Consolidated Balance Sheets - HECO (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Other long-term assets
Total assets	$ 9,632,952	$ 9,592,731
Capitalization
Retained earnings	210,044	201,640
Cumulative preferred stock - not subject to mandatory redemption
Commitments and contingencies (Note 5)
Current liabilities
Interest and preferred dividends payable	23,778	25,041
Deferred credits and other liabilities
Deferred income taxes	375,510	354,051
Contributions in aid of construction	378,039	356,203
Total liabilities and shareholders' equity	9,632,952	9,592,731
Hawaiian Electric Company, Inc. and Subsidiaries
Utility plant, at cost
Land	51,504	51,514
Plant and equipment	5,095,080	5,052,027
Less accumulated depreciation	(1,980,964)	(1,966,894)
Construction in progress	150,667	138,838
Net utility plant	3,316,287	3,275,485
Current assets
Cash and cash equivalents	5,850	48,806
Customer accounts receivable, net	158,879	183,328
Accrued unbilled revenues, net	126,642	137,826
Other accounts receivable, net	8,071	8,623
Fuel oil stock, at average cost	186,006	171,548
Materials and supplies, at average cost	46,749	43,188
Prepayments and other	31,210	34,602
Regulatory assets	26,364	20,283
Total current assets	589,771	648,204
Other long-term assets
Regulatory assets	651,310	649,106
Unamortized debt expense	12,477	12,786
Other	86,219	86,361
Total other long-term assets	750,006	748,253
Total assets	4,656,064	4,671,942
Capitalization
Common stock ($6 2/3 par value, authorized 50,000,000 shares; outstanding 14,233,723 shares)	94,911	94,911
Premium on capital stock	426,921	426,921
Retained earnings	893,323	884,284
Accumulated other comprehensive income (loss), net of income taxes	45	(32)
Common stock equity	1,415,200	1,406,084
Cumulative preferred stock - not subject to mandatory redemption	34,293	34,293
Commitments and contingencies (Note 5)
Long-term debt, net	1,000,602	1,000,570
Total capitalization	2,450,095	2,440,947
Current liabilities
Short-term borrowings - nonaffiliates	84,942
Current portion of long-term debt		57,500
Accounts payable	158,691	188,580
Interest and preferred dividends payable	18,835	19,483
Taxes accrued	183,273	224,768
Other	58,947	69,353
Total current liabilities	504,688	559,684
Deferred credits and other liabilities
Deferred income taxes	357,974	337,863
Regulatory liabilities	316,560	315,466
Unamortized tax credits	61,941	60,614
Retirement benefits liability	478,517	495,121
Other	108,250	106,044
Total deferred credits and other liabilities	1,323,242	1,315,108
Contributions in aid of construction	378,039	356,203
Total liabilities and shareholders' equity	$ 4,656,064	$ 4,671,942