XML 63 R39.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Summary of significant accounting policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Accounting Policies [Abstract] |
Schedule of future minimum lease payments | HEI’s consolidated and the Utilities’ future minimum lease payments are as follows:
(in millions) | HEI |  | Hawaiian Electric
2019 | $ | 11 |  |  | $ | 6 |
2020 | 9 |  |  | 6 |
2021 | 8 |  |  | 5 |
2022 | 5 |  |  | 2 |
2023 | 4 |  |  | 2 |
Thereafter | 12 |  |  | 3 |
| $ | 49 |  |  | $ | 24 |
Summary of impact to prior period financial statements of the adoption of ASU 2017-07 | The following table summarizes the impact to the prior period financial statements of the adoption of ASU No. 2017-07:
| 2017 |  | 2016
(in thousands) | As previously filed | Adjustment from adoption of ASU No. 2017-07 | As currently reported |  | As previously filed | Adjustment from adoption of ASU No. 2017-07 | As currently reported
HEI Consolidated Statements of Income |  |  |  |  |
Expenses |  |  |  |  |  |  |
Electric utility | $ | 2,000,045 |  | $ | (6,003 | ) | $ | 1,994,042 |  |  | $ | 1,809,900 |  | $ | (5,602 | ) | $ | 1,804,298 |
Bank | 198,924 |  | (820 | ) | 198,104 |  |  | 198,572 |  | (875 | ) | 197,697 |
Other | 18,365 |  | (1,119 | ) | 17,246 |  |  | 24,007 |  | (1,186 | ) | 22,821 |
Total expenses | $ | 2,217,334 |  | $ | (7,942 | ) | $ | 2,209,392 |  |  | $ | 2,032,479 |  | $ | (7,663 | ) | $ | 2,024,816 |
Operating income |  |  |  |  |  |  |
Electric utility | $ | 257,521 |  | $ | 6,003 |  | $ | 263,524 |  |  | $ | 284,468 |  | $ | 5,602 |  | $ | 290,070 |
Bank | 98,716 |  | 820 |  | 99,536 |  |  | 87,352 |  | 875 |  | 88,227 |
Other | (17,946 | ) | 1,119 |  | (16,827 | ) |  | (23,645 | ) | 1,186 |  | (22,459 | )
Total operating income | $ | 338,291 |  | $ | 7,942 |  | $ | 346,233 |  |  | $ | 348,175 |  | $ | 7,663 |  | $ | 355,838 |
Retirement defined benefits expense--other than service costs | $ | — |  | $ | (7,942 | ) | $ | (7,942 | ) |  | $ | — |  | $ | (7,663 | ) | $ | (7,663 | )
Hawaiian Electric Consolidated Statements of Income |  |  |  |
Other operation and maintenance | $ | 417,910 |  | $ | (6,003 | ) | $ | 411,907 |  |  | $ | 405,533 |  | $ | (5,602 | ) | $ | 399,931 |
Total expense | 2,000,045 |  | (6,003 | ) | 1,994,042 |  |  | 1,809,900 |  | (5,602 | ) | 1,804,298 |
Operating income | 257,521 |  | 6,003 |  | 263,524 |  |  | 284,468 |  | 5,602 |  | 290,070 |
Retirement defined benefits expense--other than service costs | — |  | (6,003 | ) | (6,003 | ) |  | — |  | (5,602 | ) | (5,602 | )
Hawaiian Electric Consolidating Statements of Income (in Note 3) |  |  |  |
Hawaiian Electric (parent only) |  |  |  |  |  |  |
Other operation and maintenance | 279,440 |  | (5,049 | ) | 274,391 |  |  | 273,176 |  | (5,058 | ) | 268,118 |
Total expense | 1,425,655 |  | (5,049 | ) | 1,420,606 |  |  | 1,277,245 |  | (5,058 | ) | 1,272,187 |
Operating income | 172,849 |  | 5,049 |  | 177,898 |  |  | 197,139 |  | 5,058 |  | 202,197 |
Retirement defined benefits expense--other than service costs | — |  | (5,049 | ) | (5,049 | ) |  | — |  | (5,058 | ) | (5,058 | )
| 2017 |  | 2016
(in thousands) | As previously filed | Adjustment from adoption of ASU No. 2017-07 | As currently reported |  | As previously filed | Adjustment from adoption of ASU No. 2017-07 | As currently reported
Hawaiian Electric Consolidating Statements of Income (in Note 3) |  |  |  |
Hawaii Electric Light |  |  |  |  |  |  |
Other operation and maintenance | $ | 66,277 |  | $ | (93 | ) | $ | 66,184 |  |  | $ | 63,897 |  | $ | 319 |  | $ | 64,216 |
Total expense | 287,868 |  | (93 | ) | 287,775 |  |  | 266,823 |  | 319 |  | 267,142 |
Operating income | 45,599 |  | 93 |  | 45,692 |  |  | 44,562 |  | (319 | ) | 44,243 |
Retirement defined benefits expense--other than service costs | — |  | (93 | ) | (93 | ) |  | — |  | 319 |  | 319 |
Maui Electric |  |  |  |  |  |  |
Other operation and maintenance | 72,193 |  | (861 | ) | 71,332 |  |  | 68,460 |  | (863 | ) | 67,597 |
Total expense | 286,522 |  | (861 | ) | 285,661 |  |  | 265,832 |  | (863 | ) | 264,969 |
Operating income | 39,156 |  | 861 |  | 40,017 |  |  | 42,873 |  | 863 |  | 43,736 |
Retirement defined benefits expense--other than service costs | — |  | (861 | ) | (861 | ) |  | — |  | (863 | ) | (863 | )
ASB Statements of Income Data (in Note 4) |  |  |  |  |  |
Compensation and employee benefits | 95,751 |  | (820 | ) | 94,931 |  |  | 90,117 |  | (875 | ) | 89,242 |
Other expense | 19,324 |  | 820 |  | 20,144 |  |  | 18,487 |  | 875 |  | 19,362 |
Summary of amounts in income tax expense related to investments in qualifying affordable housing projects | The table below summarizes the amounts in income tax expense related to ASB’s LIHTC investments:
Years ended December 31 | 2018 |  |  | 2017 |  |  | 2016 |
(in millions) |  |  |  |  |  |  |  |
Amounts in income taxes related to low-income housing tax credit investments |  |  |  |  |  |  |  |
Amortization recognized in the provision for income taxes | $ | (7.7 | ) |  | $ | (7.4 | ) |  | $ | (5.8 | )
Tax credits and other tax benefits recognized in the provision for income taxes | 10.9 |  |  | 10.7 |  |  | 8.4 |
Net benefit to income tax expense | $ | 3.2 |  |  | $ | 3.3 |  |  | $ | 2.6 |

X
- Definition Summary Of Amounts In Income Tax Expense, Affordable Housing Projects [Table Text Block] + References No definition available. + Details
Name: | he_SummaryOfAmountsInIncomeTaxExpenseAffordableHousingProjectsTableTextBlock
Namespace Prefix: | he_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
Name: | us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=109236672&loc=d3e765-108305 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.10-01.(b)(6)) -URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22580-107794 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=109236672&loc=d3e725-108305 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794 + Details
Name: | us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration