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v3.3.0.814

Summary of significant accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2014
Accounting Policies [Abstract] |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles | The table below illustrates the effects of the revision or restatements on the previously filed financial statements:
|  | 2014 |  | 2013
|  | As |  |  |  |  |  |  | As |  |  |  |  |
|  | previously |  |  | As |  |  |  |  | previously |  |  | As |  |  |
(in thousands) |  | filed |  |  | revised |  |  | Difference |  |  | filed |  |  | restated |  |  | Difference |
Consolidated Statements of Cash Flows and Note 3 |  |  |  |  |  |  |  |  |  |  |  |
HEI consolidated |  |  |  |  |  |  |  |  |  |  |  |
Cash flows from operating activities |  |  |  |  |  |  |  |  |  |  |  |
Other amortization |  | $ | 8,476 |  |  | $ | 6,795 |  |  | $ | (1,681 | ) |  | N/A |  |  | N/A |  |  | N/A |
Increase in deferred income taxes |  | 59,184 |  |  | 103,916 |  |  | 44,732 |  |  | N/A |  |  | N/A |  |  | N/A |
Share-based compensation expense |  | — |  |  | 9,287 |  |  | 9,287 |  |  | $ | — |  |  | $ | 7,780 |  |  | $ | 7,780 |
Increase/(decrease) in accounts, interest and dividends payable |  | (92,294 | ) |  | (67,189 | ) |  | 25,105 |  |  | (23,153 | ) |  | 12,406 |  |  | 35,559 |
Change in prepaid and accrued income taxes and utility revenue taxes |  | 12,845 |  |  | (39,091 | ) |  | (51,936 | ) |  | N/A |  |  | N/A |  |  | N/A |
Change in other assets and liabilities |  | (93,400 | ) |  | (94,966 | ) |  | (1,566 | ) |  | (2,779 | ) |  | (11,696 | ) |  | (8,917 | )
Net cash provided by operating activities |  | 301,479 |  |  | 325,420 |  |  | 23,941 |  |  | 327,146 |  |  | 361,568 |  |  | 34,422 |
Cash flows from investing activities |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  | (339,721 | ) |  | (364,826 | ) |  | (25,105 | ) |  | (353,879 | ) |  | (389,438 | ) |  | (35,559 | )
Cash flows from investing activities-Other |  | (39 | ) |  | 1,125 |  |  | 1,164 |  |  | 40 |  |  | 1,177 |  |  | 1,137 |
Net cash used in investing activities |  | (568,508 | ) |  | (592,449 | ) |  | (23,941 | ) |  | (563,760 | ) |  | (598,182 | ) |  | (34,422 | )
Hawaiian Electric consolidated |  |  |  |  |  |  |  |  |  |  |  |
Cash flows from operating activities |  |  |  |  |  |  |  |  |  |  |  |
Other amortization |  | 8,091 |  |  | 6,410 |  |  | (1,681 | ) |  | N/A |  |  | N/A |  |  | N/A |
Increase/(decrease) in accounts payable |  | (90,632 | ) |  | (65,527 | ) |  | 25,105 |  |  | (20,828 | ) |  | 14,731 |  |  | 35,559 |
Change in other assets and liabilities |  | (62,959 | ) |  | (62,442 | ) |  | 517 |  |  | (31,499 | ) |  | (32,636 | ) |  | (1,137 | )
Net cash provided by operating activities |  | 283,054 |  |  | 306,995 |  |  | 23,941 |  |  | 292,443 |  |  | 326,865 |  |  | 34,422 |
Cash flows from investing activities |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  | (311,574 | ) |  | (336,679 | ) |  | (25,105 | ) |  | (342,485 | ) |  | (378,044 | ) |  | (35,559 | )
Cash flows from investing activities-Other |  | — |  |  | 1,164 |  |  | 1,164 |  |  | (230 | ) |  | 907 |  |  | 1,137 |
Net cash used in investing activities |  | (269,768 | ) |  | (293,709 | ) |  | (23,941 | ) |  | (310,555 | ) |  | (344,977 | ) |  | (34,422 | )
Note 12 |  |  |  |  |  |  |  |  |  |  |  |
HEI consolidated |  |  |  |  |  |  |  |  |  |  |  |
Federal current taxes |  | 33,762 |  |  | (10,970 | ) |  | (44,732 | ) |  | N/A |  |  | N/A |  |  | N/A |
Federal deferred taxes |  | 46,427 |  |  | 91,159 |  |  | 44,732 |  |  | N/A |  |  | N/A |  |  | N/A |
Note 13 |  |  |  |  |  |  |  |  |  |  |  |
HEI consolidated |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment - unpaid invoices and accruals (in millions) |  | 68 |  |  | 43 |  |  | (25 | ) |  | 24 |  |  | (12 | ) |  | (36 | )
Hawaiian Electric consolidated |  |  |  |  |  |  |  |  |  |  |  |
Electric utility property, plant and equipment - unpaid invoices and accruals (in millions) |  | 65 |  |  | 40 |  |  | (25 | ) |  | 24 |  |  | (12 | ) |  | (36 | )
N/A - Not applicable.
|  | 2012
|  | As previously |  |  | As |  |  |
(in thousands) |  | filed |  |  | restated |  |  | Difference |
Consolidated Statements of Cash Flows and Note 3 |  |  |  |  |  |
HEI consolidated |  |  |  |  |  |
Cash flows from operating activities |  |  |  |  |  |
Share-based compensation expense |  | $ | — |  |  | $ | 6,698 |  |  | $ | 6,698 |
Increase/(decrease) in accounts, interest and dividends payable |  | (39,738 | ) |  | 5,497 |  |  | 45,235 |
Change in other assets and liabilities |  | (94,734 | ) |  | (102,275 | ) |  | (7,541 | )
Net cash provided by operating activities |  | 234,542 |  |  | 278,934 |  |  | 44,392 |
Cash flows from investing activities |  |  |  |  |  |
Capital expenditures |  | (325,480 | ) |  | (370,715 | ) |  | (45,235 | )
Cash flows from investing activities-Other |  | 935 |  |  | 1,778 |  |  | 843 |
Net cash used in investing activities |  | (427,047 | ) |  | (471,439 | ) |  | (44,392 | )
Hawaiian Electric consolidated |  |  |  |  |  |
Cash flows from operating activities |  |  |  |  |  |
Increase/(decrease) in accounts payable |  | (38,913 | ) |  | 6,322 |  |  | 45,235 |
Change in other assets and liabilities |  | (73,419 | ) |  | (74,262 | ) |  | (843 | )
Net cash provided by operating activities |  | 177,231 |  |  | 221,623 |  |  | 44,392 |
Cash flows from investing activities |  |  |  |  |  |
Capital expenditures |  | (310,091 | ) |  | (355,326 | ) |  | (45,235 | )
Cash flows from investing activities-Other |  | — |  |  | 843 |  |  | 843 |
Net cash used in investing activities |  | (264,109 | ) |  | (308,501 | ) |  | (44,392 | )
Note 13 |  |  |  |  |  |
HEI consolidated |  |  |  |  |  |
Property, plant and equipment - unpaid invoices and accruals (in millions) |  | 37 |  |  | (8 | ) |  | (45 | )
Hawaiian Electric consolidated |  |  |  |  |  |
Electric utility property, plant and equipment - unpaid invoices and accruals (in millions) |  | 37 |  |  | (8 | ) |  | (45 | )
Schedule of earnings per share basic and diluted under two-class method | Under the two-class method, HEI's EPS was comprised as follows for both participating securities and unrestricted common stock:
| 2014 |  | 2013 |  | 2012
| Basic |  |  | Diluted |  |  | Basic |  |  | Diluted |  |  | Basic |  |  | Diluted |
Distributed earnings | $ | 1.24 |  |  | $ | 1.24 |  |  | $ | 1.24 |  |  | $ | 1.24 |  |  | $ | 1.24 |  |  | $ | 1.24 |
Undistributed earnings | 0.41 |  |  | 0.40 |  |  | 0.39 |  |  | 0.38 |  |  | 0.19 |  |  | 0.18 |
| $ | 1.65 |  |  | $ | 1.64 |  |  | $ | 1.63 |  |  | $ | 1.62 |  |  | $ | 1.43 |  |  | $ | 1.42 |

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