XML 84 R113.htm IDEA: XBRL DOCUMENT v2.4.1.9

Income taxes Deferred Tax Assets and Liabilities Due to Book/Tax Differences (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets
Net operating loss	$ 0us-gaap_DeferredTaxAssetsOperatingLossCarryforwards	$ 0us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Other	58,352us-gaap_DeferredTaxAssetsOther	57,239us-gaap_DeferredTaxAssetsOther
Total deferred tax assets	58,352us-gaap_DeferredTaxAssetsGross	57,239us-gaap_DeferredTaxAssetsGross
Deferred tax liabilities
Property, plant and equipment	448,723us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment	378,280us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Repairs deduction	86,408he_DeferredTaxLiabilitiesChangeInAccountingMethodRelatedToRepairs	75,127he_DeferredTaxLiabilitiesChangeInAccountingMethodRelatedToRepairs
Regulatory assets, excluding amounts attributable to property, plant and equipment	33,795us-gaap_DeferredTaxLiabilitiesRegulatoryAssets	33,251us-gaap_DeferredTaxLiabilitiesRegulatoryAssets
Deferred RAM and RBA revenues	32,889he_DeferredTaxLiabilitiesDeferredRateAdjustmentMechanismandRBARevenues	0he_DeferredTaxLiabilitiesDeferredRateAdjustmentMechanismandRBARevenues
Retirement benefits	25,336he_DeferredTaxLiabilitiesDeferredExpensePostretirementBenefits	29,280he_DeferredTaxLiabilitiesDeferredExpensePostretirementBenefits
Other	62,935us-gaap_DeferredTaxLiabilitiesOther	70,561us-gaap_DeferredTaxLiabilitiesOther
Total deferred tax liabilities	690,086us-gaap_DeferredIncomeTaxLiabilities	586,499us-gaap_DeferredIncomeTaxLiabilities
Deferred income taxes (credit)	631,734us-gaap_DeferredTaxLiabilitiesNoncurrent	529,260us-gaap_DeferredTaxLiabilitiesNoncurrent
Total deferred tax liabilities	631,734us-gaap_DeferredTaxLiabilities	529,260us-gaap_DeferredTaxLiabilities
Prepayments and other (Current assets-debit)
Deferred tax liabilities
Total deferred tax liabilities	0us-gaap_DeferredTaxLiabilities / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember	0us-gaap_DeferredTaxLiabilities / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Other (Current liabilities-credit)
Deferred tax liabilities
Total deferred tax liabilities	0us-gaap_DeferredTaxLiabilities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember	0us-gaap_DeferredTaxLiabilities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember
Hawaiian Electric Company, Inc. and Subsidiaries
Deferred tax assets
Net operating loss	51,936us-gaap_DeferredTaxAssetsOperatingLossCarryforwards / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	19,848us-gaap_DeferredTaxAssetsOperatingLossCarryforwards / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Other	17,663us-gaap_DeferredTaxAssetsOther / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	17,295us-gaap_DeferredTaxAssetsOther / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Total deferred tax assets	69,599us-gaap_DeferredTaxAssetsGross / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	37,143us-gaap_DeferredTaxAssetsGross / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Deferred tax liabilities
Property, plant and equipment	446,259us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	375,771us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Repairs deduction	86,408he_DeferredTaxLiabilitiesChangeInAccountingMethodRelatedToRepairs / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	75,127he_DeferredTaxLiabilitiesChangeInAccountingMethodRelatedToRepairs / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Regulatory assets, excluding amounts attributable to property, plant and equipment	33,795us-gaap_DeferredTaxLiabilitiesRegulatoryAssets / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	33,251us-gaap_DeferredTaxLiabilitiesRegulatoryAssets / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Deferred RAM and RBA revenues	32,889he_DeferredTaxLiabilitiesDeferredRateAdjustmentMechanismandRBARevenues / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Retirement benefits	28,758he_DeferredTaxLiabilitiesDeferredExpensePostretirementBenefits / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	23,851he_DeferredTaxLiabilitiesDeferredExpensePostretirementBenefits / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Other	14,929us-gaap_DeferredTaxLiabilitiesOther / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	15,602us-gaap_DeferredTaxLiabilitiesOther / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Total deferred tax liabilities	643,038us-gaap_DeferredIncomeTaxLiabilities / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	523,602us-gaap_DeferredIncomeTaxLiabilities / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Deferred income taxes (credit)	602,872us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	507,161us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Total deferred tax liabilities	573,439us-gaap_DeferredTaxLiabilities / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	486,459us-gaap_DeferredTaxLiabilities / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Hawaiian Electric Company, Inc. and Subsidiaries | Prepayments and other (Current assets-debit)
Deferred tax liabilities
Total deferred tax liabilities	(32,915)us-gaap_DeferredTaxLiabilities / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	(20,702)us-gaap_DeferredTaxLiabilities / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember
Hawaiian Electric Company, Inc. and Subsidiaries | Other (Current liabilities-credit)
Deferred tax liabilities
Total deferred tax liabilities	$ 3,482us-gaap_DeferredTaxLiabilities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember	$ 0us-gaap_DeferredTaxLiabilities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember / dei_LegalEntityAxis = he_HawaiianElectricCompanyAndSubsidiariesMember

X

- Definition

The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis and the basis in accordance with generally accepted accounting principles of change in accounting method related to repairs which will increase future taxable income when such basis difference reverses.

+ References

No definition available.

+ Details

Name:	he_DeferredTaxLiabilitiesChangeInAccountingMethodRelatedToRepairs
Namespace Prefix:	he_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis and the basis in accordance with generally accepted accounting principles of retirement benefits which will increase future taxable income when such basis difference reverses.

+ References

No definition available.

+ Details

Name:	he_DeferredTaxLiabilitiesDeferredExpensePostretirementBenefits
Namespace Prefix:	he_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Deferred Tax Liabilities, Deferred Rate Adjustment Mechanism and RBA Revenues

+ References

No definition available.

+ Details

Name:	he_DeferredTaxLiabilitiesDeferredRateAdjustmentMechanismandRBARevenues
Namespace Prefix:	he_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of deferred tax liability attributable to taxable temporary differences.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Deferred Tax Liability

-URI http://asc.fasb.org/extlink&oid=6510232



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph b(2)

-Article 7

+ Details

Name:	us-gaap_DeferredIncomeTaxLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Deferred Tax Asset

-URI http://asc.fasb.org/extlink&oid=6510090

+ Details

Name:	us-gaap_DeferredTaxAssetsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_DeferredTaxAssetsNetAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 25

-Paragraph 20

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314

+ Details

Name:	us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 25

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319

+ Details

Name:	us-gaap_DeferredTaxAssetsOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318

+ Details

Name:	us-gaap_DeferredTaxLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_DeferredTaxLiabilitiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed after one year (or the normal operating cycle, if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31958-109318

+ Details

Name:	us-gaap_DeferredTaxLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 25

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319

+ Details

Name:	us-gaap_DeferredTaxLiabilitiesOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 25

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319

+ Details

Name:	us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of deferred tax liability attributable to taxable temporary differences from regulatory assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 25

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319

+ Details

Name:	us-gaap_DeferredTaxLiabilitiesRegulatoryAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	dei_LegalEntityAxis=he_HawaiianElectricCompanyAndSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: