XML 189 R174.htm IDEA: XBRL DOCUMENT
v3.6.0.2

SUPPLEMENTAL FINANCIAL INFORMATION (Condensed Consolidated Statements of Income) (Details) - CAD CAD in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Revenues [Abstract] |  |
Regulated electric | CAD 3,437.0 | CAD 2,141.0
Regulated | 499.0 | 52.0
Non-regulated | 341.0 | 596.0
Total operating revenues | 4,277.0 | 2,789.0
Operating expenses |  |
Regulated fuel for generation and purchased power | 1,222.0 | 815.0
Regulated cost of natural gas | 177.0 | 0.0
Regulated fuel adjustment | 61.0 | 42.0
Non-regulated fuel for generation and purchased power | 313.0 | 336.0
Non-regulated direct costs | 29.0 | 19.0
Operating, maintenance and general | 1,137.0 | 666.0
Provincial, state, and municipal taxes | 195.0 | 63.0
Depreciation and amortization | 588.0 | 340.0
Total operating expenses | 3,722.0 | 2,281.0
Operating Income (Loss) | 555.0 | 508.0
Income from equity investments | 100.0 | 108.0
Other income (expenses), net | 174.0 | 141.0
Interest expense, net | (585.0) | (212.0)
Income before provision for income taxes | 244.0 | 545.0
Income tax expense (recovery) | (22.0) | 93.0
Net income | 266.0 | 452.0
Non-controlling interest in subsidiaries | 11.0 | 25.0
Net income of Emera Incorporated | 255.0 | 427.0
Preferred stock dividends | 28.0 | 30.0
Net income attributable to common shareholders | 227.2 | 397.2
Comprehensive income attributable to common shareholders | 228.0 | 911.0
Consolidation, Eliminations [Member] |  |
Revenues [Abstract] |  |
Regulated electric | (2.0) | (2.0)
Regulated | 0.0 | 0.0
Non-regulated | (33.0) | (42.0)
Total operating revenues | (35.0) | (44.0)
Operating expenses |  |
Regulated fuel for generation and purchased power | 0.0 | 0.0
Regulated cost of natural gas | 0.0 | 0.0
Regulated fuel adjustment | 0.0 | 0.0
Non-regulated fuel for generation and purchased power | (4.0) | (5.0)
Non-regulated direct costs | (23.0) | (30.0)
Operating, maintenance and general | (8.0) | (8.0)
Provincial, state, and municipal taxes | 0.0 | 0.0
Depreciation and amortization | 0.0 | 0.0
Total operating expenses | (35.0) | (43.0)
Operating Income (Loss) | 0.0 | (1.0)
Income (Loss) from Subsidiaries, before Tax | (150.0) | (270.0)
Income from equity investments | 0.0 | 0.0
Intercompany income (expenses), net | (46.0) | (164.0)
Other income (expenses), net | 0.0 | 0.0
Interest expense, net | 0.0 | (134.0)
Income before provision for income taxes | (196.0) | (301.0)
Income tax expense (recovery) | 0.0 | 0.0
Net income | (196.0) | (301.0)
Non-controlling interest in subsidiaries | 4.0 | 12.0
Net income of Emera Incorporated | (200.0) | (313.0)
Preferred stock dividends | (50.0) | (41.0)
Net income attributable to common shareholders | (150.0) | (272.0)
Comprehensive income attributable to common shareholders | (283.0) | (755.0)
Parent Company [Member] |  |
Revenues [Abstract] |  |
Regulated electric | 0.0 | 0.0
Regulated | 0.0 | 0.0
Non-regulated | 0.0 | 0.0
Total operating revenues | 0.0 | 0.0
Operating expenses |  |
Regulated fuel for generation and purchased power | 0.0 | 0.0
Regulated cost of natural gas | 0.0 | 0.0
Regulated fuel adjustment | 0.0 | 0.0
Non-regulated fuel for generation and purchased power | 0.0 | 0.0
Non-regulated direct costs | 0.0 | 0.0
Operating, maintenance and general | 37.0 | 54.0
Provincial, state, and municipal taxes | 0.0 | 0.0
Depreciation and amortization | 2.0 | 1.0
Total operating expenses | 39.0 | 55.0
Operating Income (Loss) | (39.0) | (55.0)
Income (Loss) from Subsidiaries, before Tax | 150.0 | 270.0
Income from equity investments | 18.0 | 37.0
Intercompany income (expenses), net | 203.0 | 156.0
Other income (expenses), net | 135.0 | 91.0
Interest expense, net | 226.0 | 46.0
Income before provision for income taxes | 241.0 | 453.0
Income tax expense (recovery) | (14.0) | 25.0
Net income | 255.0 | 428.0
Non-controlling interest in subsidiaries | 0.0 | 0.0
Net income of Emera Incorporated | 255.0 | 428.0
Preferred stock dividends | 28.0 | 30.0
Net income attributable to common shareholders | 227.0 | 398.0
Comprehensive income attributable to common shareholders | 228.0 | 911.0
Subsidiary Issuer [Member] |  |
Revenues [Abstract] |  |
Regulated electric | 0.0 | 0.0
Regulated | 0.0 | 0.0
Non-regulated | 0.0 | 0.0
Total operating revenues | 0.0 | 0.0
Operating expenses |  |
Regulated fuel for generation and purchased power | 0.0 | 0.0
Regulated cost of natural gas | 0.0 | 0.0
Regulated fuel adjustment | 0.0 | 0.0
Non-regulated fuel for generation and purchased power | 0.0 | 0.0
Non-regulated direct costs | 0.0 | 0.0
Operating, maintenance and general | 0.0 | 0.0
Provincial, state, and municipal taxes | 0.0 | 0.0
Depreciation and amortization | 0.0 | 0.0
Total operating expenses | 0.0 | 0.0
Operating Income (Loss) | 0.0 | 0.0
Income (Loss) from Subsidiaries, before Tax | 0.0 | 0.0
Income from equity investments | 0.0 | 0.0
Intercompany income (expenses), net | 101.0 | 0.0
Other income (expenses), net | 0.0 | 0.0
Interest expense, net | 85.0 | 0.0
Income before provision for income taxes | 16.0 | 0.0
Income tax expense (recovery) | 7.0 | 0.0
Net income | 9.0 | 0.0
Non-controlling interest in subsidiaries | 0.0 | 0.0
Net income of Emera Incorporated | 9.0 | 0.0
Preferred stock dividends | 0.0 | 0.0
Net income attributable to common shareholders | 9.0 | 0.0
Comprehensive income attributable to common shareholders | 19.0 | 0.0
Guarantor Subsidiaries [Member] |  |
Revenues [Abstract] |  |
Regulated electric | 1,665.0 | 283.0
Regulated | 451.0 | 0.0
Non-regulated | 378.0 | 419.0
Total operating revenues | 2,494.0 | 702.0
Operating expenses |  |
Regulated fuel for generation and purchased power | 560.0 | 70.0
Regulated cost of natural gas | 177.0 | 0.0
Regulated fuel adjustment | 0.0 | 0.0
Non-regulated fuel for generation and purchased power | 261.0 | 277.0
Non-regulated direct costs | 0.0 | 0.0
Operating, maintenance and general | 647.0 | 148.0
Provincial, state, and municipal taxes | 152.0 | 21.0
Depreciation and amortization | 330.0 | 79.0
Total operating expenses | 2,127.0 | 595.0
Operating Income (Loss) | 367.0 | 107.0
Income (Loss) from Subsidiaries, before Tax | 0.0 | 0.0
Income from equity investments | 0.0 | 5.0
Intercompany income (expenses), net | (107.0) | 0.0
Other income (expenses), net | 24.0 | 21.0
Interest expense, net | 127.0 | 28.0
Income before provision for income taxes | 157.0 | 105.0
Income tax expense (recovery) | 48.0 | 35.0
Net income | 109.0 | 70.0
Non-controlling interest in subsidiaries | 0.0 | 0.0
Net income of Emera Incorporated | 109.0 | 70.0
Preferred stock dividends | 31.0 | 15.0
Net income attributable to common shareholders | 78.0 | 55.0
Comprehensive income attributable to common shareholders | 205.0 | 303.0
Non-Guarantor Subsidiaries [Member] |  |
Revenues [Abstract] |  |
Regulated electric | 1,774.0 | 1,860.0
Regulated | 48.0 | 52.0
Non-regulated | (4.0) | 219.0
Total operating revenues | 1,818.0 | 2,131.0
Operating expenses |  |
Regulated fuel for generation and purchased power | 662.0 | 745.0
Regulated cost of natural gas | 0.0 | 0.0
Regulated fuel adjustment | 61.0 | 42.0
Non-regulated fuel for generation and purchased power | 56.0 | 64.0
Non-regulated direct costs | 52.0 | 49.0
Operating, maintenance and general | 461.0 | 472.0
Provincial, state, and municipal taxes | 43.0 | 42.0
Depreciation and amortization | 256.0 | 260.0
Total operating expenses | 1,591.0 | 1,674.0
Operating Income (Loss) | 227.0 | 457.0
Income (Loss) from Subsidiaries, before Tax | 0.0 | 0.0
Income from equity investments | 82.0 | 66.0
Intercompany income (expenses), net | (151.0) | 8.0
Other income (expenses), net | 15.0 | 29.0
Interest expense, net | 147.0 | 272.0
Income before provision for income taxes | 26.0 | 288.0
Income tax expense (recovery) | (63.0) | 33.0
Net income | 89.0 | 255.0
Non-controlling interest in subsidiaries | 7.0 | 13.0
Net income of Emera Incorporated | 82.0 | 242.0
Preferred stock dividends | 19.0 | 26.0
Net income attributable to common shareholders | 63.0 | 216.0
Comprehensive income attributable to common shareholders | CAD 59.0 | CAD 452.0

X
- Definition Income (expense from intercompany transactions. + References No definition available. + Details
Name: | ema_IntercompanyIncomeExpensesNet
Namespace Prefix: | ema_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Direct costs that are not regulated. + References No definition available. + Details
Name: | ema_NonRegulatedDirectCosts
Namespace Prefix: | ema_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of fuel, and purchased power charged against earnings for the period related to non-regulated operations. + References No definition available. + Details
Name: | ema_NonRegulatedFuelForGenerationAndPurchasedPower
Namespace Prefix: | ema_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The regulated fuel adjustment related to the fuel adjustment mechanism ("FAM"). + References No definition available. + Details
Name: | ema_RegulatedFuelAdjustment
Namespace Prefix: | ema_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831270 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831223 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=51831255 + Details
Name: | us-gaap_ComprehensiveIncomeNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cost of electricity sold during the reporting period, operations of which is regulated by a federal or state agency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(b)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_CostOfDomesticRegulatedElectric
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cost of generation, transmission, and distribution of [natural] gas, which are regulated by a federal, state, or local government or agency. + References No definition available. + Details
Name: | us-gaap_CostOfDomesticRegulatedGasRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total costs of sales and operating expenses for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_CostsAndExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(10)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(15)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(8)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(12)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(f)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before tax of income (loss) of subsidiary attributable to the parent entity. + References No definition available. + Details
Name: | us-gaap_IncomeLossFromSubsidiariesBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net amount of operating interest income (expense). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.10) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_InterestIncomeExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=51831255 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831270 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591551-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684 + Details
Name: | us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1377-109256 + Details
Name: | us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_NonoperatingIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders. + References No definition available. + Details
Name: | us-gaap_PreferredStockDividendsIncomeStatementImpact
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591551-111686 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684 + Details
Name: | us-gaap_ProfitLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of regulated power revenues recognized during the period. + References No definition available. + Details
Name: | us-gaap_RegulatedOperatingRevenueElectricNonNuclear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of regulated gas operating revenues recognized during the period. + References No definition available. + Details
Name: | us-gaap_RegulatedOperatingRevenueGas
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_TaxesExcludingIncomeAndExciseTaxes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of unregulated operating revenues recognized during the period. + References No definition available. + Details
Name: | us-gaap_UnregulatedOperatingRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of operating expense for depreciation and amortization of regulated operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(b)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of operating expenses for the period that are associated with the utility's normal revenue producing operation; including selling, general, and administrative expenses, costs incurred for routine plant repairs and maintenance, and operations. + References No definition available. + Details
Name: | us-gaap_UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_ConsolidationEliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_SubsidiaryIssuerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_GuarantorSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_NonGuarantorSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |