Schedule I Condensed Financial Statements (Parent Company Only) - Condensed Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,096	$ 1,290
Accounts receivable - affiliate	2,468	2,107
Other current assets	1,628	2,458
Total current assets	8,248	9,447
Goodwill	11,650	11,506	$ 9,722
Other assets	3,144	2,758
Total assets	132,065	127,316	100,051
Current liabilities:
Total current liabilities	8,762	9,138
BHE senior debt	13,003	12,997
BHE junior subordinated debentures	100	100
Long-term debt	49,762	49,866
Other long-term liabilities	4,319	4,178
Total liabilities	81,476	80,339
Shareholders' equity:
Preferred stock	1,650	3,750
Common stock	0	0
Additional paid-in capital	6,374	6,377
Long-term income tax receivable	744	658
Retained earnings	40,754	35,093
Accumulated other comprehensive loss, net	(1,340)	(1,552)
Total shareholder's equity	46,694	43,010
Noncontrolling interest	3,895	3,967
Total equity	50,589	46,977	$ 32,578	$ 29,723
Total liabilities and shareholder's equity	132,065	127,316
Parent Company
Current assets:
Cash and cash equivalents	18	623
Accounts receivable - affiliate	117	96
Notes receivable - affiliate	189	177
Income tax receivable	23	19
Other current assets	13	1,301
Total current assets	360	2,216
Investments in subsidiaries	58,190	48,654
Other	237	6,103
Goodwill	1,221	1,221
Other assets	1,101	488
Total assets	61,109	58,682
Current liabilities:
Accounts payable and other current liabilities	397	341
Note payable to affiliate	353	200
Current portion of senior debt	0	450
Total current liabilities	750	991
BHE senior debt	13,003	12,997
BHE junior subordinated debentures	100	100
Notes payable - affiliate	2	116
Other long-term liabilities	560	1,468
Total liabilities	14,415	15,672
Shareholders' equity:
Preferred stock	1,650	3,750
Common stock	0	0
Additional paid-in capital	6,374	6,377
Long-term income tax receivable	744	658
Retained earnings	40,754	35,093
Accumulated other comprehensive loss, net	(1,340)	(1,552)
Total shareholder's equity	46,694	43,010
Noncontrolling interest	0	0
Total equity	46,694	43,010
Total liabilities and shareholder's equity	61,109	58,682
MidAmerican Funding LLC
Current assets:
Receivables from affiliates	1	1
Investments in subsidiaries	10,070	9,176
Total assets	10,071	9,177
Current liabilities:
Other accrued current liabilities	5	5
Notes payable - affiliate	25	13
Long-term debt	240	240
Total liabilities	270	258
Shareholders' equity:
Paid-in capital	1,679	1,679
Retained earnings	8,122	7,240
Total shareholder's equity	9,801	8,919
Total liabilities and shareholder's equity	$ 10,071	$ 9,177