Table: Recorded Unconditional Purchase Obligation [Table]

Line Label Object Class Period Type Balance Name
1 Recorded Unconditional Purchase Obligation [Table] [Table]

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 us-gaap:RecordedUnconditionalPurchaseObligationTable
2 Legal Entity [Axis] [Axis]

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 dei:LegalEntityAxis
3 Consolidated Entity [Domain] [Domain]

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 dei:EntityDomain
4 Recorded Unconditional Purchase Obligation Category of Item Purchased [Axis] [Axis]

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 us-gaap:RecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis
5 Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] [Domain]

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 us-gaap:UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain
6 Capital Additions [Member] [Member]

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 us-gaap:CapitalAdditionsMember
7 Inventories [Member] [Member]

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 us-gaap:InventoriesMember
8 Public Utilities, Inventory, Fuel [Member] [Member]

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 us-gaap:PublicUtilitiesInventoryFuelMember
9 Research and Development Arrangement [Member] [Member]

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 us-gaap:ResearchAndDevelopmentArrangementMember
10 Capacity [Member] [Member]

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 us-gaap:CapacityMember
11 Recorded Unconditional Purchase Obligation [Line Items] [Line Items]

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 us-gaap:RecordedUnconditionalPurchaseObligationLineItems
12 Recorded Unconditional Purchase Obligations [Table Text Block] [Concept] Text Block (HTML) For Period

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 us-gaap:RecordedUnconditionalPurchaseObligationsTextBlock
13 Recorded Unconditional Purchase Obligation [Hierarchy] [Abstract]

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 added:RecordedUnconditionalPurchaseObligationHierarchy
14 Recorded Unconditional Purchase Obligation, Description [Concept] Text/String For Period

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 us-gaap:RecordedUnconditionalPurchaseObligationDescription
15 Recorded Unconditional Purchase Obligation, Amount of Maturities and Sinking Fund Requirements [Concept] Monetary As Of Credit us-gaap:RecordedUnconditionalPurchaseObligationAmountOfMaturitiesAndSinkingFundRequirements
16 Recorded Unconditional Purchase Obligation, Nonfinancial Assets Pledged as Security, Description [Concept] Text/String For Period

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 us-gaap:RecordedUnconditionalPurchaseObligationNonfinancialAssetsPledgedAsSecurityDescription
17 Recorded Unconditional Purchase Obligation, Nonfinancial Assets Pledged as Security, Value [Concept] Monetary As Of Debit us-gaap:RecordedUnconditionalPurchaseObligationNonfinancialAssetsPledgedAsSecurityValue
18 Recorded Unconditional Purchase Obligation, Minimum Quantity Required [Concept] Decimal As Of

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 us-gaap:RecordedUnconditionalPurchaseObligationMinimumQuantityRequired
19 Recorded Unconditional Purchase Obligation Payment Schedule [Roll Up] [Abstract]

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 us-gaap:RecordedUnconditionalPurchaseObligationPaymentScheduleAbstract
20 Recorded Unconditional Purchase Obligation Due within One Year [Concept] Monetary As Of Credit us-gaap:RecordedUnconditionalPurchaseObligationDueWithinOneYear
21 Recorded Unconditional Purchase Obligation Due in Second Year [Concept] Monetary As Of Credit us-gaap:RecordedUnconditionalPurchaseObligationDueInSecondYear
22 Recorded Unconditional Purchase Obligation Due in Third Year [Concept] Monetary As Of Credit us-gaap:RecordedUnconditionalPurchaseObligationDueInThirdYear
23 Recorded Unconditional Purchase Obligation Due in Fourth Year [Concept] Monetary As Of Credit us-gaap:RecordedUnconditionalPurchaseObligationDueInFourthYear
24 Recorded Unconditional Purchase Obligation Due in Fifth Year [Concept] Monetary As Of Credit us-gaap:RecordedUnconditionalPurchaseObligationDueInFifthYear
25 Recorded Unconditional Purchase Obligation Due after Fifth Year [Concept] Monetary As Of Credit us-gaap:RecordedUnconditionalPurchaseObligationDueAfterFifthYear
26 Recorded Unconditional Purchase Obligation, Total [Concept] Monetary As Of Credit us-gaap:RecordedUnconditionalPurchaseObligation