10-K Filing

WEC ENERGY GROUP, INC. CIK: 783325 FY 2018

Filing Information

Form Type	10-K
Accession Number	`0000107815-19-000128`
Period End Date	20181231
Filing Date	20190226
Fiscal Year	2018
Fiscal Period	FY
XBRL Instance	wec-20181231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 83 Income Statement 100 Cash Flow Statement 105 Stockholders Equity 24 Comprehensive Income 18

Balance Sheet 83 line items

Line Item	Tag	Value	Unit	Period
Accounts receivable and unbilled revenues, reserves	`AllowanceForDoubtfulAccountsReceivableCurrent`	$149.20M	USD	Point-in-time
Accounts receivable and unbilled revenues, reserves	`AllowanceForDoubtfulAccountsReceivableCurrent`	$143.20M	USD	Point-in-time
Property, plant, and equipment, accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$8.52B	USD	Point-in-time
Property, plant, and equipment, accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$8.62B	USD	Point-in-time
Common stock, par value	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	325.00M	shares	Point-in-time
Common stock, shares outstanding	`CommonStockSharesOutstanding`	315.52M	shares	Point-in-time
Common stock, shares outstanding	`CommonStockSharesOutstanding`	315.57M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$84.50M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$37.50M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$38.90M	USD	Point-in-time
Accounts receivable and unbilled revenues, net of reserves of $149.2 and $143.2, respectively	`AccountsReceivableNetCurrent`	$1.35B	USD	Point-in-time
Accounts receivable and unbilled revenues, net of reserves of $149.2 and $143.2, respectively	`AccountsReceivableNetCurrent`	$1.28B	USD	Point-in-time
Materials, supplies, and inventories	`EnergyRelatedInventory`	$548.20M	USD	Point-in-time
Materials, supplies, and inventories	`EnergyRelatedInventory`	$539.00M	USD	Point-in-time
Prepayments	`PrepaidExpenseCurrent`	$210.00M	USD	Point-in-time
Prepayments	`PrepaidExpenseCurrent`	$256.80M	USD	Point-in-time
Other	`OtherAssetsCurrent`	$74.90M	USD	Point-in-time
Other	`OtherAssetsCurrent`	$77.20M	USD	Point-in-time
Current assets	`AssetsCurrent`	$2.21B	USD	Point-in-time
Current assets	`AssetsCurrent`	$2.25B	USD	Point-in-time
Property, plant, and equipment, net of accumulated depreciation of $8,515.9 and $8,618.5, respectively	`PropertyPlantAndEquipmentNet`	$22.00B	USD	Point-in-time
Property, plant, and equipment, net of accumulated depreciation of $8,515.9 and $8,618.5, respectively	`PropertyPlantAndEquipmentNet`	$21.35B	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$2.80B	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$3.81B	USD	Point-in-time
Equity investment in transmission affiliates	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$1.55B	USD	Point-in-time
Equity investment in transmission affiliates	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$1.67B	USD	Point-in-time
Goodwill	`Goodwill`	$3.05B	USD	Point-in-time
Goodwill	`Goodwill`	$3.05B	USD	Point-in-time
Goodwill	`Goodwill`	$3.05B	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$704.10M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$619.90M	USD	Point-in-time
Long-term assets	`AssetsNoncurrent`	$29.38B	USD	Point-in-time
Long-term assets	`AssetsNoncurrent`	$31.23B	USD	Point-in-time
Total assets	`Assets`	$33.48B	USD	Point-in-time
Total assets	`Assets`	$30.12B	USD	Point-in-time
Total assets	`Assets`	$31.59B	USD	Point-in-time
Short-term debt	`CommercialPaper`	$1.44B	USD	Point-in-time
Short-term debt	`CommercialPaper`	$1.44B	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$842.10M	USD	Point-in-time
Current portion of long-term debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$365.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$876.40M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$859.90M	USD	Point-in-time
Accrued payroll and benefits	`EmployeeRelatedLiabilitiesCurrent`	$185.40M	USD	Point-in-time
Accrued payroll and benefits	`EmployeeRelatedLiabilitiesCurrent`	$169.10M	USD	Point-in-time
Other	`OtherLiabilitiesCurrent`	$464.80M	USD	Point-in-time
Other	`OtherLiabilitiesCurrent`	$553.60M	USD	Point-in-time
Current liabilities	`LiabilitiesCurrent`	$3.33B	USD	Point-in-time
Current liabilities	`LiabilitiesCurrent`	$3.87B	USD	Point-in-time
Long-term debt	`LongTermDebt`	$9.99B	USD	Point-in-time
Long-term debt	`LongTermDebt`	$8.75B	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesNoncurrent`	$3.00B	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesNoncurrent`	$3.39B	USD	Point-in-time
Deferred revenue, net	`DeferredRevenueNoncurrent`	$520.40M	USD	Point-in-time
Deferred revenue, net	`DeferredRevenueNoncurrent`	$543.30M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$4.25B	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$3.72B	USD	Point-in-time
Environmental remediation liabilities	`AccruedEnvironmentalLossContingenciesNoncurrent`	$617.40M	USD	Point-in-time
Environmental remediation liabilities	`AccruedEnvironmentalLossContingenciesNoncurrent`	$616.40M	USD	Point-in-time
Pension and OPEB obligations	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$422.80M	USD	Point-in-time
Pension and OPEB obligations	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$397.40M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$1.21B	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$1.11B	USD	Point-in-time
Long-term liabilities	`LiabilitiesNoncurrent`	$20.30B	USD	Point-in-time
Long-term liabilities	`LiabilitiesNoncurrent`	$18.23B	USD	Point-in-time
Commitments and Contingencies (Note 22)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and Contingencies (Note 22)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock - $0.01 par value; 325,000,000 shares authorized; 315,523,192 and 315,574,624 shares outstanding, respectively	`CommonStockValue`	$3.20M	USD	Point-in-time
Common stock - $0.01 par value; 325,000,000 shares authorized; 315,523,192 and 315,574,624 shares outstanding, respectively	`CommonStockValue`	$3.20M	USD	Point-in-time
Additional paid in capital	`AdditionalPaidInCapitalCommonStock`	$4.25B	USD	Point-in-time
Additional paid in capital	`AdditionalPaidInCapitalCommonStock`	$4.28B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$5.54B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$5.18B	USD	Point-in-time
Accumulated other comprehensive (loss) income	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-2.60M	USD	Point-in-time
Accumulated other comprehensive (loss) income	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$2.90M	USD	Point-in-time
Common shareholders' equity	`TotalCommonShareholdersEquity`	$9.79B	USD	Point-in-time
Common shareholders' equity	`TotalCommonShareholdersEquity`	$9.46B	USD	Point-in-time
Preferred stock of subsidiary	`PreferredStockValue`	$30.40M	USD	Point-in-time
Preferred stock of subsidiary	`PreferredStockValue`	$30.40M	USD	Point-in-time
Noncontrolling interests	`OtherMinorityInterests`	-	USD	Point-in-time
Noncontrolling interests	`OtherMinorityInterests`	$23.40M	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$33.48B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$31.59B	USD	Point-in-time

Income Statement 100 line items

Line Item	Tag	Value	Unit	Period
Operating revenues	`Revenues`	$7.47B	USD	Annual
Operating revenues	`Revenues`	$7.68B	USD	Annual
Operating revenues	`Revenues`	$1.66B	USD	1 Quarter
Operating revenues	`Revenues`	$2.06B	USD	1 Quarter
Operating revenues	`Revenues`	$1.63B	USD	1 Quarter
Operating revenues	`Revenues`	$1.64B	USD	1 Quarter
Operating revenues	`Revenues`	$7.65B	USD	Annual
Operating revenues	`Revenues`	$2.08B	USD	1 Quarter
Operating revenues	`Revenues`	$1.67B	USD	1 Quarter
Operating revenues	`Revenues`	$2.29B	USD	1 Quarter
Operating revenues	`Revenues`	$2.30B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$2.65B	USD	Annual
Cost of sales	`CostOfGoodsAndServicesSold`	$2.82B	USD	Annual
Cost of sales	`CostOfGoodsAndServicesSold`	$2.90B	USD	Annual
Other operation and maintenance	`OtherCostAndExpenseOperating`	$2.06B	USD	Annual
Other operation and maintenance	`OtherCostAndExpenseOperating`	$2.17B	USD	Annual
Other operation and maintenance	`OtherCostAndExpenseOperating`	$2.27B	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$762.60M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$798.60M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$845.80M	USD	Annual
Property and revenue taxes	`TaxesExcludingIncomeAndExciseTaxes`	$196.90M	USD	Annual
Property and revenue taxes	`TaxesExcludingIncomeAndExciseTaxes`	$194.70M	USD	Annual
Property and revenue taxes	`TaxesExcludingIncomeAndExciseTaxes`	$194.90M	USD	Annual
Total operating expenses	`CostsAndExpenses`	$5.78B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$5.87B	USD	Annual
Total operating expenses	`CostsAndExpenses`	$6.21B	USD	Annual
Operating income	`OperatingIncomeLoss`	$289.80M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$392.20M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$302.70M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$362.20M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$1.47B	USD	Annual
Operating income	`OperatingIncomeLoss`	$1.78B	USD	Annual
Operating income	`OperatingIncomeLoss`	$614.70M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$330.80M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$407.00M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$545.10M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$1.70B	USD	Annual
Equity in earnings of transmission affiliates	`IncomeLossFromEquityMethodInvestments`	$154.30M	USD	Annual
Equity in earnings of transmission affiliates	`IncomeLossFromEquityMethodInvestments`	$136.70M	USD	Annual
Equity in earnings of transmission affiliates	`IncomeLossFromEquityMethodInvestments`	$146.50M	USD	Annual
Other income, net	`OtherNonoperatingIncomeExpense`	$70.30M	USD	Annual
Other income, net	`OtherNonoperatingIncomeExpense`	$66.60M	USD	Annual
Other income, net	`OtherNonoperatingIncomeExpense`	$73.70M	USD	Annual
Interest expense	`InterestExpense`	$445.10M	USD	Annual
Interest expense	`InterestExpense`	$402.70M	USD	Annual
Interest expense	`InterestExpense`	$415.70M	USD	Annual
Other expense	`NonoperatingIncomeExpense`	$-189.60M	USD	Annual
Other expense	`NonoperatingIncomeExpense`	$-187.70M	USD	Annual
Other expense	`NonoperatingIncomeExpense`	$-238.10M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$1.23B	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$1.59B	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$1.51B	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$566.50M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$383.50M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$169.80M	USD	Annual
Net income	`IncomeLossFromContinuingOperations`	$1.06B	USD	Annual
Net income	`IncomeLossFromContinuingOperations`	$1.20B	USD	Annual
Net income	`IncomeLossFromContinuingOperations`	$940.20M	USD	Annual
Preferred stock dividends of subsidiary	`DividendsPreferredStockCash`	$1.20M	USD	Annual
Preferred stock dividends of subsidiary	`DividendsPreferredStockCash`	$1.20M	USD	Annual
Preferred stock dividends of subsidiary	`DividendsPreferredStockCash`	$1.20M	USD	Annual
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$233.20M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.20B	USD	Annual
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$205.00M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$199.10M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$356.60M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$231.00M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.06B	USD	Annual
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$390.10M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$432.60M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$215.40M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$939.00M	USD	Annual
Basic (in shares)	`EarningsPerShareBasic`	$1.37	USD	1 Quarter
Basic (in shares)	`EarningsPerShareBasic`	$3.81	USD	Annual
Basic (in shares)	`EarningsPerShareBasic`	$0.65	USD	1 Quarter
Basic (in shares)	`EarningsPerShareBasic`	$1.13	USD	1 Quarter
Basic (in shares)	`EarningsPerShareBasic`	$1.24	USD	1 Quarter
Basic (in shares)	`EarningsPerShareBasic`	$0.73	USD	1 Quarter
Basic (in shares)	`EarningsPerShareBasic`	$0.63	USD	1 Quarter
Basic (in shares)	`EarningsPerShareBasic`	$0.74	USD	1 Quarter
Basic (in shares)	`EarningsPerShareBasic`	$0.68	USD	1 Quarter
Basic (in shares)	`EarningsPerShareBasic`	$3.36	USD	Annual
Basic (in shares)	`EarningsPerShareBasic`	$2.98	USD	Annual
Diluted (in shares)	`EarningsPerShareDiluted`	$0.63	USD	1 Quarter
Diluted (in shares)	`EarningsPerShareDiluted`	$1.36	USD	1 Quarter
Diluted (in shares)	`EarningsPerShareDiluted`	$0.68	USD	1 Quarter
Diluted (in shares)	`EarningsPerShareDiluted`	$2.96	USD	Annual
Diluted (in shares)	`EarningsPerShareDiluted`	$0.73	USD	1 Quarter
Diluted (in shares)	`EarningsPerShareDiluted`	$3.34	USD	Annual
Diluted (in shares)	`EarningsPerShareDiluted`	$0.74	USD	1 Quarter
Diluted (in shares)	`EarningsPerShareDiluted`	$1.23	USD	1 Quarter
Diluted (in shares)	`EarningsPerShareDiluted`	$3.79	USD	Annual
Diluted (in shares)	`EarningsPerShareDiluted`	$1.12	USD	1 Quarter
Diluted (in shares)	`EarningsPerShareDiluted`	$0.65	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	315.50M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	315.60M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	315.60M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	317.20M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	316.90M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	316.90M	shares	Annual

Cash Flow Statement 105 line items

Line Item	Tag	Value	Unit	Period
Cash acquired from acquisition	`CashAcquiredFromAcquisition`	$4.50M	USD	Annual
Net income	`IncomeLossFromContinuingOperations`	$1.06B	USD	Annual
Net income	`IncomeLossFromContinuingOperations`	$1.20B	USD	Annual
Net income	`IncomeLossFromContinuingOperations`	$940.20M	USD	Annual
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$845.80M	USD	Annual
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$762.60M	USD	Annual
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$798.60M	USD	Annual
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$297.30M	USD	Annual
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$271.70M	USD	Annual
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$493.80M	USD	Annual
Contributions and payments related to pension and OPEB plans	`PensionAndOtherPostretirementBenefitContributions`	$120.50M	USD	Annual
Contributions and payments related to pension and OPEB plans	`PensionAndOtherPostretirementBenefitContributions`	$77.60M	USD	Annual
Contributions and payments related to pension and OPEB plans	`PensionAndOtherPostretirementBenefitContributions`	$28.70M	USD	Annual
Equity income in transmission affiliate, net of distributions	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$18.60M	USD	Annual
Equity income in transmission affiliate, net of distributions	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$46.60M	USD	Annual
Equity income in transmission affiliate, net of distributions	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$4.80M	USD	Annual
Accounts receivable and unbilled revenues	`IncreaseDecreaseInAccountsAndOtherReceivables`	$-23.50M	USD	Annual
Accounts receivable and unbilled revenues	`IncreaseDecreaseInAccountsAndOtherReceivables`	$180.70M	USD	Annual
Accounts receivable and unbilled revenues	`IncreaseDecreaseInAccountsAndOtherReceivables`	$86.40M	USD	Annual
Materials, supplies, and inventories	`IncreaseDecreaseInInventories`	$8.80M	USD	Annual
Materials, supplies, and inventories	`IncreaseDecreaseInInventories`	$-100.00M	USD	Annual
Materials, supplies, and inventories	`IncreaseDecreaseInInventories`	$-49.30M	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$7.10M	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$-103.20M	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$10.00M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$34.40M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$110.60M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$8.50M	USD	Annual
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-20.80M	USD	Annual
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-67.60M	USD	Annual
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$161.80M	USD	Annual
Other, net	`OtherOperatingActivitiesCashFlowStatement`	$-197.40M	USD	Annual
Other, net	`OtherOperatingActivitiesCashFlowStatement`	$-53.60M	USD	Annual
Other, net	`OtherOperatingActivitiesCashFlowStatement`	$290.40M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$2.10B	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$2.45B	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$2.08B	USD	Annual
Capital expenditures	`PaymentsToAcquireOtherPropertyPlantAndEquipment`	$2.12B	USD	Annual
Capital expenditures	`PaymentsToAcquireOtherPropertyPlantAndEquipment`	$1.96B	USD	Annual
Capital expenditures	`PaymentsToAcquireOtherPropertyPlantAndEquipment`	$1.42B	USD	Annual
Acquisition of Bishop Hill III, net of restricted cash acquired of $4.5 million	`PaymentsToAcquireAssetsInvestingActivities`	-	USD	Annual
Acquisition of Bishop Hill III, net of restricted cash acquired of $4.5 million	`PaymentsToAcquireAssetsInvestingActivities`	-	USD	Annual
Acquisition of Bishop Hill III, net of restricted cash acquired of $4.5 million	`PaymentsToAcquireAssetsInvestingActivities`	$162.90M	USD	Annual
Acquisition of Forward Wind Energy Center	`PaymentsToAcquireInterestInJointVenture`	-	USD	Annual
Acquisition of Forward Wind Energy Center	`PaymentsToAcquireInterestInJointVenture`	$77.10M	USD	Annual
Acquisition of Forward Wind Energy Center	`PaymentsToAcquireInterestInJointVenture`	-	USD	Annual
Acquisition of Coyote Ridge	`PaymentsToAcquireProductiveAssets`	-	USD	Annual
Acquisition of Coyote Ridge	`PaymentsToAcquireProductiveAssets`	-	USD	Annual
Acquisition of Coyote Ridge	`PaymentsToAcquireProductiveAssets`	$61.40M	USD	Annual
Acquisition of Bluewater	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Acquisition of Bluewater	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Acquisition of Bluewater	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$226.00M	USD	Annual
Capital contributions to transmission affiliates	`PaymentsToAcquireInterestInSubsidiariesAndAffiliates`	$42.30M	USD	Annual
Capital contributions to transmission affiliates	`PaymentsToAcquireInterestInSubsidiariesAndAffiliates`	$53.50M	USD	Annual
Capital contributions to transmission affiliates	`PaymentsToAcquireInterestInSubsidiariesAndAffiliates`	$109.60M	USD	Annual
Proceeds from the sale of assets and businesses	`ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets`	$12.10M	USD	Annual
Proceeds from the sale of assets and businesses	`ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets`	$24.00M	USD	Annual
Proceeds from the sale of assets and businesses	`ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets`	$166.30M	USD	Annual
Proceeds from the sale of investments held in rabbi trust	`ProceedsFromSaleOfRestrictedInvestments`	$118.60M	USD	Annual
Proceeds from the sale of investments held in rabbi trust	`ProceedsFromSaleOfRestrictedInvestments`	$1.70M	USD	Annual
Proceeds from the sale of investments held in rabbi trust	`ProceedsFromSaleOfRestrictedInvestments`	$8.70M	USD	Annual
Purchase of investments held in rabbi trust	`PaymentsToAcquireRestrictedInvestments`	$3.70M	USD	Annual
Purchase of investments held in rabbi trust	`PaymentsToAcquireRestrictedInvestments`	$59.20M	USD	Annual
Purchase of investments held in rabbi trust	`PaymentsToAcquireRestrictedInvestments`	$65.00M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-20.50M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-12.00M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-3.00M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-2.38B	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-1.35B	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-2.25B	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	$41.60M	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	$30.80M	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	$29.10M	USD	Annual
Purchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$72.40M	USD	Annual
Purchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$71.30M	USD	Annual
Purchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$108.00M	USD	Annual
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$624.90M	USD	Annual
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$697.30M	USD	Annual
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$656.50M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$1.74B	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$400.00M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$435.00M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$953.30M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$306.00M	USD	Annual
Retirement of long-term debt	`RepaymentsOfLongTermDebt`	$154.50M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess`	$-4.50M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess`	$584.40M	USD	Annual
Change in short-term debt	`ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess`	$-234.80M	USD	Annual
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$-15.20M	USD	Annual
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$-6.50M	USD	Annual
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$-13.60M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$26.40M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-845.70M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$161.40M	USD	Annual
Net change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$87.50M	USD	Annual
Net change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-14.10M	USD	Annual
Net change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-96.10M	USD	Annual
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$72.70M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$146.10M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$168.80M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$58.60M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$72.70M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$146.10M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$168.80M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$58.60M	USD	Point-in-time

Stockholders Equity 24 line items

Line Item	Tag	Value	Unit	Period
Dividends per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.55	USD	1 Quarter
Dividends per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.98	USD	Annual
Dividends per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$2.21	USD	Annual
Dividends per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.55	USD	1 Quarter
Dividends per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.55	USD	1 Quarter
Dividends per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.55	USD	1 Quarter
Dividends per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$2.08	USD	Annual
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$233.20M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.20B	USD	Annual
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$205.00M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$199.10M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$356.60M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$231.00M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.06B	USD	Annual
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$390.10M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$432.60M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$215.40M	USD	1 Quarter
Net income attributed to common shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$939.00M	USD	Annual
Other comprehensive loss, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-1.70M	USD	Annual
Other comprehensive loss, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	-	USD	Annual
Other comprehensive loss, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-5.50M	USD	Annual
Purchase of common stock	`StockRepurchasedDuringPeriodValue`	$72.40M	USD	Annual
Purchase of common stock	`StockRepurchasedDuringPeriodValue`	$71.30M	USD	Annual
Purchase of common stock	`StockRepurchasedDuringPeriodValue`	$108.00M	USD	Annual

Comprehensive Income 18 line items

Line Item	Tag	Value	Unit	Period
Pension and OPEB adjustments arising during the period, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax`	$1.20M	USD	Annual
Pension and OPEB adjustments arising during the period, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax`	$-600.00K	USD	Annual
Pension and OPEB adjustments arising during the period, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax`	$-100.00K	USD	Annual
Net income	`IncomeLossFromContinuingOperations`	$1.06B	USD	Annual
Net income	`IncomeLossFromContinuingOperations`	$1.20B	USD	Annual
Net income	`IncomeLossFromContinuingOperations`	$940.20M	USD	Annual
Other comprehensive loss, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-1.70M	USD	Annual
Other comprehensive loss, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	-	USD	Annual
Other comprehensive loss, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-5.50M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$1.05B	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$938.50M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$1.20B	USD	Annual
Preferred stock dividends of subsidiary	`DividendsPreferredStockCash`	$1.20M	USD	Annual
Preferred stock dividends of subsidiary	`DividendsPreferredStockCash`	$1.20M	USD	Annual
Preferred stock dividends of subsidiary	`DividendsPreferredStockCash`	$1.20M	USD	Annual
Comprehensive income attributed to common shareholders	`ComprehensiveIncomeNetOfTax`	$1.20B	USD	Annual
Comprehensive income attributed to common shareholders	`ComprehensiveIncomeNetOfTax`	$937.30M	USD	Annual
Comprehensive income attributed to common shareholders	`ComprehensiveIncomeNetOfTax`	$1.05B	USD	Annual

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