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Retirement benefits (Tables) | 6 Months Ended
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Jun. 30, 2011
Retirement benefits |
Schedule of components of net periodic benefit cost for consolidated HEI |
|  | Three months ended June 30 |  | Six months ended June 30 |
|  | Pension benefits |  | Other benefits |  | Pension benefits |  | Other benefits |
(in thousands) |  | 2011 |  | 2010 |  | 2011 |  | 2010 |  | 2011 |  | 2010 |  | 2011 |  | 2010 |
Service cost |  | $ | 8,474 |  | $ | 6,772 |  | $ | 1,129 |  | $ | 1,131 |  | $ | 17,039 |  | $ | 13,382 |  | $ | 2,352 |  | $ | 2,219 |
Interest cost |  | 14,803 |  | 14,658 |  | 2,340 |  | 2,571 |  | 29,652 |  | 29,237 |  | 4,724 |  | 5,167 |
Expected return on plan assets |  | (15,352 | ) | (15,353 | ) | (2,618 | ) | (2,728 | ) | (30,636 | ) | (30,677 | ) | (5,226 | ) | (5,443 | )
Amortization of unrecognized transition obligation |  | — |  | — |  | (2 | ) | (2 | ) | — |  | — |  | (4 | ) | (4 | )
Amortization of prior service gain |  | (187 | ) | (187 | ) | (312 | ) | (56 | ) | (374 | ) | (374 | ) | (539 | ) | (111 | )
Recognized actuarial loss |  | 4,016 |  | 1,767 |  | 37 |  | 1 |  | 8,136 |  | 3,452 |  | 55 |  | 4 |
Net periodic benefit cost |  | 11,754 |  | 7,657 |  | 574 |  | 917 |  | 23,817 |  | 15,020 |  | 1,362 |  | 1,832 |
Impact of PUC D&Os |  | (556 | ) | 2,020 |  | 1,734 |  | 1,333 |  | (2,100 | ) | 5,028 |  | 2,752 |  | 2,621 |
Net periodic benefit cost (adjusted for impact of PUC D&Os) |  | $ | 11,198 |  | $ | 9,677 |  | $ | 2,308 |  | $ | 2,250 |  | $ | 21,717 |  | $ | 20,048 |  | $ | 4,114 |  | $ | 4,453

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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