Document and Entity Information Document Information [Table] Class of Stock [Axis] Class of Stock [Domain] Class A ordinary shares Class A ordinary shares Class B ordinary shares Class A ordinary shares ADSs Entity Addresses, Address Type [Axis] Address Type [Domain] Business Contact [Member] Business Contact Document Information [Line Items] Document and Entity Information Document Type Document Registration Statement Document Annual Report Document Period End Date Document Transition Report Document Shell Company Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, City or Town Entity Address, Postal Zip Code Entity Address, Country Title of 12(b) Security Trading Symbol Security Exchange Name Contact Personnel Name City Area Code Local Phone Number Contact Personnel Email Address Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Document Accounting Standard Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag ICFR Auditor Attestation Flag Auditor Name Auditor Firm ID Auditor Location No Trading Symbol Flag CONSOLIDATED BALANCE SHEETS Statement [Table] Statement [Line Items] Statement Income Taxes ASSETS Assets, Current [Abstract] Current assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and cash equivalents Restricted Cash, Current Restricted cash Amount due from online payment platforms, within one year of the balance sheet date (or the normal operating cycle, whichever is longer). Receivables From Online Payment Platforms, Current Receivables from online payment platforms Short-Term Investments Short-term investments Short-term investments, Total Due from Related Parties, Current Amounts due from related parties Amounts due from related parties (i) Prepaid Expense and Other Assets, Current Prepayments and other current assets Total Assets, Current Total current assets Other Non-Current Asset Non-current assets Property, Plant and Equipment, Net Property, equipment and software, net Property, equipment and software, net Intangible Assets, Net (Excluding Goodwill) Intangible asset Intangible assets Operating Lease, Right-of-Use Asset Right-of-use assets Deferred Income Tax Assets, Net Deferred tax assets Other Assets, Noncurrent Other non-current assets Assets, Noncurrent Total non-current assets Assets Total Assets Liabilities and Equity [Abstract] LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities, Current [Abstract] Current liabilities Due to Related Parties, Current Amounts due to related parties Amounts due to related parties (including amounts due to related parties of the consolidated VIE and its subsidiaries without recourse to the primary beneficiary of RMB1,962,029 and RMB1,671,246 (US$242,308) as of December 31, 2021 and 2022, respectively) Carrying amount as of the balance sheet date of service fees received from merchants in advance of the provision of online marketplace services. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer). Advances To Customer and Deferred Revenue Current Customer advances and deferred revenues (including customer advances and deferred revenues of the consolidated VIE and its subsidiaries without recourse to the primary beneficiary of RMB1,158,738 and RMB1,369,573 (US$198,569) as of December 31, 2021 and 2022, respectively) Customer advances and deferred revenues Amount of payable to merchants in connection with the provision of online marketplace services. Payable To Merchants, Current Payable to merchants (including payable to merchants of the consolidated VIE and its subsidiaries without recourse to the primary beneficiary of RMB61,947,517 and RMB62,006,946 (US$8,990,162) as of December 31, 2021 and 2022, respectively) Payable to merchants Accounts Payable and Accrued Liabilities, Current Accrued expenses and other liabilities Total Accrued expenses and other liabilities (including accrued expenses and other liabilities of the consolidated VIE and its subsidiaries without recourse to the primary beneficiary of RMB9,360,166 and RMB11,817,208 (US$1,713,334) as of December 31, 2021 and 2022, respectively) Deposit Liability, Current Merchant deposits Merchant deposits (including merchant deposits of the consolidated VIE and its subsidiaries without recourse to the primary beneficiary of RMB13,360,409 and RMB14,681,913 (US$2,128,677) as of December 31, 2021 and 2022, respectively) Convertible Debt, Current Convertible bonds, current portion Operating Lease, Liability, Current Lease liabilities (including lease liabilities of the consolidated VIE and its subsidiaries without recourse to the primary beneficiary of RMB138,667 and RMB156,776 (US$22,730) as of December 31, 2021 and 2022, respectively) Lease liabilities Liabilities, Current Total current liabilities Liabilities, Noncurrent [Abstract] Non-current liabilities Non-current liabilities Convertible Debt, Noncurrent Convertible bonds Operating Lease, Liability, Noncurrent Lease liabilities (including lease liabilities of the consolidated VIE and its subsidiaries without recourse to the primary beneficiary of RMB305,068 and RMB290,412 (US$42,106) as of December 31, 2021 and 2022, respectively) Lease liabilities Deferred Income Tax Liabilities, Net Deferred tax liabilities (including deferred tax liabilities of the consolidated VIE and its subsidiaries without recourse to the primary beneficiary of RMB19,217 and nil as of December 31, 2021 and 2022, respectively) Deferred tax liabilities Other Liabilities, Noncurrent Other non-current liabilities Liabilities, Noncurrent Total non-current liabilities Liabilities Total liabilities Commitments and contingencies Stockholders' Equity Attributable to Parent [Abstract] Equity Shareholders' equity Common Stock, Value, Issued Class A ordinary shares (US$0.000005 par value; 77,300,000,000 shares authorized, 5,057,542,676 and 5,278,348,396 shares issued and outstanding as of December 31, 2021 and 2022, respectively) Common Shares Additional Paid in Capital Additional paid-in capital Statutory Accounting Practices, Statutory Capital and Surplus, Balance Statutory reserves Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive (loss)/income Accumulated other comprehensive income Retained Earnings (Accumulated Deficit) Accumulated deficit (Accumulated deficits)/retained earnings Stockholders' Equity Attributable to Parent Balance at end of the year Balance at beginning of the year Total shareholders' equity Liabilities and Equity Total liabilities and shareholders' equity Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated VIEs Common Stock, Par or Stated Value Per Share Ordinary shares, par value Common Stock, Shares Authorized Ordinary shares, shares authorized Common Stock, Shares, Issued Ordinary shares, issued Common Stock, Shares, Outstanding Balance at end (in shares) Balance at beginning (in shares) Ordinary shares, outstanding CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) Revenue from Contract with Customer, Excluding Assessed Tax Revenues (including services provided to a related party of nil, nil and RMB10,765 (US$1,561) for the years ended December 31, 2020, 2021 and 2022, respectively) Revenues Cost of Revenue Total costs of revenues Costs of revenues (including services received from related parties of RMB4,570,292, RMB5,166,381 and RMB5,353,661 (US$776,208) for the years ended December 31, 2020, 2021 and 2022, respectively) Gross Profit Gross profit Selling and Marketing Expense Sales and marketing expenses Sales and marketing expenses (including services received from a related party of RMB4,166,230, RMB2,857,063 and RMB2,004,654 (US$290,648) for the years ended December 31, 2020, 2021 and 2022, respectively) General and Administrative Expense General and administrative expenses Research and Development Expense Research and development expenses (including services received from related parties of RMB1,850,321, RMB604,605 and RMB356,789 (US$51,730) for the years ended December 31, 2020, 2021 and 2022, respectively) Operating Expenses Total operating expenses Operating Income (Loss) Operating (loss)/profit Investment Income, Interest Interest and investment income, net Interest income Interest Expense Interest expenses Interest expense Interest expense Foreign Currency Transaction Gain (Loss), before Tax Foreign exchange (gain)/loss Foreign exchange gain Foreign exchange gain/(loss) Other Nonoperating Income (Expense) Other income, net Other loss Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest (Loss)/profit before income tax and share of results of equity investees Income Tax Expense (Benefit) Income tax expenses Income tax expenses Income tax expenses Income (Loss) from Equity Method Investments Share of results of equity investees Share of results of equity investees Share of losses from subsidiaries, the VIE and subsidiaries of the VIE Net Income (Loss) Attributable to Parent Net Income(loss) Net (loss)/income Net Income (Loss) Available to Common Stockholders, Basic Net (loss)/income attributable to ordinary shareholders Earnings/ (Loss) Per Share (Loss)/ earnings per share: (Loss)/ earnings per share - basic Basic Basic net income (loss) per share (Loss)/ earnings per share -diluted Diluted Diluted net income (loss) per share Weighted Average Number of Shares Outstanding, Diluted [Abstract] Shares used in (loss)/ earnings per share computation: Denominator (in thousands of shares): Weighted-average number of ordinary shares outstanding - basic Basic Weighted-average number of ordinary shares outstanding - diluted Diluted Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive (loss)/income Other comprehensive income net of tax of nil Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Foreign currency translation difference, net of tax of nil OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Net change in unrealized losses on available-for-sale debt securities Unrealized losses on available-for-sale investments, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total other comprehensive (loss)/income Total other comprehensive (loss)/income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss Comprehensive (loss)/ income Income Statement Location [Axis] Income Statement Location [Domain] Costs of revenues Sales and marketing expenses Research and development expenses Revenue from Related Parties Services provided to related party Amount earned from related party transactions based on the services rendered. Services Received From Related party Services rendered from related party Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Other comprehensive income/(loss), net of tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Parent Foreign currency translation difference, tax CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY Equity Components [Axis] Equity Component [Domain] Common share Common share Additional paid in capital Additional paid in capital The information pertaining to statutory reserves. Statutory Reserves [Member] Statutory reserves Accumulated Other Comprehensive Income [Member] Accumulated other comprehensive income Accumulated Deficits (Accumulated deficits)/retained earnings Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Domain] Adjustments Cumulative effect of change in accounting principle Adjustment Adjusted balance Balance Balance at January 1, 2022 Increase (Decrease) in Stockholders' Equity [Roll Forward] Changes in equity Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity. Other Comprehensive Income Foreign Currency Transaction And Translation Adjustments Net Of Tax Portion Attributable To Parent Foreign currency translation difference The amount of conversion of convertible preferred shares to ordinary shares. Adjustments To Additional Paid In Capital Conversion Of Convertible Preferred Shares To Ordinary Shares Conversion of convertible preferred shares to ordinary shares Stock Issued During Period, Value, New Issues Follow-on offering Stock Issued During Period, Shares, New Issues Follow-on offering (in shares) Number of ordinary shares issued The amount of issuance of ordinary shares for private placement. Issuance of Value Ordinary Shares For Private Placement Issuance of ordinary shares for private placements The number of shares, issuance of ordinary shares for private placement. Issuance of Ordinary Shares For Private Placement Issuance of ordinary shares for private placements (in shares) Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt Equity component of convertible bonds Number of new values issued to depository bank during the period. Stock Issued During Period Values Issued To Depository Bank Shares issued to depository bank Number of new stock issued to depository bank during the period. Stock Issued During Period, Shares, Issued to Depository Bank Shares issued to depository bank (in shares) Value of stock related to Restricted Stock Units and Stock Option awards exercised during the period, net of the stock value of such awards forfeited. Exercise of share-based awards Exercise of share-based awards Number of shares exercised during the period related to Restricted Stock Units and Stock Option awards, net of any shares forfeited. Exercise of share-based awards (in shares) Exercise of share-based awards (in shares) Number of values used to settle under share based payment arrangement held by depository bank. Settlement Of Share Based Compensation With Values Held By Depository Bank Settlement of share-based compensation with shares held by depository bank Number of shares used to settle under share based payment arrangement held by depository bank. Settlement of Share-Based Compensation With Shares Held By Depository Bank Settlement of share-based compensation with shares held by depository bank (in shares) The amount of conversion of convertible bonds shares to ordinary shares. Adjustments To Additional Paid In Capital Conversion Of Convertible Bonds Shares To Ordinary Shares Conversion of the convertible bonds into ordinary shares The number of shares, conversion of convertible bonds shares to ordinary shares. Shares Conversion Of Convertible Bonds Shares To Ordinary Shares Conversion of the convertible bonds into ordinary shares (in shares) Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Share-based compensation The amount of increase (decrease) in stockholder's equity related to appropriation to statutory reserves. Appropriation to Statutory Reserves Appropriation to statutory reserves CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities [Abstract] CASH FLOW FROM OPERATING ACTIVITIES Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Net (loss)/income Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net (loss)/income to net cash provided by operating activities: Amount of expense (reversal of expense) for expected credit losses on receivables and investments. Provision for credit losses on investments Allowance for credit losses Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Deferred Income Tax Expense (Benefit) Deferred income tax, net Deferred income tax benefit Operating Lease, Right-of-Use Asset, Amortization Expense Amortization of right-of-use assets Interest Income, Operating Interest and investment gain, net Gain (Loss) on Disposition of Property Plant Equipment Loss/(gain) on disposal of property and equipment Share-based Compensation. Share-based compensation The amount of fair value change in investments. Investments Fair Value Adjustments Fair value change of investments Gain (Loss) on Extinguishment of Debt Gain on extinguishment of convertible bonds Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Receivables Receivables from online payment platforms Increase (Decrease) in Due from Related Parties Amounts due from related parties Increase (Decrease) in Prepaid Expense and Other Assets Prepayments and other current assets This represents Increase (Decrease) in customer advances and deferred revenue. Increase Decrease in Advances to Customers and Deferred Revenue Customer advances and deferred revenues Increase (Decrease) in Due to Related Parties Amounts due to related parties Amount of increase (decrease) in payables to merchants. Increase (Decrease) in Payables to Merchants Payable to merchants Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Accrued expenses and other liabilities Amount of increase (decrease) in merchant deposits. Increase (Decrease) in Merchant Deposits Merchant deposits Increase (Decrease) in Operating Lease Liability Lease liabilities Increase (Decrease) in Other Noncurrent Assets Other non-current assets Increase (Decrease) in Other Noncurrent Liabilities Other non-current liabilities