$SR
Spire Inc Stock $sr

$sr Overview Financials Valuation SEC Filings Company Website

2015 Form 10-K Financial Statement

#000112695615000077 Filed on November 24, 2015

Income Statement

Concept	2015	2014 Q3	2014 Q2
Revenue	$1.976B	$222.3M	$241.8M
YoY Change	21.46%	51.12%	46.28%
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	$130.8M	$24.20M	$18.60M
YoY Change	57.02%	65.75%	57.63%
% of Gross Profit
Operating Expenses	$1.704B	$230.7M	$217.1M
YoY Change	16.62%	55.88%	97.18%
Operating Profit	$272.5M	-$8.400M	$24.70M
YoY Change	63.76%	-13.4%	100.81%
Interest Expense	$74.60M	-$15.00M	$11.40M
YoY Change	61.47%	114.29%	65.22%
% of Operating Profit	27.38%		46.15%
Other Income/Expense, Net	$1.200M	-$2.300M	-$2.400M
YoY Change	-136.36%	43.75%	500.0%
Pretax Income	$199.1M	-$25.70M	$10.90M
YoY Change	70.32%	40.44%	118.0%
Income Tax	$62.20M	-$10.80M	-$800.0K
% Of Pretax Income	31.24%		-7.34%
Net Earnings	$136.9M	-$14.90M	$11.70M
YoY Change	61.82%	55.21%	77.27%
Net Earnings / Revenue	6.93%	-6.7%	4.84%
Basic Earnings Per Share	$3.16	-$0.35	$0.34
Diluted Earnings Per Share	$3.16	-$0.35	$0.33
COMMON SHARES
Basic Shares Outstanding	43.20M shares	43.17M shares	34.90M shares
Diluted Shares Outstanding	43.30M shares		35.00M shares

Balance Sheet

Concept	2015	2014 Q3	2014 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$13.80M	$16.10M	$571.8M
YoY Change	-14.29%	-69.62%	2.75%
Cash & Equivalents	$13.80M	$16.10M	$571.8M
Short-Term Investments
Other Short-Term Assets	$73.00M	$115.6M	$79.80M
YoY Change	-36.85%	243.03%	43.01%
Inventory	$215.4M	$270.2M	$135.6M
Prepaid Expenses
Receivables	$210.6M	$29.40M	$208.0M
Other Receivables	$17.30M	$7.300M	$0.00
Total Short-Term Assets	$530.1M	$628.0M	$995.2M
YoY Change	-15.59%	31.96%	18.28%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.941B	$9.200M	$8.200M
YoY Change	6.22%	19.48%	39.17%
Goodwill		$937.8M	$210.0M
YoY Change		279.52%
Intangibles
YoY Change
Long-Term Investments	$59.90M	$60.00M	$60.40M
YoY Change	-0.17%	2.92%	13.32%
Other Assets	$813.0M	$65.00M	$15.00M
YoY Change	19.68%	367.63%	158.4%
Total Long-Term Assets	$4.760B	$4.446B	$2.662B
YoY Change	7.06%	67.81%	68.38%
TOTAL ASSETS
Total Short-Term Assets	$530.1M	$628.0M	$995.2M
Total Long-Term Assets	$4.760B	$4.446B	$2.662B
Total Assets	$5.290B	$5.074B	$3.657B
YoY Change	4.26%	62.35%	50.98%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$146.5M	$176.7M	$152.0M
YoY Change	-17.09%	26.03%	44.95%
Accrued Expenses	$47.00M	$51.10M	$25.30M
YoY Change	-8.02%	75.6%	46.24%
Deferred Revenue
YoY Change
Short-Term Debt	$338.0M	$287.1M	$0.00
YoY Change	17.73%	287.97%
Long-Term Debt Due	$80.00M	$0.00
YoY Change
Total Short-Term Liabilities	$853.8M	$785.8M	$320.1M
YoY Change	8.65%	122.48%	75.11%
LONG-TERM LIABILITIES
Long-Term Debt	$1.772B	$1.851B	$976.6M
YoY Change	-4.29%	102.8%	110.27%
Other Long-Term Liabilities	$609.2M	$75.10M	$53.20M
YoY Change	11.78%	65.42%	73.24%
Total Long-Term Liabilities	$2.381B	$928.8M	$826.2M
YoY Change	-0.64%	14.22%	19.08%
TOTAL LIABILITIES
Total Short-Term Liabilities	$853.8M	$785.8M	$320.1M
Total Long-Term Liabilities	$2.381B	$928.8M	$826.2M
Total Liabilities	$3.717B	$1.715B	$1.146B
YoY Change	4.23%	47.0%	30.77%
SHAREHOLDERS EQUITY
Retained Earnings		$437.5M	$471.6M
YoY Change		4.14%	6.29%
Common Stock		$43.20M	$43.20M
YoY Change		32.11%	32.21%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.574B	$1.508B	$1.534B
YoY Change
Total Liabilities & Shareholders Equity	$5.290B	$5.074B	$3.657B
YoY Change	4.26%	62.35%	50.98%

Cashflow Statement

Concept	2015	2014 Q3	2014 Q2
OPERATING ACTIVITIES
Net Income	$136.9M	-$14.90M	$11.70M
YoY Change	61.82%	55.21%	77.27%
Depreciation, Depletion And Amortization	$130.8M	$24.20M	$18.60M
YoY Change	57.02%	65.75%	57.63%
Cash From Operating Activities	$322.4M	-$62.40M	$42.20M
YoY Change	162.97%	1912.9%	71.54%
INVESTING ACTIVITIES
Capital Expenditures	$289.8M	-$61.50M	-$41.30M
YoY Change	69.47%	80.88%	21.11%
Acquisitions	$0.00
YoY Change
Other Investing Activities	$700.0K	-$1.304B	$8.000M
YoY Change	-118.92%	33.8%	-1700.0%
Cash From Investing Activities	-$298.7M	-$1.366B	-$33.30M
YoY Change	-79.22%	35.39%	-3.76%
FINANCING ACTIVITIES
Cash Dividend Paid	$79.00M
YoY Change	27.63%
Common Stock Issuance & Retirement, Net	$3.100M		$478.7M
YoY Change	-99.33%
Debt Paid & Issued, Net	$34.80M
YoY Change	-56.5%
Cash From Financing Activities	-$26.00M	872.6M	552.0M
YoY Change	-102.03%	71.6%	31.59%
NET CHANGE
Cash From Operating Activities	$322.4M	-62.40M	42.20M
Cash From Investing Activities	-$298.7M	-1.366B	-33.30M
Cash From Financing Activities	-$26.00M	872.6M	552.0M
Net Change In Cash	-$2.300M	-555.7M	560.9M
YoY Change	-93.77%	10.37%	36.97%
FREE CASH FLOW
Cash From Operating Activities	$322.4M	-$62.40M	$42.20M
Capital Expenditures	$289.8M	-$61.50M	-$41.30M
Free Cash Flow	$32.60M	-$900.0K	$83.50M
YoY Change	-167.36%	-102.91%	42.25%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-09-30
CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0001126956
CY2015Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	43350411	shares
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2015Q1	dei	Entity Public Float EntityPublicFloat	2145801563	USD
CY2015	dei	Entity Registrant Name EntityRegistrantName	LACLEDE GROUP INC
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
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CY2015	lg	Add Acquisition Divestiture And Restructuring Activities AddAcquisitionDivestitureAndRestructuringActivities	6100000	USD
CY2013	lg	Add Lower Of Cost Or Market Inventory Adjustments Net Of Tax AddLowerOfCostOrMarketInventoryAdjustmentsNetOfTax	900000	USD
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CY2015	lg	Anticipated Contributions To Pension Plans Non Qualified Trusts AnticipatedContributionsToPensionPlansNonQualifiedTrusts	500000	USD
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CY2015	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	55200000	USD
CY2014Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	99200000	USD
CY2015Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	159200000	USD
CY2013Q3	us-gaap	Assets Assets	3125400000	USD
CY2014Q3	us-gaap	Assets Assets	5074000000	USD
CY2015Q3	us-gaap	Assets Assets	5290200000	USD
CY2014Q3	us-gaap	Assets Current AssetsCurrent	628000000	USD
CY2015Q3	us-gaap	Assets Current AssetsCurrent	530100000	USD
CY2013	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	102000000	USD
CY2014	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	133500000	USD
CY2013	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	2051500000	USD
CY2014	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	2187100000	USD
CY2014Q3	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	3359400000	USD
CY2015Q3	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	3345100000	USD
CY2015	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	12100000	USD
CY2012Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	27500000	USD
CY2013Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	53000000	USD
CY2014Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	16100000	USD
CY2015Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	13800000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	25500000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-36900000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-2300000	USD
CY2014Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015Q3	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	4200000	shares
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.70
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.76
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.84
CY2014Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2014Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2015Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2014Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2015Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2014Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	43183818	shares
CY2015Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	43183818	shares
CY2014Q3	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	43200000	USD
CY2015Q3	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	43300000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	56100000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	83700000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	136600000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	920500000	USD
CY2014	us-gaap	Costs And Expenses CostsAndExpenses	1460800000	USD
CY2015	us-gaap	Costs And Expenses CostsAndExpenses	1703900000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-4200000	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	300000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-3300000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-300000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	600000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2014Q3	us-gaap	Customer Deposits Current CustomerDepositsCurrent	34000000	USD
CY2015Q3	us-gaap	Customer Deposits Current CustomerDepositsCurrent	32100000	USD
CY2014Q2	us-gaap	Debt Instrument Convertible Number Of Equity Instruments DebtInstrumentConvertibleNumberOfEquityInstruments	2875000	shares
CY2014Q2	us-gaap	Debt Instrument Convertible Number Of Equity Instruments DebtInstrumentConvertibleNumberOfEquityInstruments	2875000	Equity_Security
CY2014Q3	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	625000000.0	USD
CY2014	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.005
CY2015	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.007
CY2014Q2	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.02
CY2014Q3	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	2600000	USD
CY2015Q3	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	2300000	USD
CY2014Q3	us-gaap	Deferred Costs DeferredCosts	679300000	USD
CY2015Q3	us-gaap	Deferred Costs DeferredCosts	813000000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	19900000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	30600000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	58800000	USD
CY2014Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	515500000	USD
CY2015Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	602400000	USD
CY2013	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	22000000	USD
CY2014	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	900000	USD
CY2014	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	31400000	USD
CY2015	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	65500000	USD
CY2014Q3	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	32200000	USD
CY2015Q3	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	44300000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2400000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1000000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	6900000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Charitable Contribution Carryforwards DeferredTaxAssetsCharitableContributionCarryforwards	11000000	USD
CY2014Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	121800000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	126100000	USD
CY2014Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-393700000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-476300000	USD
CY2014Q3	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	-9900000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	5800000	USD
CY2014Q3	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	-383800000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	-482100000	USD
CY2014Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	8000000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	47300000	USD
CY2014Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	28900000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	0	USD
CY2014Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	67300000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	62500000	USD
CY2014Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	16000000	USD
CY2015Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	14800000	USD
CY2014Q3	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	9900000	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	0	USD
CY2014Q3	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	20400000	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	8100000	USD
CY2014Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	383800000	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	482100000	USD
CY2014Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	19700000	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	11600000	USD
CY2014Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	366900000	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	472100000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	8500000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	1500000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	9200000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	1600000	USD
CY2014Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	613700000	USD
CY2015Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	591400000	USD
CY2014Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	506600000	USD
CY2015Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	448900000	USD
CY2014Q3	us-gaap	Defined Benefit Plan Plans With Benefit Obligations In Excess Of Plan Assets Aggregate Benefit Obligation DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAggregateBenefitObligation	692400000	USD
CY2015Q3	us-gaap	Defined Benefit Plan Plans With Benefit Obligations In Excess Of Plan Assets Aggregate Benefit Obligation DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAggregateBenefitObligation	652300000	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	47200000	USD
CY2015	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	1800000	USD
CY2014Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	4100000	USD
CY2015Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	7600000	USD
CY2015Q3	us-gaap	Defined Benefit Plan Year That Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearThatRateReachesUltimateTrendRate	2020
CY2013	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	49300000	USD
CY2014	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	83300000	USD
CY2015	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	130800000	USD
CY2014	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500
CY2015	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500
CY2014Q3	us-gaap	Defined Benefit Plan Year That Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearThatRateReachesUltimateTrendRate	2020
CY2014Q3	us-gaap	Derivative Assets DerivativeAssets	2800000	USD
CY2015Q3	us-gaap	Derivative Assets DerivativeAssets	5200000	USD
CY2014Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	2400000	USD
CY2015Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	4600000	USD
CY2014Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	7700000	USD
CY2015Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	13500000	USD
CY2014Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	12000000	USD
CY2015Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	29800000	USD
CY2013	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-500000	USD
CY2014	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	67200000	USD
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	80200000	USD
CY2014Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	19900000	USD
CY2015Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	21100000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.03
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.09
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.59
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.35
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.36
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.09
CY2015Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.18
CY2015Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.43
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.16
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.02
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.09
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.59
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.35
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.35
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.09
CY2015Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.18
CY2015Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.32
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.43
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.16
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.250
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.276
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.312
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation And Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciationAndAmortization	-0.097
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation And Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciationAndAmortization	-0.049
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation And Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciationAndAmortization	-0.037
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.022
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.036
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.025
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.016
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.007
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.006
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.035
CY2014	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.018
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.030
CY2014Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	36000000	USD
CY2015Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	32700000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1400000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1800000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1800000	USD
CY2014	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	200000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	200000	USD
CY2015Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	7800000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y9M18D
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1200000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1500000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1900000	USD
CY2014Q3	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	245500000	USD
CY2015Q3	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	188600000	USD
CY2014Q3	us-gaap	Energy Related Inventory Propane Gas EnergyRelatedInventoryPropaneGas	11700000	USD
CY2015Q3	us-gaap	Energy Related Inventory Propane Gas EnergyRelatedInventoryPropaneGas	12000000	USD
CY2013	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	0	USD
CY2014	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	0	USD
CY2015	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	4700000	USD
CY2014Q3	us-gaap	Goodwill Goodwill	937800000	USD
CY2015Q3	us-gaap	Goodwill Goodwill	946000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	70400000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	116900000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	199100000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17600000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32300000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	62200000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	200000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	9400000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-3400000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1300000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	35400000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	8600000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-30000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	700000	USD
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	5300000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4800000	USD
CY2013	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	3700000	USD
CY2014	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-800000	USD
CY2015	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-17000000	USD
CY2013	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	-23100000	USD
CY2014	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	36400000	USD
CY2015	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	-46900000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	30600000	USD
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	15500000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-54800000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-2800000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	27500000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	67600000	USD
CY2013	us-gaap	Increase Decrease In Recoverable Refundable Gas Costs IncreaseDecreaseInRecoverableRefundableGasCosts	-13300000	USD
CY2014	us-gaap	Increase Decrease In Recoverable Refundable Gas Costs IncreaseDecreaseInRecoverableRefundableGasCosts	-13900000	USD
CY2015	us-gaap	Increase Decrease In Recoverable Refundable Gas Costs IncreaseDecreaseInRecoverableRefundableGasCosts	19800000	USD
CY2013	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	8200000	USD
CY2014	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	19100000	USD
CY2015	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-20300000	USD
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	100000	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	100000	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	100000	shares
CY2013	us-gaap	Interest Expense InterestExpense	28600000	USD
CY2014	us-gaap	Interest Expense InterestExpense	46200000	USD
CY2015	us-gaap	Interest Expense InterestExpense	74600000	USD
CY2013	us-gaap	Interest Expense Debt InterestExpenseDebt	3100000	USD
CY2014	us-gaap	Interest Expense Debt InterestExpenseDebt	6900000	USD
CY2015	us-gaap	Interest Expense Debt InterestExpenseDebt	8000000	USD
CY2013	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	25500000	USD
CY2014	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	39300000	USD
CY2015	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	66600000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	26300000	USD
CY2014	us-gaap	Interest Paid Net InterestPaidNet	40600000	USD
CY2015	us-gaap	Interest Paid Net InterestPaidNet	65300000	USD
CY2014Q3	us-gaap	Interest Payable Current InterestPayableCurrent	15100000	USD
CY2015Q3	us-gaap	Interest Payable Current InterestPayableCurrent	14300000	USD
CY2014Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5074000000	USD
CY2015Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5290200000	USD
CY2014Q3	us-gaap	Liabilities Current LiabilitiesCurrent	785800000	USD
CY2015Q3	us-gaap	Liabilities Current LiabilitiesCurrent	853800000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-600000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-300000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	5000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-4500000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-5500000	USD
CY2014Q3	us-gaap	Other Deferred Credits Current OtherDeferredCreditsCurrent	4100000	USD
CY2015Q3	us-gaap	Other Deferred Credits Current OtherDeferredCreditsCurrent	800000	USD
CY2014Q3	us-gaap	Other Inventory Purchased Goods OtherInventoryPurchasedGoods	13000000	USD
CY2013	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	300000	USD
CY2015Q3	us-gaap	Other Inventory Purchased Goods OtherInventoryPurchasedGoods	14800000	USD
CY2014Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	47800000	USD
CY2015Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	32500000	USD
CY2014Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	75100000	USD
CY2015Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	77300000	USD
CY2013	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	1000000	USD
CY2014	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	300000	USD
CY2015	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	500000	USD
CY2013	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	300000	USD
CY2014	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	300000	USD
CY2015	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	500000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2500000	USD
CY2014	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-3700000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	700000	USD
CY2013	us-gaap	Payments Of Dividends PaymentsOfDividends	42500000	USD
CY2014	us-gaap	Payments Of Dividends PaymentsOfDividends	61900000	USD
CY2015	us-gaap	Payments Of Dividends PaymentsOfDividends	79000000	USD
CY2013	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	0	USD
CY2014	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	1305200000	USD
CY2015	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	8200000	USD
CY2014Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	928800000	USD
CY2015Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1091300000	USD
CY2014	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	82300000	USD
CY2015	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	300600000	USD
CY2015Q3	us-gaap	Long Term Debt LongTermDebt	1710000000	USD
CY2014Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2015Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	80000000	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	80000000	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	40000000	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	175000000	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	100000000	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	250000000	USD
CY2014Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1851000000	USD
CY2015Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1771500000	USD
CY2015	us-gaap	Long Term Purchase Commitment Amount LongTermPurchaseCommitmentAmount	1369300000	USD
CY2015Q3	us-gaap	Longterm Debt Percentage Bearing Fixed Interest Amount LongtermDebtPercentageBearingFixedInterestAmount	1603800000	USD
CY2015Q3	us-gaap	Longterm Debt Percentage Bearing Variable Interest Amount LongtermDebtPercentageBearingVariableInterestAmount	250000000	USD
CY2015Q3	us-gaap	Mortgage Loans On Real Estate Carrying Amount Of Mortgages MortgageLoansOnRealEstateCarryingAmountOfMortgages	1500000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	969900000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1278100000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-26000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1108300000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1437600000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-298700000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	163900000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	122600000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	322400000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	52800000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	35600000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	52200000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	11700000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	-14900000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	84600000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	47100000	USD
CY2015Q1	us-gaap	Net Income Loss NetIncomeLoss	94400000	USD
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	14100000	USD
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	-18700000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	136900000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	52500000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	84300000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	136400000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	52500000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	84300000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	136400000	USD
CY2013	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	975000000	USD
CY2014	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	5400000	USD
CY2015	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	6400000	USD
CY2014Q3	us-gaap	Other Receivables From Broker Dealers And Clearing Organizations OtherReceivablesFromBrokerDealersAndClearingOrganizations	4400000	USD
CY2015Q3	us-gaap	Other Receivables From Broker Dealers And Clearing Organizations OtherReceivablesFromBrokerDealersAndClearingOrganizations	5900000	USD
CY2014	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	-23900000	USD
CY2015	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	0	USD
CY2013	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	130800000	USD
CY2014	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	171000000	USD
CY2015	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	289800000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	130800000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	2500000	USD
CY2014	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-3300000	USD
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	1200000	USD
CY2014Q3	us-gaap	Notes Payable Current NotesPayableCurrent	287100000	USD
CY2015Q3	us-gaap	Notes Payable Current NotesPayableCurrent	338000000	USD
CY2014Q3	us-gaap	Notes Receivable Net NotesReceivableNet	10900000	USD
CY2015Q3	us-gaap	Notes Receivable Net NotesReceivableNet	11200000	USD
CY2015	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	Operating_Segment
CY2015	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1	reporting_unit
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	96500000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	62900000	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	87200000	USD
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	24700000	USD
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-8400000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	166400000	USD
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	87300000	USD
CY2015Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	157700000	USD
CY2015Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	36000000	USD
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-8500000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	272500000	USD
CY2015Q3	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	123900000	USD
CY2014Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	65000000	USD
CY2015Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	75400000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	5400000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-1500000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-600000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	5300000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	-2000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	-1100000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3300000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-900000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-300000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-100000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-500000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-500000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-100000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	0	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	100000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-300000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-2500000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-4400000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-200000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-500000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-400000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	2100000	USD
CY2014Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	9200000	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	171000000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	289800000	USD
CY2014Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	244900000	USD
CY2015Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	253400000	USD
CY2014Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2015Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2014Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	21600000	USD
CY2015Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	25300000	USD
CY2014Q2	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	143800000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	431700000	USD
CY2014	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	460000000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	3100000	USD
CY2013Q3	us-gaap	Proceeds From Issuance Of First Mortgage Bond ProceedsFromIssuanceOfFirstMortgageBond	450000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	575000000	USD
CY2014	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	768800000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	35000000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3200000	USD
CY2014	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-6900000	USD
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1100000	USD
CY2013	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	33900000	USD
CY2014	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	198100000	USD
CY2015	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	50800000	USD
CY2013	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	0	USD
CY2014	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	11000000	USD
CY2015	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	0	USD
CY2014Q2	us-gaap	Proceeds From Sale Of Interest In Corporate Unit ProceedsFromSaleOfInterestInCorporateUnit	139400000	USD
CY2015Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	13700000	USD
CY2014Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1168600000	USD
CY2015Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1307000000	USD
CY2014Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	2759700000	USD
CY2015Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	2927500000	USD
CY2014Q3	us-gaap	Public Utilities Property Plant And Equipment Transmission And Distribution PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution	3928300000	USD
CY2015Q3	us-gaap	Public Utilities Property Plant And Equipment Transmission And Distribution PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution	4234500000	USD
CY2014Q3	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	3000000	USD
CY2015Q3	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	13900000	USD
CY2014	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-900000	USD
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-300000	USD
CY2013	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	1017000000	USD
CY2013Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	468600000	USD
CY2014Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	694500000	USD
CY2014Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	241800000	USD
CY2014Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	222300000	USD
CY2014	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	1627200000	USD
CY2015	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	1545000000	USD
CY2013	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	48300000	USD
CY2014	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	82400000	USD
CY2015	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	129900000	USD
CY2013	us-gaap	Utilities Operating Expense Gas And Petroleum Purchased UtilitiesOperatingExpenseGasAndPetroleumPurchased	433400000	USD
CY2014	us-gaap	Utilities Operating Expense Gas And Petroleum Purchased UtilitiesOperatingExpenseGasAndPetroleumPurchased	731700000	USD
CY2015	us-gaap	Utilities Operating Expense Gas And Petroleum Purchased UtilitiesOperatingExpenseGasAndPetroleumPurchased	882400000	USD
CY2013	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	180300000	USD
CY2014	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	287800000	USD
CY2015	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	390600000	USD
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	43200000	shares
CY2014Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	619600000	USD
CY2015Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	877400000	USD
CY2015Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	275200000	USD
CY2015Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	204200000	USD
CY2015	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	1976400000	USD
CY2013	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	847200000	USD
CY2014	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	1462600000	USD
CY2015	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	1891800000	USD
CY2014Q3	us-gaap	Regulatory Assets RegulatoryAssets	695100000	USD
CY2015Q3	us-gaap	Regulatory Assets RegulatoryAssets	778100000	USD
CY2014Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	26800000	USD
CY2015Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	27600000	USD
CY2014Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	614300000	USD
CY2015Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	737600000	USD
CY2014Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	189500000	USD
CY2015Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	179900000	USD
CY2014Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	41300000	USD
CY2015Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	32400000	USD
CY2014Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	125800000	USD
CY2015Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	119300000	USD
CY2014Q3	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	373900000	USD
CY2015Q3	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	372400000	USD
CY2015	us-gaap	Remaining Recovery Period Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided1 RemainingRecoveryPeriodOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided1	P15Y
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	25000000	USD
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	80000000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	34800000	USD
CY2014Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	437500000	USD
CY2015Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	494200000	USD
CY2013	us-gaap	Revenues Revenues	1017000000	USD
CY2014	us-gaap	Revenues Revenues	1627200000	USD
CY2015	us-gaap	Revenues Revenues	1976400000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0000
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0000
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0000
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.196
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.180
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.140
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0032
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0053
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0083
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	1000000	shares
CY2015Q3	us-gaap	Share Price SharePrice	54.53
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y9M18D
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y9M18D
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y9M18D
CY2014Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	287100000	USD
CY2015Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	338000000	USD
CY2014Q3	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.005
CY2015Q3	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.008
CY2014	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	300500000.0	USD
CY2015	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	488500000.0	USD
CY2013	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	1800000	USD
CY2014	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	1500000	USD
CY2015	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	1600000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	427200000	USD
CY2014	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	456800000	USD
CY2013	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	2700000	USD
CY2014	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	1700000	USD
CY2015	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	5100000	USD
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4400000	USD
CY2014	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	5800000	USD
CY2015	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3000000	USD
CY2012Q3	us-gaap	Stockholders Equity StockholdersEquity	601600000	USD
CY2013Q3	us-gaap	Stockholders Equity StockholdersEquity	1046300000	USD
CY2014Q3	us-gaap	Stockholders Equity StockholdersEquity	1508400000	USD
CY2015Q3	us-gaap	Stockholders Equity StockholdersEquity	1573600000	USD
CY2014Q2	us-gaap	Subordinated Borrowing Interest Rate SubordinatedBorrowingInterestRate	0.02
CY2015Q3	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	2800000	USD
CY2014Q3	us-gaap	Taxes Payable Current TaxesPayableCurrent	63400000	USD
CY2015Q3	us-gaap	Taxes Payable Current TaxesPayableCurrent	51700000	USD
CY2014Q3	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	10800000	USD
CY2015Q3	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	2600000	USD
CY2012Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5800000	USD
CY2013Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2400000	USD
CY2014Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4600000	USD
CY2015Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7100000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1500000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2600000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2900000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	100000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2013	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	5000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	400000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	400000	USD
CY2014Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2500000	USD
CY2015Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3100000	USD
CY2013	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	722100000	USD
CY2014	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	1213900000	USD
CY2013	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	180300000	USD
CY2014	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	287800000	USD
CY2015	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	390600000	USD
CY2013	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	60100000	USD
CY2014	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	112000000	USD
CY2015	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	142100000	USD
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26000000	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	35900000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43300000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25900000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	35800000	shares
CY2015	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:16px;text-align:left;font-size:10pt;"><font style="font-family:Calibri,sans-serif;font-size:10pt;font-weight:bold;">USE OF ESTIMATES </font><font style="font-family:Calibri,sans-serif;font-size:10pt;">– The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

Files In Submission

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$SR
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2015 Form 10-K Financial Statement

#000112695615000077 Filed on November 24, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SR Spire Inc Stock $sr

2015 Form 10-K Financial Statement

#000112695615000077 Filed on November 24, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SR
Spire Inc Stock $sr