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Retirement benefits (Tables)

6 Months Ended

Jun. 30, 2024

Retirement Benefits [Abstract]

Schedule of Components of Net Periodic Benefit Cost for Consolidated HEI

The components of net periodic pension costs (NPPC) and net periodic benefit costs (NPBC) for HEI consolidated and Hawaiian Electric consolidated were as follows:

						Three months ended June 30																								Six months ended June 30
						Pension benefits												Other benefits												Pension benefits												Other benefits
(in thousands)						2024						2023						2024						2023						2024						2023						2024						2023
HEI consolidated
Service cost						$	11,265					$	11,396					$	282					$	343					$	22,529					$	22,792					$	563					$	687
Interest cost						26,506						25,622						1,867						2,157						53,012						51,243						3,734						4,314
Expected return on plan assets						(35,982)						(35,197)						(3,487)						(3,405)						(71,964)						(70,392)						(6,972)						(6,810)
Amortization of net prior period gain						—						—						—						(219)						—						—						—						(438)
Amortization of net actuarial (gain)/losses						111						189						(712)						(449)						222						377						(1,425)						(898)
Net periodic pension/benefit cost (return)						1,900						2,010						(2,050)						(1,573)						3,799						4,020						(4,100)						(3,145)
Impact of PUC D&Os						18,089						18,133						1,887						1,424						36,179						36,266						3,775						2,849
Net periodic pension/benefit cost (return) (adjusted for impact of PUC D&Os)						$	19,989					$	20,143					$	(163)					$	(149)					$	39,978					$	40,286					$	(325)					$	(296)
Hawaiian Electric consolidated
Service cost						$	10,916					$	11,018					$	278					$	340					$	21,832					$	22,037					$	556					$	680
Interest cost						24,627						23,699						1,779						2,063						49,254						47,397						3,558						4,126
Expected return on plan assets						(33,775)						(32,971)						(3,434)						(3,354)						(67,552)						(65,943)						(6,868)						(6,707)
Amortization of net prior period gain						—						—						—						(218)						—						—						—						(436)
Amortization of net actuarial (gain)/losses						11						18						(694)						(433)						23						37						(1,388)						(867)
Net periodic pension/benefit cost (return)						1,779						1,764						(2,071)						(1,602)						3,557						3,528						(4,142)						(3,204)
Impact of PUC D&Os						18,089						18,133						1,887						1,424						36,179						36,266						3,775						2,849
Net periodic pension/benefit cost (return) (adjusted for impact of PUC D&Os)						$	19,868					$	19,897					$	(184)					$	(178)					$	39,736					$	39,794					$	(367)					$	(355)

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- References

No definition available.

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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://fasb.org/us-gaap/role/ref/legacyRef
-Topic 715
-SubTopic 20
-Subparagraph (h)
-Name Accounting Standards Codification
-Paragraph 1
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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