Consolidated Statements of Comprehensive Income - HECO (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income for common stock	$ 47,706	$ 48,404	$ 124,822	$ 104,005
Retirement benefit plans:
Less: amortization of net loss, prior service gain and transition obligation included in net periodic benefit cost, net of tax benefits of $2,178 and $1,150 for the three months ended September 30, 2012 and 2011 and $6,532 and $3,999 for the nine months ended September 30, 2012 and 2011, respectively	3,826	2,068	11,467	5,556
Less: reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes of $2,129 and $1,074 for the three months ended September 30, 2012 and 2011 and $6,386 and $3,875 for the nine months ended September 30, 2012 and 2011, respectively	(3,342)	(1,732)	(10,026)	(6,084)
Other comprehensive income, net of taxes	1,586	3,181	3,447	5,810
Comprehensive income attributable to common shareholders	49,292	51,585	128,269	109,815
Hawaiian Electric Company, Inc. and Subsidiaries
Net income for common stock	38,375	37,959	95,051	74,172
Retirement benefit plans:
Less: amortization of net loss, prior service gain and transition obligation included in net periodic benefit cost, net of tax benefits of $2,178 and $1,150 for the three months ended September 30, 2012 and 2011 and $6,532 and $3,999 for the nine months ended September 30, 2012 and 2011, respectively	3,419	1,854	10,255	6,280
Less: reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes of $2,129 and $1,074 for the three months ended September 30, 2012 and 2011 and $6,386 and $3,875 for the nine months ended September 30, 2012 and 2011, respectively	(3,342)	(1,732)	(10,026)	(6,084)
Other comprehensive income, net of taxes	77	122	229	196
Comprehensive income attributable to common shareholders	$ 38,452	$ 38,081	$ 95,280	$ 74,368