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Consolidated Statements of Capitalization (Parenthetical) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Common stock, authorized shares | 200,000,000 | 200,000,000
Common stock, outstanding shares | 101,259,800 | 97,928,403
Hawaiian Electric Company, Inc. and Subsidiaries |  |
Common stock, authorized shares | 50,000,000 | 50,000,000
Common stock, outstanding shares | 15,429,105 | 14,665,264
Common stock, par value (in dollars per share) | $ 6.667 | $ 6.667
Hawaiian Electric Company, Inc. and Subsidiaries | Series C, 4.25% Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 20 | $ 20
Preferred stock, dividend rate | 4.25% | 4.25%
Hawaiian Electric Company, Inc. and Subsidiaries | Series D, 5.00% Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 20 | $ 20
Preferred stock, dividend rate | 5.00% | 5.00%
Hawaiian Electric Company, Inc. and Subsidiaries | Series E, 5.00% Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 20 | $ 20
Preferred stock, dividend rate | 5.00% | 5.00%
Hawaiian Electric Company, Inc. and Subsidiaries | Series H, 5.25% Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 20 | $ 20
Preferred stock, dividend rate | 5.25% | 5.25%
Hawaiian Electric Company, Inc. and Subsidiaries | Series I, 5.00% Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 20 | $ 20
Preferred stock, dividend rate | 5.00% | 5.00%
Hawaiian Electric Company, Inc. and Subsidiaries | Series J, 4.75% Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 20 | $ 20
Preferred stock, dividend rate | 4.75% | 4.75%
Hawaiian Electric Company, Inc. and Subsidiaries | Series K, 4.65% Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 20 | $ 20
Preferred stock, dividend rate | 4.65% | 4.65%
Hawaiian Electric Company, Inc. and Subsidiaries | Preferred Stock $20 Par Value |  |
Preferred stock, par value (in dollars per share) | $ 20 | $ 20
Preferred stock, Authorized shares | 5,000,000 | 5,000,000
Hawaiian Electric Company, Inc. and Subsidiaries | Preferred Stock $100 Par Value |  |
Preferred stock, par value (in dollars per share) | $ 100 | $ 100
Preferred stock, Authorized shares | 7,000,000 | 7,000,000
Hawaiian Electric Company, Inc (HECO) | 6.50%, series 2009, due 2039 |  |
Debt instrument, stated interest rate (as a percent) | 6.50% | 6.50%
Hawaiian Electric Company, Inc (HECO) | 4.60%, refunding series 2007B, due 2026 |  |
Debt instrument, stated interest rate (as a percent) | 4.60% | 4.60%
Hawaiian Electric Company, Inc (HECO) | 4.65%, series 2007A, due 2037 |  |
Debt instrument, stated interest rate (as a percent) | 4.65% | 4.65%
Hawaiian Electric Company, Inc (HECO) | 4.80%, refunding series 2005A, due 2025 |  |
Debt instrument, stated interest rate (as a percent) | 4.80% | 4.80%
Hawaiian Electric Company, Inc (HECO) | 5.00%, refunding series 2003B, due 2022 |  |
Debt instrument, stated interest rate (as a percent) | 5.00% | 5.00%
Hawaiian Electric Company, Inc (HECO) | 5.65%, series 1997A, due 2027 |  |
Debt instrument, stated interest rate (as a percent) | 5.65% | 5.65%
Hawaiian Electric Company, Inc (HECO) | Hawaiian Electric, 4.45%, Series 2013A, due 2022 |  |
Debt instrument, stated interest rate (as a percent) | 4.45% | 4.45%
Hawaiian Electric Company, Inc (HECO) | Hawaiian Electric, 4.84%, Series 2013B, due 2027 |  |
Debt instrument, stated interest rate (as a percent) | 4.84% | 4.84%
Hawaiian Electric Company, Inc (HECO) | Hawaiian Electric, 5.65%, Series 2013C, due 2043 |  |
Debt instrument, stated interest rate (as a percent) | 5.65% | 5.65%
Hawaiian Electric Company, Inc (HECO) | Senior notes 3.79%, Series 2012A, due 2018 |  |
Debt instrument, stated interest rate (as a percent) | 3.79% | 3.79%
Hawaiian Electric Company, Inc (HECO) | Senior notes 4.03%, Series 2012B, due 2020 |  |
Debt instrument, stated interest rate (as a percent) | 4.03% | 4.03%
Hawaiian Electric Company, Inc (HECO) | Senior notes 4.55%, due 2023 |  |
Debt instrument, stated interest rate (as a percent) | 4.55% | 4.55%
Hawaiian Electric Company, Inc (HECO) | Senior notes 4.72%, Series 2012D, due 2029 |  |
Debt instrument, stated interest rate (as a percent) | 4.72% | 4.72%
Hawaiian Electric Company, Inc (HECO) | Senior notes 5.39%, Series, 2012E, due 2042 |  |
Debt instrument, stated interest rate (as a percent) | 5.39% | 5.39%
Hawaiian Electric Company, Inc (HECO) | Senior notes 4.53%, Series, 2012F, due 2032 |  |
Debt instrument, stated interest rate (as a percent) | 4.53% | 4.53%
Hawaiian Electric Company, Inc (HECO) | 6.50% Junior subordinated deferrable interest debentures, series 2004, due 2034 |  |
Debt instrument, stated interest rate (as a percent) | 6.50% | 6.50%
Hawaii Electric Light Company, Inc. (HELCO) | Series G, 7.625% Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 100 | $ 100
Preferred stock, dividend rate | 7.625% | 7.625%
Hawaii Electric Light Company, Inc. (HELCO) | 6.50%, series 2009, due 2039 |  |
Debt instrument, stated interest rate (as a percent) | 6.50% | 6.50%
Hawaii Electric Light Company, Inc. (HELCO) | 4.60%, refunding series 2007B, due 2026 |  |
Debt instrument, stated interest rate (as a percent) | 4.60% | 4.60%
Hawaii Electric Light Company, Inc. (HELCO) | 4.65%, series 2007A, due 2037 |  |
Debt instrument, stated interest rate (as a percent) | 4.65% | 4.65%
Hawaii Electric Light Company, Inc. (HELCO) | 4.80%, refunding series 2005A, due 2025 |  |
Debt instrument, stated interest rate (as a percent) | 4.80% | 4.80%
Hawaii Electric Light Company, Inc. (HELCO) | 5.00%, refunding series 2003B, due 2022 |  |
Debt instrument, stated interest rate (as a percent) | 5.00% | 5.00%
Hawaii Electric Light Company, Inc. (HELCO) | 4.75%, refunding series 2003A, due 2020 |  |
Debt instrument, stated interest rate (as a percent) | 4.75% | 4.75%
Hawaii Electric Light Company, Inc. (HELCO) | 5.50%, refunding series 1999A, due 2014 |  |
Debt instrument, stated interest rate (as a percent) | 5.50% | 5.50%
Hawaii Electric Light Company, Inc. (HELCO) | 5.65%, series 1997A, due 2027 |  |
Debt instrument, stated interest rate (as a percent) | 5.65% | 5.65%
Hawaii Electric Light Company, Inc. (HELCO) | Hawaii Electric Light, 3.83%, Series 2013A, due 2020 |  |
Debt instrument, stated interest rate (as a percent) | 3.83% | 3.83%
Hawaii Electric Light Company, Inc. (HELCO) | Hawaii Electric Light, 4.45%, Series 2013B, due 2022 |  |
Debt instrument, stated interest rate (as a percent) | 4.45% | 4.45%
Hawaii Electric Light Company, Inc. (HELCO) | Hawaii Electric Light, 4.84%, Series 2013C, due 2027 |  |
Debt instrument, stated interest rate (as a percent) | 4.84% | 4.84%
Hawaii Electric Light Company, Inc. (HELCO) | Senior notes 3.79%, Series 2012A, due 2018 |  |
Debt instrument, stated interest rate (as a percent) | 3.79% | 3.79%
Hawaii Electric Light Company, Inc. (HELCO) | Senior notes 4.55%, due 2023 |  |
Debt instrument, stated interest rate (as a percent) | 4.55% | 4.55%
Maui Electric Company, Limited (MECO) | Series H, 7.625% Preferred Stock |  |
Preferred stock, par value (in dollars per share) | $ 100 | $ 100
Preferred stock, dividend rate | 7.625% | 7.625%
Maui Electric Company, Limited (MECO) | 4.60%, refunding series 2007B, due 2026 |  |
Debt instrument, stated interest rate (as a percent) | 4.60% | 4.60%
Maui Electric Company, Limited (MECO) | 4.65%, series 2007A, due 2037 |  |
Debt instrument, stated interest rate (as a percent) | 4.65% | 4.65%
Maui Electric Company, Limited (MECO) | 4.80%, refunding series 2005A, due 2025 |  |
Debt instrument, stated interest rate (as a percent) | 4.80% | 4.80%
Maui Electric Company, Limited (MECO) | 5.65%, series 1997A, due 2027 |  |
Debt instrument, stated interest rate (as a percent) | 5.65% | 5.65%
Maui Electric Company, Limited (MECO) | Maui Electric, 4.84%, Series 2013A, due 2027 |  |
Debt instrument, stated interest rate (as a percent) | 4.84% | 4.84%
Maui Electric Company, Limited (MECO) | Maui Electric, 5.65%, Series 2013B, due 2043 |  |
Debt instrument, stated interest rate (as a percent) | 5.65% | 5.65%
Maui Electric Company, Limited (MECO) | Senior notes 3.79%, Series 2012A, due 2018 |  |
Debt instrument, stated interest rate (as a percent) | 3.79% | 3.79%
Maui Electric Company, Limited (MECO) | Senior notes 4.03%, Series 2012B, due 2020 |  |
Debt instrument, stated interest rate (as a percent) | 4.03% | 4.03%
Maui Electric Company, Limited (MECO) | Senior notes 4.55%, due 2023 |  |
Debt instrument, stated interest rate (as a percent) | 4.55% | 4.55%

X
- Definition Face amount or stated value of common stock per share; generally not indicative of the fair market value per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition Face amount or stated value per share of stock classified as temporary equity; generally not indicative of the fair market value per share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 28 -Article 5 + Details
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- Definition The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 3, 4, 5, 6, 7, 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.27(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 28 -Subparagraph b -Article 5 + Details
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