Consolidated Balance Sheets - HECO (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Other long-term assets
Total assets	$ 9,592,731	$ 9,085,344
Capitalization (see Consolidated Statements of Capitalization)
Cumulative preferred stock - not subject to mandatory redemption
Commitments and contingencies (see Note 11)
Long-term debt, net		1,364,942
Current liabilities
Interest and preferred dividends payable	25,041	27,814
Deferred credits and other liabilities
Deferred income taxes	354,051	278,958
Contributions in aid of construction	356,203	335,364
Total liabilities and shareholders' equity	9,592,731	9,085,344
Hawaiian Electric Company, Inc. and Subsidiaries
Utility plant, at cost
Land	51,514	51,364
Plant and equipment	5,052,027	4,896,974
Less accumulated depreciation	(1,966,894)	(1,941,059)
Construction in progress	138,838	101,562
Net utility plant	3,275,485	3,108,841
Current assets
Cash and equivalents	48,806	122,936
Customer accounts receivable, net	183,328	138,171
Accrued unbilled revenues, net	137,826	104,384
Other accounts receivable, net	8,623	9,376
Fuel oil stock, at average cost	171,548	152,705
Materials and supplies, at average cost	43,188	36,717
Prepayments and other	34,602	55,216
Regulatory assets	20,283	7,349
Total current assets	648,204	626,854
Other long-term assets
Regulatory assets	649,106	470,981
Unamortized debt expense	12,786	14,030
Other	86,361	64,974
Total other long-term assets	748,253	549,985
Total assets	4,671,942	4,285,680
Capitalization (see Consolidated Statements of Capitalization)
Common stock equity	1,406,084	1,337,398
Cumulative preferred stock - not subject to mandatory redemption	34,293	34,293
Commitments and contingencies (see Note 11)
Long-term debt, net	1,000,570	1,057,942
Total capitalization	2,440,947	2,429,633
Current liabilities
Current portion of long-term debt	57,500
Accounts payable	188,580	178,959
Interest and preferred dividends payable	19,483	20,603
Taxes accrued	224,768	175,960
Other	69,353	56,354
Total current liabilities	559,684	431,876
Deferred credits and other liabilities
Deferred income taxes	337,863	269,286
Regulatory liabilities	315,466	296,797
Unamortized tax credits	60,614	58,810
Retirement benefits liability	495,121	355,844
Other	106,044	108,070
Total deferred credits and other liabilities	1,315,108	1,088,807
Contributions in aid of construction	356,203	335,364
Total liabilities and shareholders' equity	$ 4,671,942	$ 4,285,680