10-Q Filing

MDU RESOURCES GROUP INC CIK: 67716 Q3 2018

Filing Information

Form Type	10-Q
Accession Number	`0000067716-18-000070`
Period End Date	20180930
Filing Date	20181102
Fiscal Year	2018
Fiscal Period	Q3
XBRL Instance	a2018q3form10-q_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 122 Income Statement 108 Cash Flow Statement 80 Stockholders Equity 39 Comprehensive Income 80

Balance Sheet 122 line items

Line Item	Tag	Value	Unit	Period
Common stock, shares issued	`CommonStockSharesIssued`	196.56M	shares	Point-in-time
Common stock, shares issued	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Common stock, shares issued	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$37.36M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$46.11M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$67.08M	USD	Point-in-time
Treasury shares	`TreasuryStockCommonShares`	538,921.00	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$34.60M	USD	Point-in-time
Treasury shares	`TreasuryStockCommonShares`	538,921.00	shares	Point-in-time
Treasury shares	`TreasuryStockCommonShares`	538,921.00	shares	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Receivables, net	`ReceivablesNetCurrent`	$787.34M	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Receivables, net	`ReceivablesNetCurrent`	$727.03M	USD	Point-in-time
Receivables, net	`ReceivablesNetCurrent`	$739.40M	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Inventories	`InventoryNet`	$232.56M	USD	Point-in-time
Inventories	`InventoryNet`	$226.58M	USD	Point-in-time
Inventories	`InventoryNet`	$270.29M	USD	Point-in-time
Common stock, par value	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, par value	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, par value	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Prepayments and other current assets	`OtherAssetsCurrent`	$89.62M	USD	Point-in-time
Prepayments and other current assets	`OtherAssetsCurrent`	$88.76M	USD	Point-in-time
Prepayments and other current assets	`OtherAssetsCurrent`	$81.30M	USD	Point-in-time
Current assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$479.00K	USD	Point-in-time
Current assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$304.00K	USD	Point-in-time
Current assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$571.00K	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.21B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.07B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.10B	USD	Point-in-time
Investments	`LongTermInvestments`	$133.90M	USD	Point-in-time
Investments	`LongTermInvestments`	$143.30M	USD	Point-in-time
Investments	`LongTermInvestments`	$137.61M	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$6.66B	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$6.77B	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$7.10B	USD	Point-in-time
Less accumulated depreciation, depletion and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.80B	USD	Point-in-time
Less accumulated depreciation, depletion and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.67B	USD	Point-in-time
Less accumulated depreciation, depletion and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.69B	USD	Point-in-time
Net property, plant and equipment	`PropertyPlantAndEquipmentNet`	$3.99B	USD	Point-in-time
Net property, plant and equipment	`PropertyPlantAndEquipmentNet`	$4.08B	USD	Point-in-time
Net property, plant and equipment	`PropertyPlantAndEquipmentNet`	$4.31B	USD	Point-in-time
Goodwill	`Goodwill`	$631.79M	USD	Point-in-time
Goodwill	`Goodwill`	$640.20M	USD	Point-in-time
Goodwill	`Goodwill`	$631.79M	USD	Point-in-time
Goodwill	`Goodwill`	$631.79M	USD	Point-in-time
Other intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$4.21M	USD	Point-in-time
Other intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$3.84M	USD	Point-in-time
Other intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$4.32M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$407.85M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$419.85M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$408.18M	USD	Point-in-time
Noncurrent assets held for sale	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$1.83M	USD	Point-in-time
Noncurrent assets held for sale	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$64.33M	USD	Point-in-time
Noncurrent assets held for sale	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$4.39M	USD	Point-in-time
Total deferred charges and other assets	`AssetsNoncurrent`	$1.05B	USD	Point-in-time
Total deferred charges and other assets	`AssetsNoncurrent`	$1.12B	USD	Point-in-time
Total deferred charges and other assets	`AssetsNoncurrent`	$1.05B	USD	Point-in-time
Total assets	`Assets`	$6.34B	USD	Point-in-time
Total assets	`Assets`	$6.72B	USD	Point-in-time
Total assets	`Assets`	$6.33B	USD	Point-in-time
Long-term debt due within one year	`LongTermDebtCurrent`	$148.50M	USD	Point-in-time
Long-term debt due within one year	`LongTermDebtCurrent`	$148.50M	USD	Point-in-time
Long-term debt due within one year	`LongTermDebtCurrent`	$3.92M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$304.10M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$312.33M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$339.71M	USD	Point-in-time
Taxes payable	`TaxesPayableCurrent`	$42.54M	USD	Point-in-time
Taxes payable	`TaxesPayableCurrent`	$50.46M	USD	Point-in-time
Taxes payable	`TaxesPayableCurrent`	$108.95M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$37.60M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$38.57M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$38.71M	USD	Point-in-time
Accrued compensation	`EmployeeRelatedLiabilitiesCurrent`	$62.84M	USD	Point-in-time
Accrued compensation	`EmployeeRelatedLiabilitiesCurrent`	$72.92M	USD	Point-in-time
Accrued compensation	`EmployeeRelatedLiabilitiesCurrent`	$67.10M	USD	Point-in-time
Other accrued liabilities	`OtherLiabilitiesCurrent`	$221.62M	USD	Point-in-time
Other accrued liabilities	`OtherLiabilitiesCurrent`	$184.58M	USD	Point-in-time
Other accrued liabilities	`OtherLiabilitiesCurrent`	$186.01M	USD	Point-in-time
Current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$11.99M	USD	Point-in-time
Current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$7.96M	USD	Point-in-time
Current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$5.75M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$812.86M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$725.22M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$856.57M	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$1.91B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$1.59B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$1.57B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$652.41M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$405.76M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$347.27M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$889.49M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$1.18B	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$1.15B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.54B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.53B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.56B	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Authorized - 500,000,000 shares, $1.00 par value Shares issued - 196,557,245 at September 30, 2018 and 195,843,297 at September 30, 2017 and December 31, 2017	`CommonStockValue`	$195.84M	USD	Point-in-time
Authorized - 500,000,000 shares, $1.00 par value Shares issued - 196,557,245 at September 30, 2018 and 195,843,297 at September 30, 2017 and December 31, 2017	`CommonStockValue`	$195.84M	USD	Point-in-time
Authorized - 500,000,000 shares, $1.00 par value Shares issued - 196,557,245 at September 30, 2018 and 195,843,297 at September 30, 2017 and December 31, 2017	`CommonStockValue`	$196.56M	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.23B	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.25B	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.23B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.04B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$964.27M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.12B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-43.62M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-37.33M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-35.34M	USD	Point-in-time
Treasury stock at cost - 538,921 shares	`TreasuryStockCommonValue`	$3.63M	USD	Point-in-time
Treasury stock at cost - 538,921 shares	`TreasuryStockCommonValue`	$3.63M	USD	Point-in-time
Treasury stock at cost - 538,921 shares	`TreasuryStockCommonValue`	$3.63M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$2.52B	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$2.43B	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$2.35B	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$6.33B	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$6.34B	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$6.72B	USD	Point-in-time

Income Statement 108 line items

Line Item	Tag	Value	Unit	Period
Operating revenues:	`Revenues`	$1.28B	USD	1 Quarter
Operating revenues:	`Revenues`	$1.27B	USD	1 Quarter
Operating revenues:	`Revenues`	$3.28B	USD	3 Qtrs
Operating revenues:	`Revenues`	$3.32B	USD	3 Qtrs
Operation and maintenance:	`SellingGeneralAndAdministrativeExpense`	$2.35B	USD	3 Qtrs
Operation and maintenance:	`SellingGeneralAndAdministrativeExpense`	$973.97M	USD	1 Quarter
Operation and maintenance:	`SellingGeneralAndAdministrativeExpense`	$996.59M	USD	1 Quarter
Operation and maintenance:	`SellingGeneralAndAdministrativeExpense`	$2.42B	USD	3 Qtrs
Purchased natural gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$33.32M	USD	1 Quarter
Purchased natural gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$32.12M	USD	1 Quarter
Purchased natural gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$270.32M	USD	3 Qtrs
Purchased natural gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$283.94M	USD	3 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$161.30M	USD	3 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$55.02M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$52.16M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$155.14M	USD	3 Qtrs
Taxes, other than income	`TaxesExcludingIncomeAndExciseTaxes`	$38.88M	USD	1 Quarter
Taxes, other than income	`TaxesExcludingIncomeAndExciseTaxes`	$127.27M	USD	3 Qtrs
Taxes, other than income	`TaxesExcludingIncomeAndExciseTaxes`	$38.65M	USD	1 Quarter
Taxes, other than income	`TaxesExcludingIncomeAndExciseTaxes`	$128.26M	USD	3 Qtrs
Electric fuel and purchased power	`UtilitiesOperatingExpensePurchasedPower`	$58.90M	USD	3 Qtrs
Electric fuel and purchased power	`UtilitiesOperatingExpensePurchasedPower`	$57.54M	USD	3 Qtrs
Electric fuel and purchased power	`UtilitiesOperatingExpensePurchasedPower`	$18.91M	USD	1 Quarter
Electric fuel and purchased power	`UtilitiesOperatingExpensePurchasedPower`	$18.41M	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$3.04B	USD	3 Qtrs
Total operating expenses	`OperatingExpenses`	$2.98B	USD	3 Qtrs
Total operating expenses	`OperatingExpenses`	$1.12B	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$1.14B	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$283.37M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$299.76M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$140.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$155.32M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$2.07M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$4.86M	USD	3 Qtrs
Other income	`OtherNonoperatingIncomeExpense`	$6.21M	USD	3 Qtrs
Other income	`OtherNonoperatingIncomeExpense`	$2.68M	USD	1 Quarter
Interest expense	`InterestExpense`	$61.98M	USD	3 Qtrs
Interest expense	`InterestExpense`	$62.20M	USD	3 Qtrs
Interest expense	`InterestExpense`	$20.91M	USD	1 Quarter
Interest expense	`InterestExpense`	$20.95M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$136.48M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$226.03M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$121.73M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$244.00M	USD	3 Qtrs
Income taxes	`IncomeTaxExpenseBenefit`	$46.93M	USD	1 Quarter
Income taxes	`IncomeTaxExpenseBenefit`	$32.63M	USD	3 Qtrs
Income taxes	`IncomeTaxExpenseBenefit`	$14.36M	USD	1 Quarter
Income taxes	`IncomeTaxExpenseBenefit`	$74.41M	USD	3 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperations`	$193.41M	USD	3 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperations`	$169.59M	USD	3 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperations`	$107.37M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperations`	$89.55M	USD	1 Quarter
Income (loss) from discontinued operations, net of tax (Note 10)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-118.00K	USD	1 Quarter
Income (loss) from discontinued operations, net of tax (Note 10)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-2.20M	USD	1 Quarter
Income (loss) from discontinued operations, net of tax (Note 10)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$85.00K	USD	3 Qtrs
Income (loss) from discontinued operations, net of tax (Note 10)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-3.70M	USD	3 Qtrs
Net income	`ProfitLoss`	$87.35M	USD	1 Quarter
Net income	`ProfitLoss`	$107.25M	USD	1 Quarter
Net income	`ProfitLoss`	$193.49M	USD	3 Qtrs
Net income	`ProfitLoss`	$165.89M	USD	3 Qtrs
Loss on redemption of preferred stocks	`PreferredStockRedemptionPremium`	$600.00K	USD	3 Qtrs
Loss on redemption of preferred stocks	`PreferredStockRedemptionPremium`	-	USD	3 Qtrs
Loss on redemption of preferred stocks	`PreferredStockRedemptionPremium`	-	USD	1 Quarter
Loss on redemption of preferred stocks	`PreferredStockRedemptionPremium`	-	USD	1 Quarter
Dividends declared on preferred stocks	`PreferredStockDividendsIncomeStatementImpact`	-	USD	1 Quarter
Dividends declared on preferred stocks	`PreferredStockDividendsIncomeStatementImpact`	-	USD	1 Quarter
Dividends declared on preferred stocks	`PreferredStockDividendsIncomeStatementImpact`	$171.00K	USD	3 Qtrs
Dividends declared on preferred stocks	`PreferredStockDividendsIncomeStatementImpact`	-	USD	3 Qtrs
Earnings on common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$107.25M	USD	1 Quarter
Earnings on common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$87.35M	USD	1 Quarter
Earnings on common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$193.49M	USD	3 Qtrs
Earnings on common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$165.12M	USD	3 Qtrs
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.55	USD	1 Quarter
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.99	USD	3 Qtrs
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.46	USD	1 Quarter
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.86	USD	3 Qtrs
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.01	USD	3 Qtrs
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.01	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	-	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	-	USD	3 Qtrs
Earnings per common share - basic	`EarningsPerShareBasic`	$0.45	USD	1 Quarter
Earnings per common share - basic	`EarningsPerShareBasic`	$0.99	USD	3 Qtrs
Earnings per common share - basic	`EarningsPerShareBasic`	$0.85	USD	3 Qtrs
Earnings per common share - basic	`EarningsPerShareBasic`	$0.55	USD	1 Quarter
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.46	USD	1 Quarter
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.55	USD	1 Quarter
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.99	USD	3 Qtrs
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.86	USD	3 Qtrs
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-0.01	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	-	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	-	USD	3 Qtrs
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-0.02	USD	3 Qtrs
Earnings per common share - diluted	`EarningsPerShareDiluted`	$0.45	USD	1 Quarter
Earnings per common share - diluted	`EarningsPerShareDiluted`	$0.99	USD	3 Qtrs
Earnings per common share - diluted	`EarningsPerShareDiluted`	$0.55	USD	1 Quarter
Earnings per common share - diluted	`EarningsPerShareDiluted`	$0.84	USD	3 Qtrs
Dividends declared per common share	`CommonStockDividendsPerShareDeclared`	$0.58	USD	3 Qtrs
Dividends declared per common share	`CommonStockDividendsPerShareDeclared`	$0.19	USD	1 Quarter
Dividends declared per common share	`CommonStockDividendsPerShareDeclared`	$0.20	USD	1 Quarter
Dividends declared per common share	`CommonStockDividendsPerShareDeclared`	$0.59	USD	3 Qtrs
Weighted average common shares outstanding - basic	`WeightedAverageNumberOfSharesOutstandingBasic`	195.30M	shares	1 Quarter
Weighted average common shares outstanding - basic	`WeightedAverageNumberOfSharesOutstandingBasic`	195.62M	shares	3 Qtrs
Weighted average common shares outstanding - basic	`WeightedAverageNumberOfSharesOutstandingBasic`	196.02M	shares	1 Quarter
Weighted average common shares outstanding - basic	`WeightedAverageNumberOfSharesOutstandingBasic`	195.30M	shares	3 Qtrs
Weighted average common shares outstanding - diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	195.92M	shares	3 Qtrs
Weighted average common shares outstanding - diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	196.26M	shares	1 Quarter
Weighted average common shares outstanding - diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	196.10M	shares	3 Qtrs
Weighted average common shares outstanding - diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	195.78M	shares	1 Quarter

Cash Flow Statement 80 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$87.35M	USD	1 Quarter
Net income	`ProfitLoss`	$107.25M	USD	1 Quarter
Net income	`ProfitLoss`	$193.49M	USD	3 Qtrs
Net income	`ProfitLoss`	$165.89M	USD	3 Qtrs
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-3.70M	USD	3 Qtrs
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$85.00K	USD	3 Qtrs
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-2.20M	USD	1 Quarter
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-118.00K	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperations`	$89.55M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperations`	$193.41M	USD	3 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperations`	$107.37M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperations`	$169.59M	USD	3 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$52.16M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$155.14M	USD	3 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$55.02M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$161.30M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$42.43M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-16.78M	USD	3 Qtrs
Receivables	`IncreaseDecreaseInReceivables`	$121.13M	USD	3 Qtrs
Receivables	`IncreaseDecreaseInReceivables`	$55.75M	USD	3 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$38.78M	USD	3 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$-2.05M	USD	3 Qtrs
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$40.66M	USD	3 Qtrs
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$3.45M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$30.10M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$16.16M	USD	3 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$31.97M	USD	3 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$66.65M	USD	3 Qtrs
Other noncurrent changes	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$15.08M	USD	3 Qtrs
Other noncurrent changes	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$27.17M	USD	3 Qtrs
Net cash provided by continuing operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$320.10M	USD	3 Qtrs
Net cash provided by continuing operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$229.88M	USD	3 Qtrs
Net cash provided by (used in) discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$42.02M	USD	3 Qtrs
Net cash provided by (used in) discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$-2.72M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$271.90M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$317.38M	USD	3 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$222.08M	USD	3 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$345.60M	USD	3 Qtrs
Acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$27.86M	USD	3 Qtrs
Acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	3 Qtrs
Net proceeds from sale or disposition of property and other	`ProceedsFromSaleOfProductiveAssets`	$121.16M	USD	3 Qtrs
Net proceeds from sale or disposition of property and other	`ProceedsFromSaleOfProductiveAssets`	$12.45M	USD	3 Qtrs
Investments	`PaymentsForProceedsFromInvestments`	$260.00K	USD	3 Qtrs
Investments	`PaymentsForProceedsFromInvestments`	$1.56M	USD	3 Qtrs
Net cash used in continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-101.18M	USD	3 Qtrs
Net cash used in continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-362.57M	USD	3 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$2.23M	USD	3 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$1.24M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-98.95M	USD	3 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-361.33M	USD	3 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$356.95M	USD	3 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$133.44M	USD	3 Qtrs
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$183.97M	USD	3 Qtrs
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$157.31M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividends`	$115.86M	USD	3 Qtrs
Dividends paid	`PaymentsOfDividends`	$113.13M	USD	3 Qtrs
Redemption of preferred stock	`PaymentsForRepurchaseOfPreferredStockAndPreferenceStock`	$15.60M	USD	3 Qtrs
Redemption of preferred stock	`PaymentsForRepurchaseOfPreferredStockAndPreferenceStock`	-	USD	3 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.68M	USD	3 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$5.02M	USD	3 Qtrs
Tax withholding on stock-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.33M	USD	3 Qtrs
Tax withholding on stock-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$757.00K	USD	3 Qtrs
Net cash provided by (used in) continuing operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$76.43M	USD	3 Qtrs
Net cash provided by (used in) continuing operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-181.70M	USD	3 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	3 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	3 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-181.70M	USD	3 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$76.43M	USD	3 Qtrs
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-1.00K	USD	3 Qtrs
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-1.00K	USD	3 Qtrs
Increase (decrease) in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$32.48M	USD	3 Qtrs
Increase (decrease) in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-8.75M	USD	3 Qtrs
Cash and cash equivalents -- beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$67.08M	USD	Point-in-time
Cash and cash equivalents -- beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$34.60M	USD	Point-in-time
Cash and cash equivalents -- beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$37.36M	USD	Point-in-time
Cash and cash equivalents -- beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$46.11M	USD	Point-in-time
Cash and cash equivalents -- end of period	`CashAndCashEquivalentsAtCarryingValue`	$46.11M	USD	Point-in-time
Cash and cash equivalents -- end of period	`CashAndCashEquivalentsAtCarryingValue`	$67.08M	USD	Point-in-time
Cash and cash equivalents -- end of period	`CashAndCashEquivalentsAtCarryingValue`	$37.36M	USD	Point-in-time
Cash and cash equivalents -- end of period	`CashAndCashEquivalentsAtCarryingValue`	$34.60M	USD	Point-in-time

Stockholders Equity 39 line items

Line Item	Tag	Value	Unit	Period
Balance (in shares)	`CommonStockSharesIssued`	196.56M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.35B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.43B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.52B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.32B	USD	Point-in-time
Adjusted balance at January 1, 2018	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1`	$2.43B	USD	Point-in-time
Net income	`ProfitLoss`	$165.89M	USD	3 Qtrs
Net income	`ProfitLoss`	$193.49M	USD	3 Qtrs
Net income	`ProfitLoss`	$107.25M	USD	1 Quarter
Net income	`ProfitLoss`	$87.35M	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$392.00K	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$516.00K	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$448.00K	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.67M	USD	3 Qtrs
Dividends declared on preferred stocks	`DividendsPreferredStockCash`	$171.00K	USD	3 Qtrs
Dividends declared on common stock	`DividendsCommonStockCash`	$116.00M	USD	3 Qtrs
Dividends declared on common stock	`DividendsCommonStockCash`	$112.79M	USD	3 Qtrs
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions`	$2.39M	USD	3 Qtrs
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions`	$3.41M	USD	3 Qtrs
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$5.02M	USD	3 Qtrs
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$1.68M	USD	3 Qtrs
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.33M	USD	3 Qtrs
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$757.00K	USD	3 Qtrs
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$17.99M	USD	3 Qtrs
Redemption of preferred stock	`PreferredStockRedemptionPremium`	-	USD	1 Quarter
Redemption of preferred stock	`PreferredStockRedemptionPremium`	-	USD	1 Quarter
Redemption of preferred stock	`PreferredStockRedemptionPremium`	$600.00K	USD	3 Qtrs
Redemption of preferred stock	`PreferredStockRedemptionPremium`	-	USD	3 Qtrs
Redemption of preferred stock	`PaymentsForRepurchaseOfPreferredStockAndPreferenceStock`	$15.60M	USD	3 Qtrs
Redemption of preferred stock	`PaymentsForRepurchaseOfPreferredStockAndPreferenceStock`	-	USD	3 Qtrs
Balance (in shares)	`CommonStockSharesIssued`	196.56M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.52B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.35B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.43B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.32B	USD	Point-in-time

Comprehensive Income 80 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$87.35M	USD	1 Quarter
Reclassification adjustment for loss on derivative instruments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-168.00K	USD	3 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-56.00K	USD	1 Quarter
Net income	`ProfitLoss`	$107.25M	USD	1 Quarter
Net income	`ProfitLoss`	$193.49M	USD	3 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-164.00K	USD	3 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-55.00K	USD	1 Quarter
Net income	`ProfitLoss`	$165.89M	USD	3 Qtrs
Amortization of postretirement liability losses included in net periodic benefit cost (credit), tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$142.00K	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$203.00K	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$442.00K	USD	3 Qtrs
Amortization of postretirement liability losses included in net periodic benefit cost (credit), tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$609.00K	USD	3 Qtrs
Reclassification of postretirement liability adjustment from regulatory asset, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetTax`	-	USD	1 Quarter
Reclassification of postretirement liability adjustment from regulatory asset, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetTax`	$-725.00K	USD	3 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, net of tax of $55 and $56 for the three months ended and $164 and $168 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-92.00K	USD	1 Quarter
Reclassification adjustment for loss on derivative instruments included in net income, net of tax of $55 and $56 for the three months ended and $164 and $168 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-279.00K	USD	3 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, net of tax of $55 and $56 for the three months ended and $164 and $168 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-92.00K	USD	1 Quarter
Reclassification of postretirement liability adjustment from regulatory asset, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetTax`	-	USD	1 Quarter
Reclassification adjustment for loss on derivative instruments included in net income, net of tax of $55 and $56 for the three months ended and $164 and $168 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-275.00K	USD	3 Qtrs
Reclassification of postretirement liability adjustment from regulatory asset, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetTax`	-	USD	3 Qtrs
Foreign currency translation adjustments recognized during the period, tax	`OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax`	$9.00K	USD	1 Quarter
Foreign currency translation adjustments recognized during the period, tax	`OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax`	$-14.00K	USD	3 Qtrs
Foreign currency translation adjustments recognized during the period, tax	`OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax`	-	USD	1 Quarter
Foreign currency translation adjustments recognized during the period, tax	`OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax`	$5.00K	USD	3 Qtrs
Reclassification of foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax`	-	USD	3 Qtrs
Amortization of postretirement liability losses included in net periodic benefit cost (credit), net of tax of $142 and $203 for the three months ended and $442 and $609 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$442.00K	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), net of tax of $142 and $203 for the three months ended and $442 and $609 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$333.00K	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), net of tax of $142 and $203 for the three months ended and $442 and $609 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$1.31M	USD	3 Qtrs
Reclassification of foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax`	-	USD	1 Quarter
Reclassification of foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax`	-	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), net of tax of $142 and $203 for the three months ended and $442 and $609 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$1.00M	USD	3 Qtrs
Reclassification of foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax`	$-75.00K	USD	3 Qtrs
Reclassification of postretirement liability adjustment from regulatory asset, net of tax of $0 and $0 for the three months ended and $0 and $(725) for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetNetofTax`	$-917.00K	USD	3 Qtrs
Reclassification of postretirement liability adjustment from regulatory asset, net of tax of $0 and $0 for the three months ended and $0 and $(725) for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetNetofTax`	-	USD	3 Qtrs
Net unrealized loss on available-for-sale investments arising during the period, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-52.00K	USD	3 Qtrs
Net unrealized loss on available-for-sale investments arising during the period, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-38.00K	USD	3 Qtrs
Reclassification of postretirement liability adjustment from regulatory asset, net of tax of $0 and $0 for the three months ended and $0 and $(725) for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetNetofTax`	-	USD	1 Quarter
Net unrealized loss on available-for-sale investments arising during the period, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-13.00K	USD	1 Quarter
Net unrealized loss on available-for-sale investments arising during the period, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-10.00K	USD	1 Quarter
Reclassification of postretirement liability adjustment from regulatory asset, net of tax of $0 and $0 for the three months ended and $0 and $(725) for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetNetofTax`	-	USD	1 Quarter
Postretirement liability adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-442.00K	USD	1 Quarter
Postretirement liability adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.31M	USD	3 Qtrs
Reclassification adjustment for loss on available-for-sale investments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$-14.00K	USD	1 Quarter
Reclassification adjustment for loss on available-for-sale investments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$-9.00K	USD	1 Quarter
Reclassification adjustment for loss on available-for-sale investments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$-26.00K	USD	3 Qtrs
Postretirement liability adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-333.00K	USD	1 Quarter
Reclassification adjustment for loss on available-for-sale investments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$-50.00K	USD	3 Qtrs
Postretirement liability adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-85.00K	USD	3 Qtrs
Foreign currency translation adjustment recognized during the period, net of tax of $0 and $9 for the three months ended and $(14) and $5 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$9.00K	USD	3 Qtrs
Foreign currency translation adjustment recognized during the period, net of tax of $0 and $9 for the three months ended and $(14) and $5 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$-61.00K	USD	3 Qtrs
Foreign currency translation adjustment recognized during the period, net of tax of $0 and $9 for the three months ended and $(14) and $5 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$15.00K	USD	1 Quarter
Foreign currency translation adjustment recognized during the period, net of tax of $0 and $9 for the three months ended and $(14) and $5 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Reclassification adjustment for foreign currency translation adjustment included in net income, net of tax of $0 and $0 for the three months ended and $75 and $0 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax`	-	USD	1 Quarter
Reclassification adjustment for foreign currency translation adjustment included in net income, net of tax of $0 and $0 for the three months ended and $75 and $0 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax`	$-249.00K	USD	3 Qtrs
Reclassification adjustment for foreign currency translation adjustment included in net income, net of tax of $0 and $0 for the three months ended and $75 and $0 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax`	-	USD	3 Qtrs
Reclassification adjustment for foreign currency translation adjustment included in net income, net of tax of $0 and $0 for the three months ended and $75 and $0 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax`	-	USD	1 Quarter
Foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$9.00K	USD	3 Qtrs
Foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$188.00K	USD	3 Qtrs
Foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	1 Quarter
Foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$15.00K	USD	1 Quarter
Net unrealized loss on available-for-sale investments arising during the period, net of tax of $(13) and $(10) for the three months ended and $(52) and $(38) for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-199.00K	USD	3 Qtrs
Net unrealized loss on available-for-sale investments arising during the period, net of tax of $(13) and $(10) for the three months ended and $(52) and $(38) for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-70.00K	USD	3 Qtrs
Net unrealized loss on available-for-sale investments arising during the period, net of tax of $(13) and $(10) for the three months ended and $(52) and $(38) for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-51.00K	USD	1 Quarter
Net unrealized loss on available-for-sale investments arising during the period, net of tax of $(13) and $(10) for the three months ended and $(52) and $(38) for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-19.00K	USD	1 Quarter
Reclassification adjustment for loss on available-for-sale investments included in net income, net of tax of $9 and $14 for the three months ended and $26 and $50 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-97.00K	USD	3 Qtrs
Reclassification adjustment for loss on available-for-sale investments included in net income, net of tax of $9 and $14 for the three months ended and $26 and $50 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-27.00K	USD	1 Quarter
Reclassification adjustment for loss on available-for-sale investments included in net income, net of tax of $9 and $14 for the three months ended and $26 and $50 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-93.00K	USD	3 Qtrs
Reclassification adjustment for loss on available-for-sale investments included in net income, net of tax of $9 and $14 for the three months ended and $26 and $50 for the nine months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-33.00K	USD	1 Quarter
Net unrealized gain (loss) on available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$8.00K	USD	1 Quarter
Net unrealized gain (loss) on available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-18.00K	USD	1 Quarter
Net unrealized gain (loss) on available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$23.00K	USD	3 Qtrs
Net unrealized gain (loss) on available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-102.00K	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.67M	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$392.00K	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$516.00K	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$448.00K	USD	1 Quarter
Comprehensive income attributable to common stockholders	`ComprehensiveIncomeNetOfTax`	$107.77M	USD	1 Quarter
Comprehensive income attributable to common stockholders	`ComprehensiveIncomeNetOfTax`	$87.80M	USD	1 Quarter
Comprehensive income attributable to common stockholders	`ComprehensiveIncomeNetOfTax`	$166.28M	USD	3 Qtrs
Comprehensive income attributable to common stockholders	`ComprehensiveIncomeNetOfTax`	$195.16M	USD	3 Qtrs

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.