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Note 8. Debt and Capital Lease Obligations (Non-Solar System Narrative) (Details) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2015
Dec. 31, 2014
Dec. 20, 2013
Sep. 28, 2012
May 29, 2014
Sep. 24, 2012
Dec. 31, 2011
Debt Instrument [Line Items]                
Debt Instrument, Face Amount   $ 9,161,000,000us-gaap_DebtInstrumentFaceAmount $ 6,993,000,000us-gaap_DebtInstrumentFaceAmount          
Senior Notes   9,161,000,000us-gaap_SeniorNotes 6,993,000,000us-gaap_SeniorNotes          
Debt Instrument, Convertible, Conversion Price   $ 14.62us-gaap_DebtInstrumentConvertibleConversionPrice1            
2018 Senior Notes [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Face Amount       600,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= sune_A2018SeniorNotesMember
       
Debt Instrument, Interest Rate, Stated Percentage       2.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sune_A2018SeniorNotesMember
       
Second Lien Credit Agreement [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Face Amount         200,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= sune_SecondLienCreditAgreementMember
     
Debt Instrument, Interest Rate, Effective Percentage     10.75%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= sune_SecondLienCreditAgreementMember
         
2021 Senior Notes [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Face Amount       600,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= sune_A2021SeniorNotesMember
       
Debt Instrument, Interest Rate, Stated Percentage       2.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= sune_A2021SeniorNotesMember
       
2019 Senior Notes [Member]                
Debt Instrument [Line Items]                
Senior Notes       550,000,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= sune_A2019SeniorNotesMember
       
Debt Instrument, Interest Rate, Effective Percentage       7.75%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= sune_A2019SeniorNotesMember
       
2018/2021 Senior Notes [Member]                
Debt Instrument [Line Items]                
Embedded Derivative, Fair Value of Embedded Derivative Liability           888,400,000us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability
/ us-gaap_DebtInstrumentAxis
= sune_A20182021SeniorNotesMember
   
SunEdisons Subsidiary One [Member]                
Debt Instrument [Line Items]                
Sales Leaseback Transaction, Capacity     124,500,000sune_SalesLeasebackTransactionCapacity
/ dei_LegalEntityAxis
= sune_SunedisonsSubsidiaryOneMember
         
Sale Leaseback Transaction, Amount Due under Financing Arrangement   123,600,000us-gaap_SaleLeasebackTransactionAmountDueUnderFinancingArrangement
/ dei_LegalEntityAxis
= sune_SunedisonsSubsidiaryOneMember
           
Sale and Lease Back Available Amount   1,000,000sune_SaleAndLeaseBackAvailableAmount
/ dei_LegalEntityAxis
= sune_SunedisonsSubsidiaryOneMember
           
SunEdisons Subsidiary Two [Member]                
Debt Instrument [Line Items]                
Sales Leaseback Transaction, Capacity             101,500,000sune_SalesLeasebackTransactionCapacity
/ dei_LegalEntityAxis
= sune_SunedisonsSubsidiaryTwoMember
 
Sale Leaseback Transaction, Amount Due under Financing Arrangement   96,700,000us-gaap_SaleLeasebackTransactionAmountDueUnderFinancingArrangement
/ dei_LegalEntityAxis
= sune_SunedisonsSubsidiaryTwoMember
           
Sale and Lease Back Available Amount   5,000,000sune_SaleAndLeaseBackAvailableAmount
/ dei_LegalEntityAxis
= sune_SunedisonsSubsidiaryTwoMember
           
2018/2021 Senior Notes [Member]                
Debt Instrument [Line Items]                
Proceeds from Issuance of Long-term Debt 1,167,300,000us-gaap_ProceedsFromDebtNetOfIssuanceCosts
/ us-gaap_StatementScenarioAxis
= sune_A20182021SeniorNotesMember
             
Solar Energy [Member] | Construction Financing Revolver [Member]                
Debt Instrument [Line Items]                
Line of Credit Facility, Amount Outstanding   $ 52,000,000us-gaap_LineOfCredit
/ us-gaap_DebtInstrumentAxis
= sune_ConstructionFinancingRevolverMember
/ us-gaap_StatementBusinessSegmentsAxis
= sune_SolarEnergyMember
           
Solar Energy [Member] | Interest rate margin in addition to LIBOR [Member] | Construction Financing Revolver [Member]                
Debt Instrument [Line Items]                
Line of Credit Facility, Interest Rate at Period End               0.00%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
/ us-gaap_DebtInstrumentAxis
= sune_ConstructionFinancingRevolverMember
/ us-gaap_StatementBusinessSegmentsAxis
= sune_SolarEnergyMember
/ us-gaap_StatementScenarioAxis
= sune_InterestratemargininadditiontoLIBORMember
Solar Energy [Member] | Defined prime rate plus margin [Member] | Construction Financing Revolver [Member]                
Debt Instrument [Line Items]                
Line of Credit Facility, Interest Rate at Period End               2.50%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
/ us-gaap_DebtInstrumentAxis
= sune_ConstructionFinancingRevolverMember
/ us-gaap_StatementBusinessSegmentsAxis
= sune_SolarEnergyMember
/ us-gaap_StatementScenarioAxis
= sune_DefinedprimerateplusmarginMember