$BKH
BLACK HILLS CORP /SD/ Stock $bkh

$bkh Overview Financials Valuation SEC Filings Company Website

2016 Q4 Form 10-Q Financial Statement

#000113046416000217 Filed on November 04, 2016

Income Statement

Concept	2016 Q4	2016 Q3	2015 Q3
Revenue	$455.4M	$324.1M	$272.1M
YoY Change	43.09%	19.13%	0.01%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$34.90M	$48.93M	$37.77M
YoY Change	259.79%	29.54%	3.11%
% of Gross Profit
Operating Expenses	$260.8M	$275.4M	$274.1M
YoY Change	5.63%	0.45%	26.42%
Operating Profit	$110.3M	$70.84M	-$2.044M
YoY Change	55905.08%	-3565.95%	-103.7%
Interest Expense	-$36.10M	-$35.30M	-$21.20M
YoY Change	54.94%	66.51%	26.19%
% of Operating Profit	-32.72%	-49.83%
Other Income/Expense, Net	$700.0K	-$33.88M	$842.0K
YoY Change	16.67%	-4123.87%	222.61%
Pretax Income	$133.5M	$24.53M	-$21.98M
YoY Change	-715.21%	-211.6%	-156.35%
Income Tax	$47.90M	$6.644M	-$12.04M
% Of Pretax Income	35.88%	27.09%
Net Earnings	$18.20M	$17.88M	-$9.943M
YoY Change	-228.17%	-279.87%	-136.29%
Net Earnings / Revenue	4.0%	5.52%	-3.65%
Basic Earnings Per Share	$0.34	$0.27	-$0.22
Diluted Earnings Per Share	$0.33	$0.26	-$0.22
COMMON SHARES
Basic Shares Outstanding	53.15M shares	52.18M shares	44.64M shares
Diluted Shares Outstanding		53.73M shares	44.64M shares

Balance Sheet

Concept	2016 Q4	2016 Q3	2015 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$13.50M	$63.00M	$38.80M
YoY Change	-96.94%	62.37%	226.05%
Cash & Equivalents	$13.52M	$31.81M	$38.84M
Short-Term Investments
Other Short-Term Assets	$23.93M	$30.03M	$55.38M
YoY Change	-66.66%	-45.77%	108.98%
Inventory	$103.6M	$113.5M	$90.35M
Prepaid Expenses
Receivables	$259.3M	$154.6M	$115.5M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$466.8M	$387.0M	$402.3M
YoY Change	-42.12%	-3.79%	7.58%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.386B	$4.465B	$3.265B
YoY Change	34.58%	36.77%	4.62%
Goodwill	$1.299B	$1.300B	$359.5M
YoY Change	261.2%	261.69%	1.73%
Intangibles	$8.392M	$8.944M	$3.440M
YoY Change	148.28%	160.0%	6.47%
Long-Term Investments	$12.60M	$12.40M	$12.10M
YoY Change	5.0%	2.48%	-29.24%
Other Assets	$11.51M	$12.80M	$7.501M
YoY Change	55.89%	70.64%	-74.94%
Total Long-Term Assets	$1.567B	$1.557B	$552.8M
YoY Change	185.4%	181.57%	4.9%
TOTAL ASSETS
Total Short-Term Assets	$466.8M	$387.0M	$402.3M
Total Long-Term Assets	$1.567B	$1.557B	$552.8M
Total Assets	$6.542B	$6.421B	$4.232B
YoY Change	41.39%	51.73%	4.79%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$152.1M	$110.6M	$91.63M
YoY Change	69.42%	20.73%	-8.77%
Accrued Expenses	$235.5M	$228.5M	$229.9M
YoY Change	1.5%	-0.59%	40.71%
Deferred Revenue
YoY Change
Short-Term Debt	$96.60M	$75.00M	$117.9M
YoY Change	25.78%	-36.39%	-35.92%
Long-Term Debt Due	$5.743M	$5.743M	$0.00
YoY Change			-100.0%
Total Short-Term Liabilities	$527.9M	$449.7M	$448.7M
YoY Change	29.92%	0.22%	-38.29%
LONG-TERM LIABILITIES
Long-Term Debt	$3.211B	$3.212B	$1.553B
YoY Change	73.23%	106.79%	40.24%
Other Long-Term Liabilities	$115.9M	$141.0M	$136.5M
YoY Change	-25.41%	3.33%	-5.29%
Total Long-Term Liabilities	$1.068B	$1.033B	$942.9M
YoY Change	18.59%	9.59%	8.47%
TOTAL LIABILITIES
Total Short-Term Liabilities	$527.9M	$449.7M	$448.7M
Total Long-Term Liabilities	$1.068B	$1.033B	$942.9M
Total Liabilities	$1.596B	$1.483B	$1.392B
YoY Change	22.11%	6.57%	-12.83%
SHAREHOLDERS EQUITY
Retained Earnings	$457.9M	$462.1M	$504.9M
YoY Change	-3.09%	-8.47%	-9.87%
Common Stock	$53.40M	$53.13M	$44.89M
YoY Change	4.23%	18.35%	-94.33%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$791.0K	$1.155M	$1.789M
YoY Change	-58.1%	-35.44%	-2.82%
Treasury Stock Shares	15.26K shares	18.90K shares	36.71K shares
Shareholders Equity	$1.615B	$1.605B	$1.287B
YoY Change
Total Liabilities & Shareholders Equity	$6.542B	$6.421B	$4.232B
YoY Change	41.39%	51.73%	4.79%

Cashflow Statement

Concept	2016 Q4	2016 Q3	2015 Q3
OPERATING ACTIVITIES
Net Income	$18.20M	$17.88M	-$9.943M
YoY Change	-228.17%	-279.87%	-136.29%
Depreciation, Depletion And Amortization	$34.90M	$48.93M	$37.77M
YoY Change	259.79%	29.54%	3.11%
Cash From Operating Activities	$111.3M	-$13.60M	$111.5M
YoY Change	90.26%	-112.2%	70.49%
INVESTING ACTIVITIES
Capital Expenditures	-$120.9M	-$134.2M	-$143.0M
YoY Change	-245.49%	-6.15%	26.55%
Acquisitions
YoY Change
Other Investing Activities	-$8.700M	-$200.0K	-$6.500M
YoY Change	-95.71%	-96.92%	-128.26%
Cash From Investing Activities	-$129.5M	-$134.5M	-$149.6M
YoY Change	8.19%	-10.09%	66.22%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	100.0K	78.70M	-10.30M
YoY Change	-99.98%	-864.08%	-146.82%
NET CHANGE
Cash From Operating Activities	111.3M	-13.60M	111.5M
Cash From Investing Activities	-129.5M	-134.5M	-149.6M
Cash From Financing Activities	100.0K	78.70M	-10.30M
Net Change In Cash	-18.10M	-69.40M	-48.40M
YoY Change	-104.37%	43.39%	1761.54%
FREE CASH FLOW
Cash From Operating Activities	$111.3M	-$13.60M	$111.5M
Capital Expenditures	-$120.9M	-$134.2M	-$143.0M
Free Cash Flow	$232.2M	$120.6M	$254.5M
YoY Change	-1043.9%	-52.61%	42.66%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	bkh	Asset Retirement Obligation Liabilities Acquired AssetRetirementObligationLiabilitiesAcquired	22412000	USD
CY2016Q1	bkh	At The Market Equity Offering Program Authorized Aggregate Value AtTheMarketEquityOfferingProgramAuthorizedAggregateValue	200000000	USD
	bkh	Business Acquisition Pro Forma Combined Federaland Stateincome Tax Rate BusinessAcquisitionProFormaCombinedFederalandStateincomeTaxRate	0.37
	bkh	Business Combination Consideration Transferred Netof Long Term Debtand Cash Acquired BusinessCombinationConsiderationTransferredNetofLongTermDebtandCashAcquired	0	USD
	bkh	Business Combination Consideration Transferred Netof Long Term Debtand Cash Acquired BusinessCombinationConsiderationTransferredNetofLongTermDebtandCashAcquired	1124238000	USD
	bkh	Business Combination Consideration Transferred Netof Long Term Debtand Cash Acquired Before Working Capital Adjustment BusinessCombinationConsiderationTransferredNetofLongTermDebtandCashAcquiredBeforeWorkingCapitalAdjustment	1135000000	USD
CY2016Q1	bkh	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Working Capital Adjustment To Goodwill BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapitalAdjustmentToGoodwill	5800000	USD
CY2015Q3	bkh	Capitalized Interest CapitalizedInterest	280000	USD
	bkh	Capitalized Interest CapitalizedInterest	1037000	USD
CY2016Q3	bkh	Capitalized Interest CapitalizedInterest	282000	USD
	bkh	Capitalized Interest CapitalizedInterest	785000	USD
CY2016Q2	bkh	Early Termination Settlement Of Gas Supply Contract EarlyTerminationSettlementOfGasSupplyContract	40000000	USD
CY2016Q2	bkh	Early Termination Settlement Of Gas Supply Contract Percentage Of Contract Committed To Distribution Customers EarlyTerminationSettlementOfGasSupplyContractPercentageOfContractCommittedToDistributionCustomers	0.75
CY2016Q2	bkh	Early Termination Settlement Of Gas Supply Contract Percentage Of Contract Not Subjectto Regulatory Recovery EarlyTerminationSettlementOfGasSupplyContractPercentageOfContractNotSubjecttoRegulatoryRecovery	0.25
CY2015Q3	bkh	Effective Income Tax Rate Reconciliation Allowance For Other Funds Used During Construction Equity EffectiveIncomeTaxRateReconciliationAllowanceForOtherFundsUsedDuringConstructionEquity	0.000
CY2016Q3	bkh	Effective Income Tax Rate Reconciliation Allowance For Other Funds Used During Construction Equity EffectiveIncomeTaxRateReconciliationAllowanceForOtherFundsUsedDuringConstructionEquity	-0.006
CY2015Q3	bkh	Effective Income Tax Rate Reconciliation Flow Through Accounting EffectiveIncomeTaxRateReconciliationFlowThroughAccounting	0.024
	bkh	Effective Income Tax Rate Reconciliation Flow Through Accounting EffectiveIncomeTaxRateReconciliationFlowThroughAccounting	0.047
CY2016Q3	bkh	Effective Income Tax Rate Reconciliation Flow Through Accounting EffectiveIncomeTaxRateReconciliationFlowThroughAccounting	-0.022
	bkh	Effective Income Tax Rate Reconciliation Flow Through Accounting EffectiveIncomeTaxRateReconciliationFlowThroughAccounting	-0.019
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	bkh	Effective Income Tax Rate Reconciliation Interperiod Tax Allocation Percent EffectiveIncomeTaxRateReconciliationInterperiodTaxAllocationPercent	0.000
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	0	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	2868000	USD
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	bkh	Effective Income Tax Rate Reconciliation Interperiod Tax Allocation Percent EffectiveIncomeTaxRateReconciliationInterperiodTaxAllocationPercent	0.001
	bkh	Equity Method Investment Otherthan Temporary Impairment Netof Income Taxes EquityMethodInvestmentOtherthanTemporaryImpairmentNetofIncomeTaxes	3400000	USD
CY2015Q3	bkh	Fuel Purchased Power And Cost Of Gas Sold FuelPurchasedPowerAndCostOfGasSold	71627000	USD
	bkh	Fuel Purchased Power And Cost Of Gas Sold FuelPurchasedPowerAndCostOfGasSold	350778000	USD
CY2016Q3	bkh	Fuel Purchased Power And Cost Of Gas Sold FuelPurchasedPowerAndCostOfGasSold	80194000	USD
	bkh	Fuel Purchased Power And Cost Of Gas Sold FuelPurchasedPowerAndCostOfGasSold	336539000	USD
CY2016Q3	bkh	Income Tax Examination Increase Decrease In Accrued Interest IncomeTaxExaminationIncreaseDecreaseInAccruedInterest	5100000	USD
	bkh	Net Income Loss Including Portion Attributableto Noncontrolling Interest Excluding Income Loss Attributableto Redeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestExcludingIncomeLossAttributabletoRedeemableNoncontrollingInterest	-17935000	USD
	bkh	Net Income Loss Including Portion Attributableto Noncontrolling Interest Excluding Income Loss Attributableto Redeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributabletoNoncontrollingInterestExcludingIncomeLossAttributabletoRedeemableNoncontrollingInterest	61204000	USD
	bkh	Non Cash Revision To Capitalized Asset Retirement Costs NonCashRevisionToCapitalizedAssetRetirementCosts	0	USD
	bkh	Non Cash Revision To Capitalized Asset Retirement Costs NonCashRevisionToCapitalizedAssetRetirementCosts	2285000	USD
CY2015Q3	bkh	Operating Costs Nonregulated Energy Operations OperatingCostsNonregulatedEnergyOperations	0	USD
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CY2015Q3	bkh	Operating Expense Maintenance Operationsand Other Costsand Expense OperatingExpenseMaintenanceOperationsandOtherCostsandExpense	89830000	USD
	bkh	Operating Expense Maintenance Operationsand Other Costsand Expense OperatingExpenseMaintenanceOperationsandOtherCostsandExpense	273374000	USD
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	bkh	Operating Expense Maintenance Operationsand Other Costsand Expense OperatingExpenseMaintenanceOperationsandOtherCostsandExpense	334706000	USD
CY2015Q4	bkh	Proceeds From Issuance Of Common Stockand Sale Of Interest In Corporate Units ProceedsFromIssuanceOfCommonStockandSaleOfInterestInCorporateUnits	536000000	USD
CY2015Q3	bkh	Public Utilities Allowance For Funds Used During Construction Borrowed Interest Costs Capitalized PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized	478000	USD
	bkh	Public Utilities Allowance For Funds Used During Construction Borrowed Interest Costs Capitalized PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized	843000	USD
CY2016Q3	bkh	Public Utilities Allowance For Funds Used During Construction Borrowed Interest Costs Capitalized PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized	860000	USD
	bkh	Public Utilities Allowance For Funds Used During Construction Borrowed Interest Costs Capitalized PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized	2115000	USD
CY2015Q3	bkh	Securities Excluded From Diluted Earnings Per Share Due To Net Loss SecuritiesExcludedFromDilutedEarningsPerShareDueToNetLoss	58380000	shares
	bkh	Securities Excluded From Diluted Earnings Per Share Due To Net Loss SecuritiesExcludedFromDilutedEarningsPerShareDueToNetLoss	82130000	shares
CY2015Q3	bkh	Total Other Income Expense TotalOtherIncomeExpense	-19934000	USD
	bkh	Total Other Income Expense TotalOtherIncomeExpense	-56659000	USD
CY2016Q3	bkh	Total Other Income Expense TotalOtherIncomeExpense	-33881000	USD
	bkh	Total Other Income Expense TotalOtherIncomeExpense	-94875000	USD
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2016
	dei	Document Period End Date DocumentPeriodEndDate	2016-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0001130464
CY2016Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	53147805	shares
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	BLACK HILLS CORP /SD/
	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
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CY2016Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	141780000	USD
CY2015Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	115502000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	9124000	USD
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	us-gaap	Accretion Expense AccretionExpense	2321000	USD
CY2015Q3	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	30669000	USD
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CY2015Q3	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	308000	USD
CY2015Q4	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	0	USD
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	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	3074000	USD
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CY2015Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	121000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	114000	shares
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	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	901000	USD
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	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.260
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CY2015Q3	us-gaap	Common Stock Value CommonStockValue	44892000	USD
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CY2015Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-7695000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-17502000	USD
CY2016Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	12944000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	30906000	USD
CY2015Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-7695000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-17502000	USD
CY2016Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	16697000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	37321000	USD
CY2015Q3	us-gaap	Customer Advances And Deposits Current CustomerAdvancesAndDepositsCurrent	33225000	USD
CY2015Q4	us-gaap	Customer Advances And Deposits Current CustomerAdvancesAndDepositsCurrent	53496000	USD
CY2016Q3	us-gaap	Customer Advances And Deposits Current CustomerAdvancesAndDepositsCurrent	51137000	USD
CY2015Q3	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	16604000	USD
CY2015Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	14745000	USD
CY2016Q3	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	5465000	USD
CY2015Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1567797000	USD
CY2015Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1866866000	USD
CY2016Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3240037000	USD
CY2015Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	14630000	USD
CY2015Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	13184000	USD
CY2016Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	22526000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-20808000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	38578000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	47783000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	0	USD
CY2016Q3	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	0	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	494834000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	450579000	USD
CY2016Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	533865000	USD
CY2015Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	37768000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	116821000	USD
CY2016Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	48925000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	140637000	USD
CY2015Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	0	USD
CY2015Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	0	USD
CY2016Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	4382000	USD
CY2015Q3	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	0	USD
CY2015Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	3441000	USD
CY2016Q3	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	183000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	1000000	USD
	us-gaap	Derivative Instruments Loss Reclassified From Accumulated Oci Into Income Effective Portion DerivativeInstrumentsLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortion	28000000	USD
CY2015Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	3312000	USD
CY2015Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	2835000	USD
CY2016Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	1941000	USD
CY2015Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	722000	USD
CY2015Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	156000	USD
CY2016Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	317000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	54450000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	65247000	USD
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.22
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.40
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.27
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.22
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.40
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.04
CY2015Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.548
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.449
CY2016Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.271
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.155
CY2015Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2016Q3	us-gaap	Fair Value Liabilities Level2 To Level1 Transfers Amount FairValueLiabilitiesLevel2ToLevel1TransfersAmount	0	USD
	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	0	USD
CY2015Q3	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.000
	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.000
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.037
	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.025
CY2015Q3	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0.020
	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0.045
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.023
	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.097
	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Restructuring Charges EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringCharges	0.000
	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Restructuring Charges EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringCharges	0.014
CY2015Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.007
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.013
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.009
CY2015Q3	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.047
	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.067
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.040
	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.017
CY2015Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.012
	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.047
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.024
	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.077
CY2015Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	43390000	USD
CY2015Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	43342000	USD
CY2016Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	57203000	USD
CY2015Q3	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	30372000	USD
CY2015Q4	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	25650000	USD
CY2016Q3	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	41936000	USD
CY2015Q3	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	6139000	USD
CY2015Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	5567000	USD
CY2016Q3	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	4282000	USD
CY2015Q3	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	5170000	USD
CY2016Q3	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
CY2015Q3	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
CY2015Q4	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
CY2016Q3	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
CY2015Q3	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2015Q4	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2016Q3	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2015Q3	us-gaap	Fair Value Liabilities Level1 To Level2 Transfers Amount FairValueLiabilitiesLevel1ToLevel2TransfersAmount	0	USD
CY2015Q4	us-gaap	Fair Value Liabilities Level1 To Level2 Transfers Amount FairValueLiabilitiesLevel1ToLevel2TransfersAmount	0	USD
CY2016Q3	us-gaap	Fair Value Liabilities Level1 To Level2 Transfers Amount FairValueLiabilitiesLevel1ToLevel2TransfersAmount	0	USD
CY2015Q3	us-gaap	Fair Value Liabilities Level2 To Level1 Transfers Amount FairValueLiabilitiesLevel2ToLevel1TransfersAmount	0	USD
CY2015Q4	us-gaap	Fair Value Liabilities Level2 To Level1 Transfers Amount FairValueLiabilitiesLevel2ToLevel1TransfersAmount	0	USD
	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	28820000	USD
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2015Q3	us-gaap	Goodwill Goodwill	359527000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	359759000	USD
CY2016Q3	us-gaap	Goodwill Goodwill	1300379000	USD
CY2016Q1	us-gaap	Goodwill Goodwill	940620000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	940620000	USD
CY2015Q3	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	61875000	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	178395000	USD
CY2016Q3	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	12293000	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	52286000	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	183565000	USD
	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	52286000	USD
CY2015Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-21978000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-27061000	USD
CY2016Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	24528000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	72422000	USD
CY2015Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-344000	USD
CY2016Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2016Q3	us-gaap	Income Tax Examination Liability Refund Adjustment From Settlement With Taxing Authority IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority	8000000	USD
CY2015Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12035000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-14640000	USD
CY2016Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6644000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11205000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1202000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1168000	USD
CY2015Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	USD
CY2015Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	368000	USD
CY2016Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	USD
	us-gaap	Increase Decrease In Accounts Receivable And Other Operating Assets IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets	-75966000	USD
	us-gaap	Increase Decrease In Accounts Receivable And Other Operating Assets IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets	-78869000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3618000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5166000	USD
	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-5255000	USD
	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-102155000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	6403000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	5998000	USD
	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-27768000	USD
	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-8453000	USD
	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	2457000	USD
	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	-8181000	USD
CY2015Q3	us-gaap	Incremental Common Shares Attributable To Equity Unit Purchase Agreements IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements	0	shares
	us-gaap	Incremental Common Shares Attributable To Equity Unit Purchase Agreements IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements	0	shares
CY2016Q3	us-gaap	Incremental Common Shares Attributable To Equity Unit Purchase Agreements IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements	1414000	shares
	us-gaap	Incremental Common Shares Attributable To Equity Unit Purchase Agreements IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements	1191000	shares
CY2015Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2016Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	135000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	119000	shares
CY2015Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3440000	USD
CY2015Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3380000	USD
CY2016Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	8944000	USD
CY2015Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	22378000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	61833000	USD
CY2016Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	37306000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	103989000	USD
	us-gaap	Interest Paid Net InterestPaidNet	49797000	USD
	us-gaap	Interest Paid Net InterestPaidNet	82639000	USD
CY2015Q3	us-gaap	Interest Payable Current InterestPayableCurrent	22839000	USD
CY2015Q4	us-gaap	Interest Payable Current InterestPayableCurrent	25762000	USD
CY2016Q3	us-gaap	Interest Payable Current InterestPayableCurrent	42612000	USD
CY2015Q3	us-gaap	Inventory Net InventoryNet	90349000	USD
CY2015Q4	us-gaap	Inventory Net InventoryNet	86943000	USD
CY2016Q3	us-gaap	Inventory Net InventoryNet	113475000	USD
CY2015Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	53838000	USD
CY2015Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	55726000	USD
CY2016Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	67257000	USD
CY2015Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	414000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	1163000	USD
CY2016Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	912000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	2513000	USD
CY2015Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4231932000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4642317000	USD
CY2016Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6452136000	USD
CY2015Q3	us-gaap	Liabilities Current LiabilitiesCurrent	448689000	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	422029000	USD
CY2016Q3	us-gaap	Liabilities Current LiabilitiesCurrent	480820000	USD
CY2015Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	942864000	USD
CY2015Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	900739000	USD
CY2016Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1033318000	USD
CY2015Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2015Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2016Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	5743000	USD
CY2016Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	2370290000	USD
CY2016Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Rolling Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths	5743000	USD
CY2016Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	205742000	USD
CY2016Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	655743000	USD
CY2016Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	5743000	USD
CY2016Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	5743000	USD
CY2016Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	1436000	USD
CY2015Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1553167000	USD
CY2015Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1853682000	USD
CY2016Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3211768000	USD
CY2015Q3	us-gaap	Long Term Investments LongTermInvestments	12148000	USD
CY2015Q4	us-gaap	Long Term Investments LongTermInvestments	11985000	USD
CY2016Q3	us-gaap	Long Term Investments LongTermInvestments	12416000	USD
CY2015Q3	us-gaap	Loss Contingency Accrual Carrying Value Current LossContingencyAccrualCarryingValueCurrent	33375000	USD
CY2015Q4	us-gaap	Loss Contingency Accrual Carrying Value Current LossContingencyAccrualCarryingValueCurrent	38750000	USD
CY2016Q3	us-gaap	Loss Contingency Accrual Carrying Value Current LossContingencyAccrualCarryingValueCurrent	0	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4516000	USD
CY2016Q3	us-gaap	Minority Interest Ownership Percentage By Noncontrolling Owners MinorityInterestOwnershipPercentageByNoncontrollingOwners	0.005
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	8410000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	840948000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-356660000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1459196000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	365873000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	224677000	USD
CY2015Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2016Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3753000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6415000	USD
CY2015Q3	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	0	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	0	USD
CY2016Q3	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	3753000	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	6415000	USD
CY2015Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-9943000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-17935000	USD
CY2016Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	14131000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	54802000	USD
CY2015Q3	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	0	USD
CY2015Q4	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	0	USD
CY2016Q3	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	117382000	USD
	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	177334000	USD
CY2015Q3	us-gaap	Operating Expenses OperatingExpenses	274149000	USD
	us-gaap	Operating Expenses OperatingExpenses	956748000	USD
CY2016Q3	us-gaap	Operating Expenses OperatingExpenses	275377000	USD
	us-gaap	Operating Expenses OperatingExpenses	941889000	USD
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-2044000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	29598000	USD
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	58409000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	167297000	USD
CY2015Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	49787000	USD
CY2015Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	23573000	USD
CY2016Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	34949000	USD
CY2015Q3	us-gaap	Other Assets Current OtherAssetsCurrent	55383000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	71763000	USD
CY2016Q3	us-gaap	Other Assets Current OtherAssetsCurrent	30032000	USD
CY2015Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7501000	USD
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7382000	USD
CY2016Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	12800000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-27000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	0	USD
CY2015Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-16000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	0	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-36000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-108000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-36000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-108000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-19000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-58000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-19000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-58000	USD
CY2015Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	990000	USD
CY2015Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2805000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2248000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	433000	USD
CY2016Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-11770000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-10939000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1187000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-23896000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-247000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-742000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-171000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-516000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	948000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	3450000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	923000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	4137000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	558000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	2548000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	566000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	2450000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-459000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-1374000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-323000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-966000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	2773000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	2644000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-551000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-20617000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	1609000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	1482000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	260000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-10605000	USD
CY2015Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	2374000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3392000	USD
CY2016Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	6748000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	40730000	USD
CY2015Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	136462000	USD
CY2015Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	155369000	USD
CY2016Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	141007000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4013000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	2076000	USD
CY2015Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	842000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1568000	USD
CY2016Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	160000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	801000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	7189000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	860000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	54450000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	65247000	USD
CY2016Q3	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	500000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	1100000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	349471000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	334098000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	4516000	USD
	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	15175000	USD
	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	11830000	USD
CY2015Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	158682000	USD
CY2015Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	146459000	USD
CY2016Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	171633000	USD
	us-gaap	Pension Contributions PensionContributions	10200000	USD
	us-gaap	Pension Contributions PensionContributions	14200000	USD
CY2015Q3	us-gaap	Prior Period Reclassification Adjustment PriorPeriodReclassificationAdjustment	89830000	USD
	us-gaap	Prior Period Reclassification Adjustment PriorPeriodReclassificationAdjustment	273374000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2484000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	107690000	USD
CY2016Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	546000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	300000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1767608000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	287910000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	208100000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	216370000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-7524000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-16285000	USD
CY2015Q3	us-gaap	Profit Loss ProfitLoss	-9943000	USD
	us-gaap	Profit Loss ProfitLoss	-17935000	USD
CY2016Q3	us-gaap	Profit Loss ProfitLoss	17884000	USD
	us-gaap	Profit Loss ProfitLoss	61217000	USD
CY2015Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	4882420000	USD
CY2015Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	117900000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	4976778000	USD
CY2016Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	6306119000	USD
CY2015Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3264697000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3259094000	USD
CY2016Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4465003000	USD
CY2015Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	430000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	563000	USD
CY2016Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	1211000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	2900000	USD
CY2015Q3	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	0	USD
CY2015Q4	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	0	USD
CY2016Q3	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	4206000	USD
CY2016Q3	us-gaap	Refundable Gas Costs RefundableGasCosts	1600000	USD
CY2015Q3	us-gaap	Regulatory Assets RegulatoryAssets	234299000	USD
CY2015Q4	us-gaap	Regulatory Assets RegulatoryAssets	232484000	USD
CY2016Q3	us-gaap	Regulatory Assets RegulatoryAssets	284801000	USD
CY2015Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	51962000	USD
CY2015Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	57359000	USD
CY2016Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	50561000	USD
CY2015Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	182337000	USD
CY2015Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	175125000	USD
CY2016Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	234240000	USD
CY2015Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	157811000	USD
CY2015Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	153041000	USD
CY2016Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	203421000	USD
CY2015Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	5647000	USD
CY2015Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	4865000	USD
CY2016Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	16925000	USD
CY2015Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	152164000	USD
CY2015Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	148176000	USD
CY2016Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	186496000	USD
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	245010000	USD
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	209900000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	275000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1162872000	USD
CY2015Q3	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	2462000	USD
CY2015Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	1697000	USD
CY2016Q3	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	2140000	USD
CY2015Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	504864000	USD
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	472534000	USD
CY2016Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	462090000	USD
CY2015Q3	us-gaap	Sales Revenue Net SalesRevenueNet	272105000	USD
	us-gaap	Sales Revenue Net SalesRevenueNet	986346000	USD
CY2016Q3	us-gaap	Sales Revenue Net SalesRevenueNet	333786000	USD
	us-gaap	Sales Revenue Net SalesRevenueNet	1109186000	USD
CY2015Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	76800000	USD
CY2016Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	75000000	USD
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2298000	USD
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2242000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	105238000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2998000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3822000	USD
CY2015Q3	us-gaap	Stockholders Equity StockholdersEquity	1287212000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	1465867000	USD
CY2016Q3	us-gaap	Stockholders Equity StockholdersEquity	1604642000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1353884000	USD
CY2015Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1287212000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1465867000	USD
CY2016Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1722024000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	16000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	24000	USD
	us-gaap	Subsidiary Or Equity Method Investee Cumulative Percentage Ownership After All Transactions SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions	0.995
CY2015Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	10675000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	33988000	USD
CY2016Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	12114000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	36991000	USD
CY2015Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	36711	shares
CY2015Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	39720	shares
CY2016Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	22368	shares
CY2015Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1789000	USD
CY2015Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1888000	USD
CY2016Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1155000	USD
	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	8851000	USD
	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	7308000	USD
	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	35000000	USD
CY2015Q3	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	0	USD
	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	0	USD
	us-gaap	Variable Interest Entity Ownership Percentage VariableInterestEntityOwnershipPercentage	0.499
CY2015Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	44635000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	44598000	shares
CY2016Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53733000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52893000	shares
CY2015Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	44635000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	44598000	shares
CY2016Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52184000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51583000	shares
	us-gaap	Reclassifications Reclassifications	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The following changes have been made to our Condensed Consolidated Statements of Income (Loss) to reflect combined operations and maintenance expenses, rather than by business group as previously reported, for the </font><font style="font-family:inherit;font-size:10pt;">three</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">nine</font><font style="font-family:inherit;font-size:10pt;"> months ended </font><font style="font-family:inherit;font-size:10pt;">September 30, 2015</font><font style="font-family:inherit;font-size:10pt;">, respectively:</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="20" rowspan="1"></td></tr><tr><td style="width:25%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:10%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:11%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:10%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:10%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:11%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td><td style="width:10%;" rowspan="1" colspan="1"></td><td style="width:1%;" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="9" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">For the Three Months Ended September 30, 2015</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="9" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">For the Nine Months Ended September 30, 2015</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">(in thousands)</font></div></td><td colspan="3" style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">As Previously Reported</font></div></td><td colspan="3" style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Presentation Reclassification</font></div></td><td colspan="3" style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">As Currently Reported</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">As Previously Reported</font></div></td><td colspan="3" style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Presentation Reclassification</font></div></td><td colspan="3" style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">As Currently Reported</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#ceffe7;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Utilities - operations and maintenance</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">67,282</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(67,282</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-right:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">205,630</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(205,630</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-right:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Non-regulated energy operations and maintenance</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">22,548</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(22,548</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">67,744</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(67,744</font></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#ceffe7;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Operations and maintenance</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">89,830</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">89,830</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">273,374</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">273,374</font></div></td><td style="vertical-align:bottom;background-color:#ceffe7;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div></div></div>

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$BKH
BLACK HILLS CORP /SD/ Stock $bkh

2016 Q4 Form 10-Q Financial Statement

#000113046416000217 Filed on November 04, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BKH BLACK HILLS CORP /SD/ Stock $bkh

2016 Q4 Form 10-Q Financial Statement

#000113046416000217 Filed on November 04, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BKH
BLACK HILLS CORP /SD/ Stock $bkh