Consolidated Statements of Changes in Common Stock Equity (Parenthetical)- HECO (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Less: amortization of net loss, prior service gain and transition obligation included in net periodic benefit cost, taxes (tax benefits)	$ (2,108)	$ (1,248)
Less: reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, taxes (tax benefits)	2,801	1,080
Hawaiian Electric Company, Inc. and Subsidiaries
Less: amortization of net loss, prior service gain and transition obligation included in net periodic benefit cost, taxes (tax benefits)	(2,849)	(1,155)
Less: reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, taxes (tax benefits)	$ 2,801	$ 1,080