Document and Entity Information Document Information [Table] 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, Address Line Two Entity Address, City or Town Entity Address, Postal Zip Code Entity Address, Country Contact Personnel Name Country Region City Area Code Local Phone Number Contact Personnel Email Address Title of 12(b) Security Trading Symbol No Trading Symbol Flag Security Exchange Name Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Emerging Growth Company Document Accounting Standard Entity Shell Company Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Consolidated Balance Sheets Statement [Table] Statement [Line Items] Statement Balance Sheet Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash at bank and demand deposits Represents certificate of deposits or savings account held by a bank or other financial institution for a short-term specified period of time. These investments generally have original maturities of three months or more but less than a year. Time Deposits Short Term Time deposits-short term Time deposits Restricted Cash, Current Restricted cash Accounts Receivable, Net, Current Accounts receivable, net Inventory, Net Inventories, net Prepaid Expense and Other Assets, Current Prepayments and other current assets Prepayments and other current assets Short-term Investments. Short-term investments Disposal Group, Including Discontinued Operation, Assets, Current Assets held for sale Total current assets Assets, Current Total current assets Assets, Noncurrent [Abstract] Non-current assets: Property, Plant and Equipment, Net Property, equipment and software, net Net book value The cost of an acquired contractual arrangement associated with the use of land minus accumulated amortization. Land Use Right. Land use rights, net Operating Lease, Right-of-Use Asset Total right-of-use assets Operating lease right-of-use assets, net Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Deferred tax assets Represents certificate of deposits or savings account held by a bank or other financial institution for a long-term specified period of time. These investments generally have original maturities of more than a year. Time Deposits Long Term Time deposits-long term Time deposits Long-term Investments. Long-term investments Total Other Assets, Noncurrent Other long-term assets Total Disposal Group, Including Discontinued Operation, Assets, Noncurrent Assets held for sale Total non-current assets Assets, Noncurrent Total non-current assets Assets Total assets Total assets Liabilities and Equity [Abstract] Liabilities, Redeemable noncontrolling interests and Shareholders' equity Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable of the consolidated VIEs without recourse to the primary beneficiaries Accounts payable (including accounts payable of the consolidated VIEs without recourse to the primary beneficiaries of RMB909,449 and RMB846,893 as of December 31, 2018 and 2019, respectively) Employee-related Liabilities, Current Salary and welfare payables (including salary and welfare payables of the consolidated VIEs without recourse to the primary beneficiaries of RMB108,699 and RMB97,636 as of December 31, 2018 and 2019, respectively) Salary and welfare payables of the consolidated VIEs without recourse to the primary beneficiaries Taxes Payable, Current Taxes payable (including taxes payable of the consolidated VIEs without recourse to the primary beneficiaries of RMB84,118 and RMB122,179 as of December 31, 2018 and 2019, respectively) Total taxes payable Taxes payable of the consolidated VIEs without recourse to the primary beneficiaries Short-term Bank Loans and Notes Payable Short-term loans (including short-term loans of the consolidated VIEs without recourse to the primary beneficiaries of RMB129,900 and RMB197,420 as of December 31, 2018 and 2019, respectively) Short-term loans of the consolidated VIEs without recourse to the primary beneficiaries Deferred Revenue, Current Deferred revenue (including deferred revenue of the consolidated VIEs without recourse to the primary beneficiaries of RMB6,672,715 and RMB7,634,637 as of December 31, 2018 and 2019, respectively) Deferred revenue of the consolidated VIEs without recourse to the primary beneficiaries Accrued Liabilities, Current Accrued liabilities and other payables (including accrued liabilities and other payables of the consolidated VIEs without recourse to the primary beneficiaries of RMB1,865,978 and RMB1,919,549 as of December 31, 2018 and 2019, respectively) Total accrued liabilities and other payables Accrued liabilities and other payables of the consolidated VIEs without recourse to the primary beneficiaries Operating Lease, Liability, Current Short-term operating lease liabilities (including short-term operating lease liabilities of the consolidated VIEs without recourse to the primary beneficiaries of nil and RMB14,683 as of December 31, 2018 and 2019, respectively) Short-term operating lease liabilities of the consolidated VIEs without recourse to the primary beneficiaries Disposal Group, Including Discontinued Operation, Liabilities, Current Liabilities held for sale Total current liabilities Liabilities, Current Total current liabilities Liabilities, Noncurrent [Abstract] Non-current liabilities: Deferred Tax Liabilities, Gross Deferred tax liabilities Total Operating Lease, Liability, Noncurrent Long-term operating lease liabilities (including long-term operating lease liabilities of the consolidated VIEs without recourse to the primary beneficiaries of nil and RMB12,133 as of December 31, 2018 and 2019, respectively) Long-term operating lease liabilities of the consolidated VIEs without recourse to the primary beneficiaries Other Liabilities, Noncurrent Other long-term payable (including long-term payable of the consolidated VIEs without recourse to the primary beneficiaries of RMB7,500 and nil as of December 31, 2018 and 2019, respectively) Other long-term payable of the consolidated VIEs without recourse to the primary beneficiaries Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent Liabilities held for sale Total non-current liabilities Liabilities, Noncurrent Total non-current liabilities Liabilities Total liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies (See Note 22) Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount Redeemable noncontrolling interests Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Shareholders' equity: Common Stock, Value, Issued Ordinary shares, US$0.0001 par value: 1,000,300,000 shares authorized, 3,199,018 shares issued and outstanding as of December 31, 2018 and 3,228,531 shares issued and outstanding as of December 31, 2019 Additional Paid in Capital, Common Stock Additional paid-in capital Represents appropriations to certain non-distributable statutory reserves in accordance with laws applicable to the reporting entity, its subsidiaries and consolidated VIEs. The reporting entity and its subsidiaries have to make appropriations from its after-tax profit. Statutory Reserves Statutory reserves Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income/(loss) Retained Earnings (Accumulated Deficit) Retained earnings Stockholders' Equity Attributable to Parent NetEase, Inc.'s shareholders' equity Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling interests Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Balance Balance Total shareholders' equity Liabilities and Equity Total liabilities, redeemable noncontrolling interests and shareholders' equity Common Stock, Par or Stated Value Per Share Ordinary shares, US$0.0001 par value (in dollars per share) Common Stock, Shares Authorized Ordinary shares, shares authorized Common Stock, Shares, Issued Ordinary shares, shares issued Common Stock, Shares, Outstanding Balance (in shares) Balance (in shares) Ordinary shares, shares outstanding Consolidated Statements of Operations and Comprehensive Income Revenues [Abstract] Net revenues: Revenue recognition Revenue from Contract with Customer, Excluding Assessed Tax Total net revenues Net Revenues Cost of Goods and Services Sold Total cost of revenues Cost of revenues Gross Profit Gross profit Operating Expenses [Abstract] Operating expenses: Selling and Marketing Expense Selling and marketing expenses General and Administrative Expense General and administrative expenses Research and Development Expense Research and development expenses Operating Expenses Total operating expenses Operating Income (Loss) Operating profit Nonoperating Income (Expense) [Abstract] Other income/(expenses): Investment Income, Net Investment income/(losses), net Interest Income, Deposits with Financial Institutions Interest income, net Foreign Currency Transaction Gain (Loss), before Tax Exchange (losses)/gains Other Nonoperating Income (Expense) Other, net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income before tax Income Tax Expense (Benefit) Income tax Income tax expenses Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net income from continuing operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net loss/(income) from discontinued operations Net (loss)/income from discontinued operations Net (loss)/income from discontinued operations Net (loss)/income from discontinued operations attributable to NetEase, Inc's shareholders Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Net income Temporary Equity, Accretion to Redemption Value, Adjustment Accretion and deemed dividends in connection with repurchase of redeemable noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net (income)/loss attributable to noncontrolling interests and redeemable noncontrolling interests Net Income (Loss) Available to Common Stockholders, Basic Net income attributable to NetEase, Inc.'s shareholders Net Income (Loss) Available to Common Stockholders, Operations, Basic [Abstract] Including: Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic Net income from continuing operations attributable to NetEase, Inc.'s shareholders Net income from continuing operations attributable to NetEase, Inc's shareholders Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic Net (loss)/income from discontinued operations attributable to NetEase, Inc.'s shareholders Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Unrealized losses on available-for-sale securities, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Foreign currency translation adjustment Other Comprehensive Income (Loss), Net of Tax Total other comprehensive (loss)/income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Total comprehensive income Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest Comprehensive (income)/ loss attributable to noncontrolling interests and redeemable noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income attributable to NetEase, Inc.'s shareholders Earnings Per Share, Basic Net income/(loss) per share, basic (in CNY and dollars per share) Income (Loss) from Continuing Operations, Per Basic Share -Continuing operations (in CNY and dollars per share) Net income per share from continuing operations attributable to NetEase, Inc's shareholders, basic Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share -Discontinued operations (in CNY and dollars per share) Net (loss)/income per share from discontinued operations attributable to NetEase, Inc's shareholders, basic The amount of net income (loss) for the period per each American depositary share of common stock or unit outstanding during the reporting period. Earnings Per American Depositary Share, Basic Net income/(loss) per ADS, basic (in CNY and dollars per share) The amount of net income (loss) from continuing operations for the period per each American depositary share of common stock or unit outstanding during the reporting period. Earnings Per American Depositary Share, Continuing Operation, Basic -Continuing operations (in CNY and dollars per share) The amount of net income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation for the period per each American depositary share of common stock or unit outstanding during the reporting period. Earnings Per American Depositary Share, Discontinued Operations and Disposal of Discontinued Operations, Basic -Discontinued operations (in CNY and dollars per share) Earnings Per Share, Diluted Net income/(loss) per share, diluted (in CNY and dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share -Continuing operations (in CNY and dollars per share) Net income per share from continuing operations attributable to NetEase, Inc's shareholders, diluted Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share -Discontinued operations (in CNY and dollars per share) Net (loss)/income per share from discontinued operations attributable to NetEase, Inc's shareholders, diluted The amount of net income (loss) for the period available to each American depositary share of common stock or common unit outstanding during the reporting period and to each American depositary share or unit that would have been outstanding assuming the issuance of common American depositary shares or units for all dilutive potential American depositary common shares or units outstanding during the reporting period. Earnings Per American Depositary Share, Diluted Net income/(loss) per ADS, diluted (in CNY and dollars per share) The amount of net income (loss) from continuing operations for the period available to each American depositary share of common stock or common unit outstanding during the reporting period and to each American depositary share or unit that would have been outstanding assuming the issuance of common American depositary shares or units for all dilutive potential American depositary common shares or units outstanding during the reporting period. Earnings Per American Depositary Share, Continuing Operation, Diluted -Continuing operations (in CNY and dollars per share) The amount of net income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation for the period available to each American depositary share of common stock or common unit outstanding during the reporting period and to each American depositary share or unit that would have been outstanding assuming the issuance of common American depositary shares or units for all dilutive potential American depositary common shares or units outstanding during the reporting period. Earnings Per American Depositary Share, Discontinued Operations and Disposal of Discontinued Operations, Diluted -Discontinued operations (in CNY and dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted average number of ordinary shares outstanding, basic (in shares) Number of basic American depositary shares or units after adjustment, for contingently issuable American depositary shares or units and other American depositary shares or units not deemed outstanding, which is determined by relating the portion of time within a reporting period that American depositary shares or units have been outstanding to the total time in that period. Weighted Average Number of American Depositary Shares Outstanding, Basic Weighted average number of ADS outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted average number of ordinary shares outstanding, diluted (in shares) Weighted average number of ordinary shares outstanding, diluted The average number of American depositary shares or units issued and outstanding that is used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of the issuance of American depositary shares or units in the period. Weighted Average Number of Diluted American Depositary, Shares Outstanding Weighted average number of ADS outstanding, diluted (in shares) Consolidated Statements of Shareholders' Equity Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Ordinary shares Additional Paid In Capital [Member] Additional paid-in capital Treasury Stock [Member] Treasury stock Represents appropriations to certain non-distributable statutory reserves in accordance with laws applicable to the reporting entity. The reporting entity and its subsidiaries have to make appropriations from its after-tax profit. Statutory Reserves [Member] Statutory reserves Accumulated Other Comprehensive Income [Member] Accumulated other comprehensive income Retained Earnings [Member] Retained earnings Noncontrolling Interest [Member] Noncontrolling Interests Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative effect of changes in accounting principles related to revenue recognition and financial instruments Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Ordinary shares issued upon settlement of restricted share units Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Ordinary shares issued upon settlement of restricted share units (in shares) Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Share-based compensation Represents appropriations to certain non-distributable statutory reserves in accordance with laws applicable to the countries in which the reporting entity's subsidiaries and variable interest entities operate. Appropriation to statutory reserves Appropriation to statutory reserves The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest but excluding the portion attributable to the mezzanine classified noncontrolling interest. Profit Loss Excluding Net Income Attributable To Mezzanine Classified Noncontrolling Interest Net income attributable to NetEase, Inc. and noncontrolling interest shareholders Treasury Stock, Value, Acquired, Cost Method Repurchase of shares Value of shares repurchased Treasury Stock, Shares, Acquired Repurchase of shares (in shares) Shares repurchased (in shares) Treasury Stock, Retired, Cost Method, Amount Cancellation of treasury stock Treasury Stock, Shares, Retired Cancellation of treasury stock (in shares) Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Repurchase of noncontrolling interest and redeemable noncontrolling interests Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Net change in unrealized gains on available-for-sale securities Represents an increase in noncontrolling interest from injections of capital from non-controlling shareholders. Minority Interest Increase from Capital Contributions Capital injection in subsidiaries by noncontrolling interest shareholders Equity impact from conversion of preferred shares recognized as redeemable noncontrolling interests to ordinary shares. Conversion of Preferred Shares Recognized as Redeemable Noncontrolling Interests to Ordinary Shares Conversion of Youdao's preferred shares recognized as redeemable noncontrolling interests to ordinary shares Dividends, Common Stock, Cash Dividends to shareholders Cash dividend declared Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax Foreign currency translation adjustment The increase (decrease) in stockholders' equity from deconsolidation or disposal of subsidiaries during the period. Deconsolidation/ Disposal of Subsidiaries Deconsolidation of a subsidiary/Disposal of a subsidiary Amount of increase (decrease) in equity for accretion of redeemable noncontrolling interests. Accretion of Redeemable Noncontrolling Interests Accretion of redeemable noncontrolling interests Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, Depletion and Amortization Depreciation and amortization The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of equity investments and other financial instruments. Fair Value Change of Equity Investments and Other Financial Instruments Fair value change of equity security investments and other financial instruments Other than Temporary Impairment Losses, Investments Investment impairment Share-based Compensation. Share-based compensation cost Amount of expense (reversal of expense) for expected credit loss on accounts receivable, excluding discontinued operations. Accounts Receivable, Credit Loss Expense (Reversal), Continuing Operations Allowance for/(Reversal of) doubtful accounts Gain (Loss) on Disposition of Property Plant Equipment Loss/(Gain) on disposal of property, equipment and software Foreign Currency Transaction Gain (Loss), Unrealized Unrealized exchange losses/(gains) Amount of gain (loss) on sale or disposal of investments, business and subsidiaries. Gain (Loss) on disposal of Investments, Business and Subsidiaries Gain on disposal of long-term investments, business and subsidiaries Deferred Income Taxes and Tax Credits Deferred income taxes Income (Loss) from Equity Method Investments Net equity share of losses/(gains) from equity method investees Equity share of earnings (losses) Amount of expense (income) related to adjustment to fair value of short-term investments. Fair value changes of short-term investments Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventories Increase (Decrease) in Prepaid Expense and Other Assets Prepayments and other assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Employee Related Liabilities Salary and welfare payables