$OGS
ONE Gas, Inc. Stock $ogs

$ogs Overview Financials Valuation SEC Filings Company Website

2015 Q4 Form 10-K Financial Statement

#000158773216000088 Filed on February 18, 2016

Income Statement

Concept	2015 Q4	2015	2014 Q4
Revenue	$389.1M	$1.548B	$514.4M
YoY Change	-24.36%	-14.91%	-1.59%
Cost Of Revenue	$157.7M	$706.0M	$290.2M
YoY Change	-45.66%	-28.82%	-2.94%
Gross Profit	$231.4M	$841.7M	$224.2M
YoY Change	3.23%	1.79%	0.23%
Gross Profit Margin	59.47%	54.39%	43.58%
Selling, General & Admin	$123.1M	$469.6M	$122.4M
YoY Change	0.57%	-1.32%	7.37%
% of Gross Profit	53.19%	55.79%	54.6%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$34.40M	$133.0M	$31.70M
YoY Change	8.52%	5.81%	-29.08%
% of Gross Profit	14.87%	15.8%	14.14%
Operating Expenses	$157.5M	$602.6M	$154.2M
YoY Change	2.14%	0.15%	-2.84%
Operating Profit	$73.90M	$239.1M	$70.01M
YoY Change	5.56%	6.14%	7.68%
Interest Expense	-$11.00M	$44.57M	-$10.00M
YoY Change	10.0%	-2.77%	-36.31%
% of Operating Profit	-14.88%	18.64%	-14.28%
Other Income/Expense, Net	-$800.0K	-$2.600M	-$500.0K
YoY Change	60.0%	100.0%	-183.33%
Pretax Income	$62.20M	$192.0M	$59.60M
YoY Change	4.36%	7.79%	19.44%
Income Tax	$23.00M	$72.98M	$22.90M
% Of Pretax Income	36.98%	38.01%	38.42%
Net Earnings	$39.20M	$119.0M	$36.61M
YoY Change	7.09%	8.42%	20.74%
Net Earnings / Revenue	10.08%	7.69%	7.12%
Basic Earnings Per Share	$0.75	$2.26	$0.70
Diluted Earnings Per Share	$0.74	$2.24	$0.69
COMMON SHARES
Basic Shares Outstanding	52.15M shares	52.58M shares	52.05M shares
Diluted Shares Outstanding		53.25M shares

Balance Sheet

Concept	2015 Q4	2015	2014 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.400M	$2.400M	$11.90M
YoY Change	-79.83%	-79.83%	271.88%
Cash & Equivalents	$2.433M	$2.400M	$11.94M
Short-Term Investments
Other Short-Term Assets	$16.79M	$49.70M	$22.01M
YoY Change	-23.7%	-31.16%	-59.43%
Inventory	$175.5M	$175.5M	$212.8M
Prepaid Expenses
Receivables	$216.3M	$216.3M	$326.7M
Other Receivables	$38.90M	$38.90M	$43.80M
Total Short-Term Assets	$482.8M	$482.8M	$667.5M
YoY Change	-27.66%	-27.67%	10.85%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.512B	$3.512B	$3.294B
YoY Change	6.62%	6.62%	8.17%
Goodwill	$158.0M		$158.0M
YoY Change	0.0%		0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$46.19M	$482.1M	$51.31M
YoY Change	-9.98%	-9.04%	190.59%
Total Long-Term Assets	$4.152B	$4.152B	$3.982B
YoY Change	4.27%	4.28%	22.73%
TOTAL ASSETS
Total Short-Term Assets	$482.8M	$482.8M	$667.5M
Total Long-Term Assets	$4.152B	$4.152B	$3.982B
Total Assets	$4.635B	$4.635B	$4.649B
YoY Change	-0.31%	-0.31%	20.87%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$107.5M	$107.5M	$159.1M
YoY Change	-32.43%	-32.43%	-6.16%
Accrued Expenses	$31.47M	$87.60M	$26.02M
YoY Change	20.95%	-2.23%	443.08%
Deferred Revenue
YoY Change
Short-Term Debt	$12.50M	$12.50M	$42.00M
YoY Change	-70.24%	-70.24%	-90.56%
Long-Term Debt Due	$7.000K	$0.00	$6.000K
YoY Change	16.67%		0.0%
Total Short-Term Liabilities	$304.2M	$304.2M	$392.4M
YoY Change	-22.48%	-22.48%	-48.97%
LONG-TERM LIABILITIES
Long-Term Debt	$1.192B	$1.192B	$1.201B
YoY Change	-0.8%	-0.8%	91046.51%
Other Long-Term Liabilities	$73.24M	$345.5M	$79.07M
YoY Change	-7.37%	-5.81%	19.84%
Total Long-Term Liabilities	$1.265B	$1.537B	$1.280B
YoY Change	-1.21%	-1.97%	1802.72%
TOTAL LIABILITIES
Total Short-Term Liabilities	$304.2M	$304.2M	$392.4M
Total Long-Term Liabilities	$1.265B	$1.537B	$1.280B
Total Liabilities	$1.569B	$2.793B	$1.673B
YoY Change	-6.2%	-2.17%	100.01%
SHAREHOLDERS EQUITY
Retained Earnings	$95.05M		$39.89M
YoY Change	138.25%
Common Stock	$526.0K		$521.0K
YoY Change	0.96%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$14.49M		$0.00
YoY Change
Treasury Stock Shares	338.8K shares		0.000 shares
Shareholders Equity	$1.842B	$1.842B	$1.794B
YoY Change
Total Liabilities & Shareholders Equity	$4.635B	$4.635B	$4.649B
YoY Change	-0.31%	-0.31%	20.87%

Cashflow Statement

Concept	2015 Q4	2015	2014 Q4
OPERATING ACTIVITIES
Net Income	$39.20M	$119.0M	$36.61M
YoY Change	7.09%	8.42%	20.74%
Depreciation, Depletion And Amortization	$34.40M	$133.0M	$31.70M
YoY Change	8.52%	5.81%	-29.08%
Cash From Operating Activities	$58.40M	$407.9M	-$3.300M
YoY Change	-1869.7%	65.37%	-84.93%
INVESTING ACTIVITIES
Capital Expenditures	-$94.60M	$294.3M	-$72.50M
YoY Change	30.48%	-0.94%	-15.4%
Acquisitions
YoY Change
Other Investing Activities	$0.00	$0.00	$0.00
YoY Change			-100.0%
Cash From Investing Activities	-$94.60M	-$294.3M	-$72.50M
YoY Change	30.48%	-0.94%	-15.2%
FINANCING ACTIVITIES
Cash Dividend Paid		$62.83M
YoY Change		43.78%
Common Stock Issuance & Retirement, Net		$17.07M
YoY Change		-953.12%
Debt Paid & Issued, Net		$0.00
YoY Change
Cash From Financing Activities	-14.30M	-$123.1M	28.10M
YoY Change	-150.89%	-307.91%	-73.96%
NET CHANGE
Cash From Operating Activities	58.40M	$407.9M	-3.300M
Cash From Investing Activities	-94.60M	-$294.3M	-72.50M
Cash From Financing Activities	-14.30M	-$123.1M	28.10M
Net Change In Cash	-50.50M	-$9.510M	-47.70M
YoY Change	5.87%	-208.41%	-9640.0%
FREE CASH FLOW
Cash From Operating Activities	$58.40M	$407.9M	-$3.300M
Capital Expenditures	-$94.60M	$294.3M	-$72.50M
Free Cash Flow	$153.0M	$113.6M	$69.20M
YoY Change	121.1%	-325.21%	8.46%

Facts In Submission

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CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0001587732
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CY2015	dei	Entity Registrant Name EntityRegistrantName	ONE Gas, Inc.
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CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1397000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2055000	USD
CY2014Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	60003000	USD
CY2015Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	60325000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	53562000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	42024000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	56440000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	62205000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	49935000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	63789000	USD
CY2014Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1030189000	USD
CY2015Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1069781000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	8643000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7911000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7349000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	142514000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	117996000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	8144000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	0	USD
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	5655000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7848000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	887675000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	951785000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	894585000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	951785000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	193159000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	168115000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	820853000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	897667000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	16177000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	3999000	USD
CY2014	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-34169000	USD
CY2015	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-47494000	USD
CY2014	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-1211000	USD
CY2015	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-1962000	USD
CY2015	us-gaap	Defined Benefit Plan Amount And Timing Of Assets Expected To Be Returned To Employer During Following12 Month Period DefinedBenefitPlanAmountAndTimingOfAssetsExpectedToBeReturnedToEmployerDuringFollowing12MonthPeriod	0
CY2014Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0425
CY2015Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0475
CY2013	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0825
CY2014	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0775
	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0775
CY2015Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0775
CY2014Q1	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1100000000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Effect Of Plan Amendment On Net Periodic Benefit Cost DefinedBenefitPlanEffectOfPlanAmendmentOnNetPeriodicBenefitCost	3400000	USD
CY2014Q1	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	1000000000	USD
CY2015	us-gaap	Defined Benefit Plan Narrative Description Of Basis Used To Determine Overall Expected Long Term Rate Of Return On Assets Assumption DefinedBenefitPlanNarrativeDescriptionOfBasisUsedToDetermineOverallExpectedLongTermRateOfReturnOnAssetsAssumption	We determine our overall expected long-term rate of return on plan assets, based on our review of historical returns and economic growth models. As of December 31, 2014, we updated our assumed mortality rates to incorporate the new set of mortality tables issued by the Society of Actuaries in October 2014. We determine our discount rates annually. We estimate our discount rate based upon a comparison of the expected cash flows associated with our future payments under our defined benefit pension and other postemployment obligations to a hypothetical bond portfolio created using high-quality bonds that closely match expected cash flows. Bond portfolios are developed by selecting a bond for each of the next 60 years based on the maturity dates of the bonds. Bonds selected to be included in the portfolios are only those rated by Moody’s as AA- or better and exclude callable bonds, bonds with less than a minimum issue size, yield outliers and other filtering criteria to remove unsuitable bonds.
CY2015	us-gaap	Defined Benefit Plan Target Plan Asset Allocations DefinedBenefitPlanTargetPlanAssetAllocations	1
CY2014Q4	us-gaap	Defined Benefit Plan Year That Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearThatRateReachesUltimateTrendRate	2022
CY2015Q4	us-gaap	Defined Benefit Plan Year That Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearThatRateReachesUltimateTrendRate	2022
CY2013	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2014	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2015	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2014	us-gaap	Dividends Common Stock DividendsCommonStock	43696000	USD
CY2015	us-gaap	Dividends Common Stock DividendsCommonStock	62826000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.90
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.13
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.18
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.09
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.10
CY2015Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.15
CY2015Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.23
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2015Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.75
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.26
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.90
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.13
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.09
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.07
CY2015Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.13
CY2015Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.23
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.14
CY2015Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.74
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.24
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	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6100000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4400000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3500000	USD
CY2014Q4	us-gaap	Goodwill Goodwill	157953000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	157953000	USD
CY2013	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2014	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2015	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2013	us-gaap	Gross Profit GrossProfit	813008000	USD
CY2014Q1	us-gaap	Gross Profit GrossProfit	259836000	USD
CY2014Q2	us-gaap	Gross Profit GrossProfit	176493000	USD
CY2014Q3	us-gaap	Gross Profit GrossProfit	166452000	USD
CY2014Q4	us-gaap	Gross Profit GrossProfit	224176000	USD
CY2014	us-gaap	Gross Profit GrossProfit	826957000	USD
CY2015Q1	us-gaap	Gross Profit GrossProfit	262978000	USD
CY2015Q2	us-gaap	Gross Profit GrossProfit	176837000	USD
CY2015Q3	us-gaap	Gross Profit GrossProfit	170502000	USD
CY2015Q4	us-gaap	Gross Profit GrossProfit	231416000	USD
CY2015	us-gaap	Gross Profit GrossProfit	841733000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	161467000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	178128000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	192009000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	62272000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	68338000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	72979000	USD
CY2014Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	43800000	USD
CY2015Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	38877000	USD
CY2015Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	39000000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	56513000	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	62345000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	67203000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	98000	USD
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-58000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-338000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5661000	USD
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6051000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6114000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	0	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	44603000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-5423000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	37241000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-6881000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-59635000	USD
CY2013	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-5443000	USD
CY2014	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	21228000	USD
CY2015	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	5451000	USD
CY2013	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	-727000	USD
CY2014	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	2643000	USD
CY2015	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	322000	USD
CY2013	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	-8140000	USD
CY2014	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	0	USD
CY2015	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	0	USD
CY2013	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	0	USD
CY2014	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	43800000	USD
CY2015	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-4923000	USD
CY2013	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-1000	USD
CY2014	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	18743000	USD
CY2015	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	1000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	63139000	USD
CY2014	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	-10868000	USD
CY2013	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	1668000	USD
CY2013	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	102142000	USD
CY2014Q4	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	27511000	USD
CY2014Q4	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	27500000	USD
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	19172000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-43147000	USD
CY2015	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	5814000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-1291000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	45421000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	6147000	USD
CY2013	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	0	USD
CY2014	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-10102000	USD
CY2015	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-15033000	USD
CY2013	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	2449000	USD
CY2014	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	12316000	USD
CY2015	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	-7493000	USD
CY2014	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-23044000	USD
CY2015	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-105886000	USD
CY2013	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-29436000	USD
CY2014	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-30067000	USD
CY2015	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-50658000	USD
CY2013	us-gaap	Interest Expense InterestExpense	61366000	USD
CY2014	us-gaap	Interest Expense InterestExpense	45842000	USD
CY2015	us-gaap	Interest Expense InterestExpense	44570000	USD
CY2013	us-gaap	Interest Paid InterestPaid	0	USD
CY2014	us-gaap	Interest Paid InterestPaid	21066000	USD
CY2015	us-gaap	Interest Paid InterestPaid	42980000	USD
CY2014Q4	us-gaap	Interest Payable Current InterestPayableCurrent	18872000	USD
CY2015Q4	us-gaap	Interest Payable Current InterestPayableCurrent	18873000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4800000	USD
CY2014	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	5000000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	5000000	USD
CY2015Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1000000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4649210000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4644410000	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	392433000	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	304221000	USD
CY2014Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	0	USD
CY2015Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	0	USD
CY2015Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	686500000	USD
CY2014Q4	us-gaap	Long Term Debt LongTermDebt	1200000000	USD
CY2015Q4	us-gaap	Long Term Debt LongTermDebt	1200000000	USD
CY2014Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	6000	USD
CY2015Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	7000	USD
CY2014Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1201311000	USD
CY2015Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1201305000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	59076000	USD
CY2015Q4	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	33300000	USD
CY2015Q4	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	33325000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	135676000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	59212000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-109397000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-290753000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-297103000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-294320000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	154208000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	246663000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	109790000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	119030000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	119030000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	99195000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	394207000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	99195000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	9454000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	4653000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	36607000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	109790000	USD
CY2015Q1	us-gaap	Net Income Loss NetIncomeLoss	60381000	USD
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	12076000	USD
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	7371000	USD
CY2015Q4	us-gaap	Net Income Loss NetIncomeLoss	39202000	USD
CY2014Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	480998000	USD
CY2015Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	435141000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	220348000	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	109353000	USD
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	26812000	USD
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	19119000	USD
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	70010000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	225294000	USD
CY2015Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	109005000	USD
CY2015Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	31270000	USD
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	24951000	USD
CY2015Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	73903000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	239129000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	27100000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	4600000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	3300000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	3500000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4200000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	4500000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	7000000	USD
CY2014Q4	us-gaap	Other Assets Current OtherAssetsCurrent	22005000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	16789000	USD
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	51313000	USD
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	55838000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-2096000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	209000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	1442000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	-130000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	0	USD
CY2014	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-483000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	-513000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1781000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	773000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1781000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	-917000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-773000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	-315000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	-564000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	-198000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	-353000	USD
CY2014Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	9260000	USD
CY2015Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	11700000	USD
CY2014Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	79065000	USD
CY2015Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	73235000	USD
CY2013	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	3680000	USD
CY2014	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	2949000	USD
CY2015	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	2813000	USD
CY2013	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	6165000	USD
CY2014	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1625000	USD
CY2015	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	263000	USD
CY2013	us-gaap	Payments For Removal Costs PaymentsForRemovalCosts	46567000	USD
CY2014	us-gaap	Payments For Removal Costs PaymentsForRemovalCosts	47125000	USD
CY2015	us-gaap	Payments For Removal Costs PaymentsForRemovalCosts	51608000	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	24122000	USD
CY2013	us-gaap	Payments Of Capital Distribution PaymentsOfCapitalDistribution	14969000	USD
CY2014	us-gaap	Payments Of Capital Distribution PaymentsOfCapitalDistribution	0	USD
CY2015	us-gaap	Payments Of Capital Distribution PaymentsOfCapitalDistribution	0	USD
CY2013	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2014	us-gaap	Payments Of Dividends PaymentsOfDividends	43696000	USD
CY2015	us-gaap	Payments Of Dividends PaymentsOfDividends	62826000	USD
CY2013	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2014	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	11087000	USD
CY2015	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	292080000	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	297103000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	294320000	USD
CY2014Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	287779000	USD
CY2015Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	272309000	USD
CY2015Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2015Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2014Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2014	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2001000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	7051000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2014	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1199994000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2014Q1	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	1190000000	USD
CY2013	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	0	USD
CY2014	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	42000000	USD
CY2015	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	-29500000	USD
CY2013	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	150851000	USD
CY2014	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	0	USD
CY2015	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	0	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1327000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	4850201000	USD
CY2015Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	5132682000	USD
CY2015	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2013	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5460000	USD
CY2014	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	7195000	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4520000	USD
CY2014Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	185300000	USD
CY2015Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	142153000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1556481000	USD
CY2015Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1620771000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	3293720000	USD
CY2015Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	3511911000	USD
CY2015Q4	us-gaap	Ratio Of Indebtedness To Net Capital1 RatioOfIndebtednessToNetCapital1	0.4
CY2014Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	326749000	USD
CY2015Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	216343000	USD
CY2014	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-315000	USD
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-564000	USD
CY2013	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	1689952000	USD
CY2014Q1	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	766178000	USD
CY2014Q2	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	296838000	USD
CY2014Q3	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	241522000	USD
CY2014Q4	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	514368000	USD
CY2014	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	1818906000	USD
CY2015Q1	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	676531000	USD
CY2015Q2	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	256786000	USD
CY2015Q3	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	225226000	USD
CY2015Q4	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	389149000	USD
CY2015	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	1547692000	USD
CY2014Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	50193000	USD
CY2015Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	32925000	USD
CY2014Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	478723000	USD
CY2015Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	435863000	USD
CY2014Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	32467000	USD
CY2015Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	24615000	USD
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	206000	USD
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	39894000	USD
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	95046000	USD
CY2013	us-gaap	Segment Reporting Disclosure Of Major Customers SegmentReportingDisclosureOfMajorCustomers	0
CY2014	us-gaap	Segment Reporting Disclosure Of Major Customers SegmentReportingDisclosureOfMajorCustomers	0
CY2015	us-gaap	Segment Reporting Disclosure Of Major Customers SegmentReportingDisclosureOfMajorCustomers	0
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	0	USD
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	7613000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	9187000	USD
CY2015	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	14663000	USD
CY2015Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	20000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	1154797000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	1239023000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	1794037000	USD
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1400000	shares
CY2014Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0032
CY2015Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.007
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2014	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	9615000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	1841555000	USD
CY2014Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	0	shares
CY2015Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	338781	shares
CY2014Q4	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2015Q4	us-gaap	Treasury Stock Value TreasuryStockValue	14491000	USD
CY2015	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	24122000	USD
CY2014Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	141700000	USD
CY2015Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	109600000	USD
CY2013	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	592660000	USD
CY2014	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	601663000	USD
CY2015	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	602604000	USD
CY2013	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	144758000	USD
CY2014	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	125722000	USD
CY2015	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	133023000	USD
CY2013	us-gaap	Utilities Operating Expense Gas And Petroleum Purchased UtilitiesOperatingExpenseGasAndPetroleumPurchased	876944000	USD
CY2014	us-gaap	Utilities Operating Expense Gas And Petroleum Purchased UtilitiesOperatingExpenseGasAndPetroleumPurchased	991949000	USD
CY2015	us-gaap	Utilities Operating Expense Gas And Petroleum Purchased UtilitiesOperatingExpenseGasAndPetroleumPurchased	705959000	USD
CY2013	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	393072000	USD
CY2014	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	420686000	USD
CY2015	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	414476000	USD
CY2013	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	54830000	USD
CY2014	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	55255000	USD
CY2015	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	55105000	USD
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2014	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	582000	shares
CY2015	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	676000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52319000	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52946000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53254000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52319000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52364000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	52578000	shares
CY2015	us-gaap	Derivatives Reporting Of Derivative Activity DerivativesReportingOfDerivativeActivity	<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;font-weight:bold;">Derivatives and Risk Management Activities</font><font style="font-family:inherit;font-size:10pt;"> - We record all derivative instruments at fair value, with the exception of normal purchases and normal sales that are expected to result in physical delivery. The accounting for changes in the fair value of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and, if so, the reason for holding it, or if regulatory rulings require a different accounting treatment.</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:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">If certain conditions are met, we may elect to designate a derivative instrument as a hedge of exposure to changes in fair values or cash flows.</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:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The table below summarizes the various ways in which we account for our derivative instruments and the impact on our financial statements:</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="5" rowspan="1"></td></tr><tr><td width="23%" rowspan="1" colspan="1"></td><td width="3%" rowspan="1" colspan="1"></td><td width="35%" rowspan="1" colspan="1"></td><td width="3%" rowspan="1" colspan="1"></td><td width="36%" 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="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"> </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="text-align:right;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:2px 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;font-weight:bold;">Recognition and Measurement</font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:2px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Accounting Treatment</font></div></td><td style="vertical-align:bottom;border-bottom:2px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:2px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Balance Sheet</font></div></td><td style="vertical-align:bottom;border-bottom:2px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:2px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Income Statement</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:2px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="vertical-align:top;text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;vertical-align:top;">Normal purchases and</font></div><div style="vertical-align:top;text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;vertical-align:top;">normal sales</font></div></td><td style="vertical-align:top;border-bottom:2px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">-</font></div></td><td style="vertical-align:top;border-bottom:2px solid #000000;background-color:#cceeff;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;">Fair value not recorded</font></div></td><td style="vertical-align:top;border-bottom:2px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">-</font></div></td><td style="vertical-align:top;border-bottom:2px solid #000000;background-color:#cceeff;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;">Change in fair value not recognized in earnings</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:2px solid #000000;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;">Mark-to-market</font></div></td><td style="vertical-align:top;border-bottom:2px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">-</font></div></td><td style="vertical-align:top;border-bottom:2px solid #000000;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;">Recorded at fair value</font></div></td><td style="vertical-align:top;border-bottom:2px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">-</font></div></td><td style="vertical-align:top;border-bottom:2px solid #000000;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;">Change in fair value recognized in, and</font></div><div style="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">recoverable through, the purchased-gas cost adjustment mechanisms</font></div></td></tr></table></div></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:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We have not elected to designate any of our derivative instruments as hedges. Gains or losses associated with the fair value of commodity derivative instruments entered into by us are included in, and recoverable through, the purchased-gas cost adjustment mechanisms.</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:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">See Note 8 for additional information regarding our fair value measurements and hedging activities using derivatives.</font></div></div>
CY2015	us-gaap	Use Of Estimates UseOfEstimates	<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;font-weight:bold;">Use of Estimates</font><font style="font-family:inherit;font-size:10pt;"> - The preparation of our financial statements and related disclosures in accordance with GAAP requires us to make estimates and assumptions with respect to values or conditions that cannot be known with certainty that affect the reported amount of assets and liabilities, and the disclosure of contingent assets and liabilities at the date of the financial statements. These estimates and assumptions also affect the reported amounts of revenue and expenses during the reporting period. Items that may be estimated include, but are not limited to, the economic useful life of assets, fair value of assets and liabilities, provisions for doubtful accounts receivable, unbilled revenues for natural gas delivered but for which meters have not been read, natural gas purchased but for which no invoice has been received, provision for income taxes, including any deferred tax valuation allowances, the results of litigation and various other recorded or disclosed amounts.</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:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We evaluate these estimates on an ongoing basis using historical experience and other methods we consider reasonable based on the particular circumstances. Nevertheless, actual results may differ significantly from the estimates. Any effects on our financial position or results of operations from revisions to these estimates are recorded in the period when the facts that give rise to the revision become known.</font></div></div>

Files In Submission

Name	View Source	Status
0001587732-16-000088-index-headers.html	Edgar Link	pending
0001587732-16-000088-index.html	Edgar Link	pending
0001587732-16-000088.txt	Edgar Link	pending
0001587732-16-000088-xbrl.zip	Edgar Link	pending
a2015perfgraph.jpg	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
ogs-20151231.xml	Edgar Link	completed
ogs-20151231.xsd	Edgar Link	pending
ogs-20151231_cal.xml	Edgar Link	unprocessable
ogs-20151231_def.xml	Edgar Link	unprocessable
ogs-20151231_lab.xml	Edgar Link	unprocessable
ogs-20151231_pre.xml	Edgar Link	unprocessable
ogs10-k2015exhibit1024.htm	Edgar Link	pending
ogs10-k2015exhibit1025.htm	Edgar Link	pending
ogs10-k2015exhibit121.htm	Edgar Link	pending
ogs10-k2015exhibit211.htm	Edgar Link	pending
ogs10-k2015exhibit231.htm	Edgar Link	pending
ogs10-k2015exhibit311.htm	Edgar Link	pending
ogs10-k2015exhibit312.htm	Edgar Link	pending
ogs10-k2015exhibit321.htm	Edgar Link	pending
ogs10-k2015exhibit322.htm	Edgar Link	pending
onegas10-k2015.htm	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$OGS
ONE Gas, Inc. Stock $ogs

2015 Q4 Form 10-K Financial Statement

#000158773216000088 Filed on February 18, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OGS ONE Gas, Inc. Stock $ogs

2015 Q4 Form 10-K Financial Statement

#000158773216000088 Filed on February 18, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OGS
ONE Gas, Inc. Stock $ogs