Document and Entity Information [Abstract] Document Type Document Period End Date Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, Adress Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Country City Area Code Local Phone Number Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security Title of 12(g) Security Trading Symbol Security Exchange Name Entity Emerging Growth Company Entity Ex Transition Period Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag CONSOLIDATED BALANCE SHEETS Statement [Table] Legal Entity [Axis] Entity [Domain] Entity [Domain] Represents the information pertaining to Atieva, Inc. Atieva Inc. [Member] Atieva, Inc. Statement [Line Items] Income Tax [Line Items] Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash Cash Restricted Cash, Current Restricted cash, current portion Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable, net Short-term Investments Short-term investments Inventory, Net Inventory Total inventory Prepaid Expense, Current Prepaid expenses Total prepaid expenses Other Assets, Current Other current assets Total other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property, plant and equipment, net Deposits Assets, Noncurrent Security deposits Restricted Cash, Noncurrent Restricted cash, less current portion Other Assets, Noncurrent Other noncurrent assets Assets TOTAL ASSETS Liabilities and Equity [Abstract] LIABILITIES, CONVERTIBLE PREFERRED SHARES AND SHAREHOLDERS' DEFICIT Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Deferred Compensation Liability, Current Accrued compensation Other Accrued Liabilities, Current Other accrued liabilities Total other accrued liabilities Other Liabilities, Current Other liabilities Liabilities, Current Total current liabilities Carrying value as of the balance sheet date of contingent forward contract liability classified as noncurrent. Contingent Forward Contract Liability , Noncurrent Contingent forward contract liability Convertible Debt, Noncurrent Convertible preferred share warrant liability Other Liabilities, Noncurrent Other long-term liabilities Total other long-term liabilities Deferred Income Tax Liabilities, Net Income tax liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies (Note 10) Temporary Equity [Abstract] CONVERTIBLE PREFERRED SHARES Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests Ending balance Beginning balance Convertible preferred shares, $0.0001 par value; 400,510,507 and 286,632,918 shares authorized as of December 31, 2020 and 2019, respectively; 362,011,991 and 190,084,166 shares issued and outstanding as of December 31, 2020 and 2019, respectively; liquidation preference of $3,497,913, and $1,084,191 as of December 31, 2020 and 2019, respectively Stockholders' Equity Attributable to Parent [Abstract] SHAREHOLDERS' DEFICIT: Common Stock, Value, Issued Common shares, par value $0.0001; 450,000,098 and 335,130,459 shares authorized as of December 31, 2020 and 2019, respectively; 10,889,451 and 8,051,722 shares issued and outstanding as of December 2020 and 2019, respectively Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Ending balance Beginning balance Total shareholders' deficit Liabilities and Equity TOTAL LIABILITIES, CONVERTIBLE PREFERRED SHARES AND SHAREHOLDERS' DEFICIT Temporary Equity, Par or Stated Value Per Share Convertible preferred shares, par value Temporary Equity, Shares Authorized Convertible preferred shares authorized Convertible preferred shares, shares authorized Temporary Equity, Shares Issued Ending balance (in shares) Beginning balance (in shares) Convertible preferred shares, shares issued Temporary Equity, Shares Outstanding Convertible preferred shares, shares outstanding Convertible preferred shares outstanding Temporary Equity, Liquidation Preference Convertible preferred shares, liquidation amount Common Stock, Par or Stated Value Per Share Common Stock, Par Value Per Share Common Stock, Shares Authorized Common shares authorized Common shares, shares authorized Common Stock, Shares, Issued Common shares, shares issued Common Stock, Shares, Outstanding Common shares, shares outstanding CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS Class of Stock [Axis] Class Of Stock [Domain] Class of Stock [Domain] Series B Preferred Stock [Member] Series B convertible preferred shares Series C Preferred Stock [Member] Series C convertible preferred shares Revenue from Contract with Customer, Excluding Assessed Tax Revenue Cost of Revenue. Cost of revenue Gross Profit Gross profit Operating Expenses [Abstract] Operating expenses: Research and Development Expense Research and development Selling, General and Administrative Expense Selling, general and administrative Operating Expenses Total operating expenses Operating Income (Loss) Loss from operations Nonoperating Income (Expense) [Abstract] Other income (expense), net: Amount of expense (income) related to adjustment to fair value of forward contracts. Fair Value Adjustment of Forward Contracts Change in fair value of forward contracts Change in fair value of contingent forward contracts Reclassification from contingent forward contracts liability Fair Value Adjustment of Warrants Change in fair value of convertible preferred share warrant liability Loss related to fair value remeasurement of warrants Change in fair value of warrants Interest Expense Interest expense Other Nonoperating Income (Expense) Other income (expense) Nonoperating Income (Expense) Total other expense, net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Loss before provision (benefit) for income taxes Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Provision (benefit) for income taxes Provision (benefit) for income taxes Net Income (Loss) Attributable to Parent Operating losses, including net losses Net loss and comprehensive loss Net loss n/a Preferred Stock Dividends Income Statement Impact 2 Deemed contribution related to repurchase of Series B convertible preferred shares Preferred Stock Dividends, Income Statement Impact Deemed contribution related to repurchase of Series B convertible preferred shares n/a Preferred Stock Dividends Income Statement Impact 1 Deemed contribution related to repurchase of Series C convertible preferred shares Net Income (Loss) Available to Common Stockholders, Basic Net loss attributable to common shareholders Earnings Per Share, Basic and Diluted Net loss per share attributable to common shareholders - basic and diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Basic and Diluted Weighted average shares used in computing net loss per share attributable to common shareholders - basic and diluted (in shares) CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED SHARES AND SHAREHOLDERS' DEFICIT Forward Contract Indexed to Issuer's Equity, Type [Axis] Equity Components [Axis] Increase (Decrease) in Temporary Equity [Roll Forward] Value of stock classified as temporary equity repurchased during the period. Temporary Equity, Stock Repurchased During Period, Value Repurchase of Series C convertible preferred shares Carrying amount of shares repurchased Shares of stock classified as temporary equity repurchased during the period. Temporary Equity, Stock Repurchased During Period, Shares Repurchase of Series C convertible preferred shares (in shares) Value of stock classified as temporary equity extinguishment during the period. Temporary Equity, Early Extinguishment, Amount Extinguishment of Series C convertible preferred shares Temporary Equity, Stock Issued During Period, Value, New Issues Issuance of convertible preferred shares Shares of new stock classified as temporary equity issued during the period. Temporary Equity, Stock Issued During Period, Shares, New Issues Issuance of convertible preferred shares (in shares) Value of stock classified as temporary equity extinguishment and reclassification during the period. Temporary Equity, Early Extinguishment and Reclassification, Amount Extinguishment and reclassification of Series B convertible preferred shares Value of stock classified as temporary equity settlement during the period. Temporary Equity, Settlement Value Settlement of Series D contingent forward contract liability Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares, Outstanding Ending balance (in shares) Beginning balance (in shares) The amount of additional paid-in capital extinguishment and reclassification during the period. Additional Paid-In Capital Extinguishment And Reclassification Amount Extinguishment and reclassification of convertible preferred shares Adjustments to Additional Paid in Capital, Increase in Carrying Amount of Redeemable Preferred Stock Change in additional paid-in capital due to repurchase of convertible preferred shares Reclassifications of Temporary to Permanent Equity Extinguishment of Series C convertible preferred shares Stock Issued During Period, Value, Stock Options Exercised Exercise of share options Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Options exercised Exercise of share options (in shares) APIC, Share-based Payment Arrangement, Increase for Cost Recognition Share-based compensation CONSOLIDATED STATEMENTS OF CASH FLOWS Series D Preferred Stock [Member] Series D convertible preferred shares Series E Preferred Stock [Member] Series E convertible preferred shares Forward Contract Indexed To Issuers Equity Type [Domain] Forward Contract Indexed to Issuer's Equity, Type [Domain] Represents the information pertaining to Series D contingent forward contract liability. Series D Contingent Forward Contract Liability [Member] Series D contingent forward contract liability Represents the information pertaining to Series E contingent forward contract liability. Series E Contingent Forward Contract Liability [Member] Series E contingent forward contract liability Cash flows from operating activities Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Depreciation, Depletion and Amortization Depreciation and amortization expense Depreciation and amortization Share-based Payment Arrangement, Noncash Expense Share-based compensation Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Loss on disposal of property and equipment Amortization of Debt Discount (Premium) Amortization of debt discount from contingent forward contracts (Note 6) Amortization of debt discount Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventory Increase (Decrease) in Prepaid Expense Prepaid expenses Increase (Decrease) in Other Current Assets Other current assets Amount of increase (decrease) in other noncurrent assets and security deposits. Increase (Decrease) in Other Noncurrent Assets and Security Deposits Other noncurrent assets and security deposit Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Employee Related Liabilities Accrued compensation Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Other current liabilities and accrued liabilities Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Payments to Acquire Productive Assets Purchases of property, equipment, and software Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Proceeds from Convertible Debt Proceeds from the issuance of the Convertible Notes Repayments of Debt and Lease Obligation Payment for Capital leases Payments for Repurchase of Convertible Preferred Stock Repurchase of Series C convertible preferred shares Proceeds from Issuance of Convertible Preferred Stock Proceeds from issuance of shares Proceeds from issuance of convertible preferred shares Proceeds from Stock Options Exercised Proceeds from exercise of share options Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Net increase in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Ending cash, cash equivalents, and restricted cash Beginning cash, cash equivalents, and restricted cash Total cash, cash equivalents, and restricted cash, end of period Cash, Cash Equivalents, and Short-term Investments [Abstract] Reconciliation of cash, cash equivalents, and restricted cash Restricted Cash Restricted cash Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Interest Paid, Including Capitalized Interest, Operating and Investing Activities Cash paid for interest Noncash Investing and Financing Items [Abstract] Supplemental disclosure of non-cash investing and financing activity: Capital Expenditures Incurred but Not yet Paid Property and equipment included in accounts payable and accrued expense Fair Value of Assets Acquired Property and equipment acquired through capital leases The fair value of contingent forward contracts issued in noncash investing and financing activities. Contingent Forward Contracts Issued Issuance of contingent forward contracts The amount of extinguishment of series b convertible preferred shares included in additional paid-in capital. Extinguishment of Temporary Equity and Included in Additional Paid In Capital Extinguishment of Series B convertible preferred shares included in additional paid-in capital The amount of extinguishment of series b convertible preferred shares included in accrued liabilities. Extinguishment of Temporary Equity and Included in Accrued Liabilities Extinguishment of Series B convertible preferred shares included in accrued liabilities Settlement of Contingent Forward Contract Through Noncash Payments, Amount Settlement of Contingent Forward Contract Through Noncash Payments, Amount Contingent forward contract liability reclassified Amount of convertible notes converted through noncash transactions. Notes Converted Convertible Notes converted into Series D convertible preferred shares Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction Unamortized Convertible Notes debt issuance cost and debt discount converted into Series D convertible preferred shares Amount of accrued interest of convertible notes through noncash transactions. Conversion of Convertible Notes, Accrued Interest Accrued interest of Convertible Notes converted to Series D convertible preferred shares The amount of debt issuance costs that were reclassed during a noncash or partial noncash transaction. Reclassification from Deferred Financing Costs to Temporary Equity Deferred financing cost reclassed to convertible preferred shares DESCRIPTION OF BUSINESS Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] DESCRIPTION OF BUSINESS SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES BALANCE SHEETS COMPONENTS Supplemental Balance Sheet Disclosures [Text Block] BALANCE SHEETS COMPONENTS FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] FAIR VALUE OF FINANCIAL INSTRUMENTS CONVERTIBLE NOTES Schedule of Short-term Debt [Table] Short-term Debt [Line Items] The entire disclosure for convertible notes payable. Convertible Notes, Disclosure [Text Block] CONVERTIBLE NOTES No definition available. CONTINGENT FORWARD CONTRACTS The entire disclosure of contingent forward contracts. Contingent Forward Contracts [Text Block] CONTINGENT FORWARD CONTRACTS No definition available. CONVERTIBLE PREFERRED SHARE WARRANT LIABILITY The entire disclosure of convertible preferred share warrant liability. Convertible Preferred Share Warrant Liability [Text Block] CONVERTIBLE PREFERRED SHARE WARRANT LIABILITY No definition available. CONVERTIBLE PREFERRED SHARES AND SHAREHOLDERS' DEFICIT Schedule of Stock by Class [Table] Class of Stock [Line Items]