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Diablo Energy Storage Fluence v.s. Diablo Energy Storage [Member] Fluence v.s. Diablo Energy Storage General and administrative General and Administrative Expense [Member] Schedule of Inventory, Current Schedule of Inventory, Current [Table Text Block] Equity Method Investments and Joint Ventures [Abstract] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Warranties issued and assumed in period Standard and Extended Product Warranty Accrual, Increase for Warranties Issued Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component [Domain] Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Financial Instrument [Axis] Financial Instrument [Axis] Current portion of borrowings against note receivable - pledged as collateral Long-Term Debt, Current Maturities Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items] Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Amount reclassified from accumulated other comprehensive (loss) income into earnings Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Entity Shell Company Entity Shell Company Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Change in estimates Standard Product Warranty Accrual, Change In Estimates Standard Product Warranty Accrual, Change In Estimates Class B Common Class B [Member] Title Trading Arrangement, Individual Title Supplier Finance Program [Table] Supplier Finance Program [Table] Statement [Table] Statement [Table] Interest expense Interest Expense, Debt Counterparty Name [Axis] Counterparty Name [Axis] Unrecognized tax benefits Unrecognized Tax Benefits Comprehensive loss attributable to non-controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest City Area Code City Area Code Current liabilities: Liabilities, Current [Abstract] Schedule of Cash Flow Hedging Instruments Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Derivatives and Hedging Derivatives, Methods of Accounting, Hedging Derivatives [Policy Text Block] Liquidated Damages Liquidated Damages [Abstract] Liquidated Damages Covenant excess availability percentage Debt Instrument, Covenant, Excess Availability, Line Cap Percentage Threshold Debt Instrument, Covenant, Excess Availability, Line Cap Percentage Threshold Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Advance payments Advance Payments, Current Advance Payments, Current Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Impact of foreign currency translation and cash flow hedges, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Total current assets Assets, Current Written notice period Continuing Involvement With Derecognized Transferred Financial Assets, Termination Notice Period Continuing Involvement With Derecognized Transferred Financial Assets, Termination Notice Period Statement of Cash Flows [Abstract] Surety bonds Surety Bond [Member] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Accruals and provisions Increase (Decrease) in Accrued Liabilities Leverage ratio Debt Instrument, Covenant, Net Leverage Ratio, Maximum Threshold Debt Instrument, Covenant, Net Leverage Ratio, Maximum Threshold Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Borrowings against note receivable - 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[Member] Siemens Industry, Inc. 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