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Electric utility segment - Condensed consolidating statement of cash flows (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Cash flows from operating activities |  |  |  |
Net income | $ 66,371 | $ 60,544 | $ 153,618 | $ 134,344
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Depreciation of property, plant and equipment |  |  | 159,646 | 150,123
Other amortization |  |  | 31,473 | 15,362
Deferred income taxes |  |  | 10,823 | 21,397
Allowance for equity funds used during construction | (1,962) | (3,482) | (8,239) | (8,908)
Other |  |  | (4,524) | (1,350)
Changes in assets and liabilities |  |  |  |
Decrease (increase) in fuel oil stock |  |  | (5,060) | 6,177
Increase in regulatory assets |  |  | (6,474) | 3,922
Change in prepaid and accrued income taxes, tax credits and revenue taxes |  |  | (32,006) | 2,828
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability |  |  | 7,517 | 670
Net cash provided by operating activities |  |  | 257,679 | 320,114
Cash flows from investing activities |  |  |  |
Capital expenditures |  |  | (404,984) | (343,375)
Contributions in aid of construction |  |  | 24,361 | 40,603
Other |  |  | 13,669 | 1,345
Net cash used in investing activities |  |  | (541,761) | (469,330)
Cash flows from financing activities |  |  |  |
Common stock dividends |  |  | (101,235) | (101,149)
Proceeds from issuance of long-term debt |  |  | 100,000 | 265,000
Funds transferred for redemption of special purpose revenue bonds |  |  | (1,867) | (265,000)
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less |  |  | 85,369 | 24,498
Other |  |  | (5,668) | (9,531)
Net cash provided by financing activities |  |  | 194,255 | 72,937
Net decrease in cash and cash equivalents |  |  | (89,827) | (76,279)
Cash and cash equivalents, beginning of period |  |  | 261,881 | 278,452
Cash and cash equivalents, end of period | 172,054 | 202,173 | 172,054 | 202,173
Consolidating adjustments |  |  |  |
Cash flows from operating activities |  |  |  |
Net income | (16,636) | (12,767) | (35,041) | (29,306)
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Equity in earnings of subsidiaries |  |  | 35,041 | 29,306
Common stock dividends received from subsidiaries |  |  | (20,481) | (20,581)
Depreciation of property, plant and equipment |  |  | 0 | 0
Other amortization |  |  | 0 | 0
Deferred income taxes |  |  | 0 | 4,641
Allowance for equity funds used during construction | 0 | 0 | 0 | 0
Other |  |  | 0 | 0
Changes in assets and liabilities |  |  |  |
Increase in accounts receivable |  |  | 1,664 | 1,066
Decrease (increase) in accrued unbilled revenues |  |  | 0 | 0
Decrease (increase) in fuel oil stock |  |  | 0 | 0
Decrease (increase) in materials and supplies |  |  | 0 | 0
Increase in regulatory assets |  |  | 0 | 0
Increase (decrease) in accounts payable |  |  | 0 | 0
Change in prepaid and accrued income taxes, tax credits and revenue taxes |  |  | (331) | (5,081)
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability |  |  | 0 | 0
Change in other assets and liabilities |  |  | (1,664) | (1,066)
Net cash provided by operating activities |  |  | (20,812) | (21,021)
Cash flows from investing activities |  |  |  |
Capital expenditures |  |  | 0 | 0
Contributions in aid of construction |  |  | 0 | 0
Other |  |  | 331 | 440
Advances (to) from affiliates |  |  | (10,000) | (2,900)
Net cash used in investing activities |  |  | (9,669) | (2,460)
Cash flows from financing activities |  |  |  |
Common stock dividends |  |  | 20,481 | 20,581
Preferred stock dividends of Hawaiian Electric and subsidiaries |  |  | 0 | 0
Proceeds from issuance of long-term debt |  |  | 0 |
Proceeds from issuance of special purpose revenue bonds |  |  |  |
Funds transferred for redemption of special purpose revenue bonds |  |  |  | 0
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less |  |  | 10,000 | 2,900
Other |  |  | 0 | 0
Net cash provided by financing activities |  |  | 30,481 | 23,481
Net decrease in cash and cash equivalents |  |  | 0 | 0
Cash and cash equivalents, beginning of period |  |  | 0 | 0
Cash and cash equivalents, end of period | 0 | 0 | 0 | 0
Hawaiian Electric (parent only) | Reportable Legal Entities |  |  |  |
Cash flows from operating activities |  |  |  |
Net income | 49,982 | 47,757 | 109,166 | 95,406
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Equity in earnings of subsidiaries |  |  | (35,116) | (29,381)
Common stock dividends received from subsidiaries |  |  | 20,531 | 20,656
Depreciation of property, plant and equipment |  |  | 103,112 | 98,167
Other amortization |  |  | 15,159 | 2,168
Deferred income taxes |  |  | 7,182 | 12,166
Allowance for equity funds used during construction | (1,648) | (3,108) | (7,123) | (7,823)
Other |  |  | (1,227) | 216
Changes in assets and liabilities |  |  |  |
Increase in accounts receivable |  |  | (41,566) | (6,114)
Decrease (increase) in accrued unbilled revenues |  |  | (17,780) | (14,823)
Decrease (increase) in fuel oil stock |  |  | 3,862 | 6,779
Decrease (increase) in materials and supplies |  |  | (4,082) | 1,063
Increase in regulatory assets |  |  | (1,704) | 9,471
Increase (decrease) in accounts payable |  |  | (10,541) | 7,010
Change in prepaid and accrued income taxes, tax credits and revenue taxes |  |  | (20,949) | 10,920
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability |  |  | 6,018 | 532
Change in other assets and liabilities |  |  | 34,934 | (2,709)
Net cash provided by operating activities |  |  | 159,876 | 203,704
Cash flows from investing activities |  |  |  |
Capital expenditures |  |  | (245,393) | (236,727)
Contributions in aid of construction |  |  | 19,486 | 34,787
Other |  |  | 4,518 | 6,089
Advances (to) from affiliates |  |  | (2,000) | 0
Net cash used in investing activities |  |  | (223,389) | (195,851)
Cash flows from financing activities |  |  |  |
Common stock dividends |  |  | (77,479) | (65,825)
Preferred stock dividends of Hawaiian Electric and subsidiaries |  |  | (810) | (810)
Proceeds from issuance of long-term debt |  |  | 75,000 |
Proceeds from issuance of special purpose revenue bonds |  |  |  | 162,000
Funds transferred for redemption of special purpose revenue bonds |  |  |  | (162,000)
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less |  |  | 68,914 | 3,100
Other |  |  | (304) | (2,252)
Net cash provided by financing activities |  |  | 65,321 | (65,787)
Net decrease in cash and cash equivalents |  |  | 1,808 | (57,934)
Cash and cash equivalents, beginning of period |  |  | 2,059 | 61,388
Cash and cash equivalents, end of period | 3,867 | 3,454 | 3,867 | 3,454
HELCO | Reportable Legal Entities |  |  |  |
Cash flows from operating activities |  |  |  |
Net income | 9,308 | 6,567 | 19,439 | 15,050
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Equity in earnings of subsidiaries |  |  | 0 | 0
Common stock dividends received from subsidiaries |  |  | 0 | 0
Depreciation of property, plant and equipment |  |  | 30,165 | 29,056
Other amortization |  |  | 3,992 | 1,718
Deferred income taxes |  |  | 1,195 | 5,237
Allowance for equity funds used during construction | (39) | (167) | (274) | (416)
Other |  |  | (315) | 566
Changes in assets and liabilities |  |  |  |
Increase in accounts receivable |  |  | (6,738) | (1,127)
Decrease (increase) in accrued unbilled revenues |  |  | 130 | (1,581)
Decrease (increase) in fuel oil stock |  |  | (2,785) | 195
Decrease (increase) in materials and supplies |  |  | 201 | (1,580)
Increase in regulatory assets |  |  | (2,245) | (2,935)
Increase (decrease) in accounts payable |  |  | 234 | (2,660)
Change in prepaid and accrued income taxes, tax credits and revenue taxes |  |  | (9,828) | (758)
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability |  |  | (570) | 39
Change in other assets and liabilities |  |  | 2,602 | 1,059
Net cash provided by operating activities |  |  | 35,203 | 41,863
Cash flows from investing activities |  |  |  |
Capital expenditures |  |  | (43,417) | (36,700)
Contributions in aid of construction |  |  | 2,960 | 3,460
Other |  |  | 1,177 | 871
Advances (to) from affiliates |  |  | 0 | (3,100)
Net cash used in investing activities |  |  | (39,280) | (35,469)
Cash flows from financing activities |  |  |  |
Common stock dividends |  |  | (11,467) | (11,622)
Preferred stock dividends of Hawaiian Electric and subsidiaries |  |  | (400) | (400)
Proceeds from issuance of long-term debt |  |  | 15,000 |
Proceeds from issuance of special purpose revenue bonds |  |  |  | 28,000
Funds transferred for redemption of special purpose revenue bonds |  |  |  | (28,000)
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less |  |  | 0 | 0
Other |  |  | (54) | (407)
Net cash provided by financing activities |  |  | 3,079 | (12,429)
Net decrease in cash and cash equivalents |  |  | (998) | (6,035)
Cash and cash equivalents, beginning of period |  |  | 4,025 | 10,749
Cash and cash equivalents, end of period | 3,027 | 4,714 | 3,027 | 4,714
Maui Electric | Reportable Legal Entities |  |  |  |
Cash flows from operating activities |  |  |  |
Net income | 7,556 | 6,428 | 16,288 | 14,942
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Equity in earnings of subsidiaries |  |  | 0 | 0
Common stock dividends received from subsidiaries |  |  | 0 | 0
Depreciation of property, plant and equipment |  |  | 18,533 | 17,355
Other amortization |  |  | 672 | 2,232
Deferred income taxes |  |  | 4,458 | 7,493
Allowance for equity funds used during construction | (275) | (207) | (842) | (669)
Other |  |  | (410) | (256)
Changes in assets and liabilities |  |  |  |
Increase in accounts receivable |  |  | (6,499) | (1,912)
Decrease (increase) in accrued unbilled revenues |  |  | (2,998) | (1,610)
Decrease (increase) in fuel oil stock |  |  | (6,026) | (797)
Decrease (increase) in materials and supplies |  |  | (229) | (1,763)
Increase in regulatory assets |  |  | (2,525) | (2,614)
Increase (decrease) in accounts payable |  |  | 1,595 | 1,780
Change in prepaid and accrued income taxes, tax credits and revenue taxes |  |  | (6,029) | 210
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability |  |  | 440 | (118)
Change in other assets and liabilities |  |  | 3,027 | 54
Net cash provided by operating activities |  |  | 19,455 | 34,327
Cash flows from investing activities |  |  |  |
Capital expenditures |  |  | (45,920) | (33,548)
Contributions in aid of construction |  |  | 1,915 | 2,356
Other |  |  | 3,785 | 714
Advances (to) from affiliates |  |  | 12,000 | 6,000
Net cash used in investing activities |  |  | (28,220) | (24,478)
Cash flows from financing activities |  |  |  |
Common stock dividends |  |  | (9,014) | (8,959)
Preferred stock dividends of Hawaiian Electric and subsidiaries |  |  | (286) | (286)
Proceeds from issuance of long-term debt |  |  | 10,000 |
Proceeds from issuance of special purpose revenue bonds |  |  |  | 75,000
Funds transferred for redemption of special purpose revenue bonds |  |  |  | (75,000)
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less |  |  | 2,000 | 0
Other |  |  | (38) | (934)
Net cash provided by financing activities |  |  | 2,662 | (10,179)
Net decrease in cash and cash equivalents |  |  | (6,103) | (330)
Cash and cash equivalents, beginning of period |  |  | 6,332 | 2,048
Cash and cash equivalents, end of period | 229 | 1,718 | 229 | 1,718
Other subsidiaries | Reportable Legal Entities |  |  |  |
Cash flows from operating activities |  |  |  |
Net income | 0 | 0 | 0 | 0
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Equity in earnings of subsidiaries |  |  | 0 | 0
Common stock dividends received from subsidiaries |  |  | 0 | 0
Depreciation of property, plant and equipment |  |  | 0 | 0
Other amortization |  |  | 0 | 0
Deferred income taxes |  |  | 0 | 0
Allowance for equity funds used during construction | 0 | 0 | 0 | 0
Other |  |  | 0 | 0
Changes in assets and liabilities |  |  |  |
Increase in accounts receivable |  |  | 0 | 0
Decrease (increase) in accrued unbilled revenues |  |  | 0 | 0
Decrease (increase) in fuel oil stock |  |  | 0 | 0
Decrease (increase) in materials and supplies |  |  | 0 | 0
Increase in regulatory assets |  |  | 0 | 0
Increase (decrease) in accounts payable |  |  | 0 | 0
Change in prepaid and accrued income taxes, tax credits and revenue taxes |  |  | 0 | 0
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability |  |  | 0 | 0
Change in other assets and liabilities |  |  | 0 | 0
Net cash provided by operating activities |  |  | 0 | 0
Cash flows from investing activities |  |  |  |
Capital expenditures |  |  | 0 | 0
Contributions in aid of construction |  |  | 0 | 0
Other |  |  | 0 | 0
Advances (to) from affiliates |  |  | 0 | 0
Net cash used in investing activities |  |  | 0 | 0
Cash flows from financing activities |  |  |  |
Common stock dividends |  |  | 0 | 0
Preferred stock dividends of Hawaiian Electric and subsidiaries |  |  | 0 | 0
Proceeds from issuance of long-term debt |  |  | 0 |
Proceeds from issuance of special purpose revenue bonds |  |  |  | 0
Funds transferred for redemption of special purpose revenue bonds |  |  |  | 0
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less |  |  | 0 | 0
Other |  |  | 0 | 0
Net cash provided by financing activities |  |  | 0 | 0
Net decrease in cash and cash equivalents |  |  | 0 | 0
Cash and cash equivalents, beginning of period |  |  | 101 | 101
Cash and cash equivalents, end of period | 101 | 101 | 101 | 101
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |
Cash flows from operating activities |  |  |  |
Net income | 50,210 | 47,985 | 109,852 | 96,092
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Equity in earnings of subsidiaries |  |  | (75) | (75)
Common stock dividends received from subsidiaries |  |  | 50 | 75
Depreciation of property, plant and equipment |  |  | 151,810 | 144,578
Other amortization |  |  | 19,823 | 6,118
Deferred income taxes |  |  | 12,835 | 29,537
Allowance for equity funds used during construction | (1,962) | (3,482) | (8,239) | (8,908)
Other |  |  | (1,952) | 526
Changes in assets and liabilities |  |  |  |
Increase in accounts receivable |  |  | (53,139) | (8,087)
Decrease (increase) in accrued unbilled revenues |  |  | (20,648) | (18,014)
Decrease (increase) in fuel oil stock |  |  | (4,949) | 6,177
Decrease (increase) in materials and supplies |  |  | (4,110) | (2,280)
Increase in regulatory assets |  |  | (6,474) | 3,922
Increase (decrease) in accounts payable |  |  | (8,712) | 6,130
Change in prepaid and accrued income taxes, tax credits and revenue taxes |  |  | (37,137) | 5,291
Increase (decrease) in defined benefit pension and other postretirement benefit plans liability |  |  | 5,888 | 453
Change in other assets and liabilities |  |  | 38,899 | (2,662)
Net cash provided by operating activities |  |  | 193,722 | 258,873
Cash flows from investing activities |  |  |  |
Capital expenditures |  |  | (334,730) | (306,975)
Contributions in aid of construction |  |  | 24,361 | 40,603
Other |  |  | 9,811 | 8,114
Advances (to) from affiliates |  |  | 0 | 0
Net cash used in investing activities |  |  | (300,558) | (258,258)
Cash flows from financing activities |  |  |  |
Common stock dividends |  |  | (77,479) | (65,825)
Preferred stock dividends of Hawaiian Electric and subsidiaries |  |  | (1,496) | (1,496)
Proceeds from issuance of long-term debt |  |  | 100,000 | 265,000
Proceeds from issuance of special purpose revenue bonds |  |  |  | 265,000
Funds transferred for redemption of special purpose revenue bonds |  |  | 0 | (265,000)
Net increase in short-term borrowings from non-affiliates and affiliate with original maturities of three months or less |  |  | 80,914 | 6,000
Other |  |  | (396) | (3,593)
Net cash provided by financing activities |  |  | 101,543 | (64,914)
Net decrease in cash and cash equivalents |  |  | (5,293) | (64,299)
Cash and cash equivalents, beginning of period |  |  | 12,517 | 74,286
Cash and cash equivalents, end of period | $ 7,224 | $ 9,987 | $ 7,224 | $ 9,987

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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3521-108585 + Details
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