regulatory assets	270	267
Other assets	185	183
Total assets	3,963	3,919
Current liabilities:
Accounts payable	103	108
Accrued interest	11	14
Accrued property, income and other taxes	16	14
Short-term debt	55	45
Regulatory liabilities	28	34
Customer deposits	14	15
Other current liabilities	33	25
Total current liabilities	260	255
Long-term debt, carrying value	1,164	1,164
Finance Lease, Liability, Noncurrent	119	121
Regulatory liabilities	466	463
Deferred income taxes	382	374
Other long-term liabilities	133	131
Total liabilities	2,524	2,508
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	1,111	1,111
Retained earnings	329	301
Accumulated other comprehensive loss, net	(1)	(1)
Total BHE shareholders' equity	1,439	1,411
Total liabilities and equity	$ 3,963	$ 3,919
Common Stock, Par or Stated Value Per Share	$ 3.75	$ 3.75
Common Stock, Shares Authorized	20,000,000	20,000,000
Common Stock, Shares, Issued	1,000	1,000
Common Stock, Shares, Outstanding	1,000	1,000