1001 - Document - Cover Page link:presentationLink link:definitionLink link:calculationLink 1002 - Statement - Consolidated Balance Sheets link:presentationLink link:definitionLink link:calculationLink 1003 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 1004 - Statement - Consolidated Statements of Operations link:presentationLink link:definitionLink link:calculationLink 1005 - Statement - Consolidated Statements Of Comprehensive Income link:presentationLink link:definitionLink link:calculationLink 1006 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 1007 - Statement - Consolidated Statements of Changes in Equity link:presentationLink link:definitionLink link:calculationLink 1008 - Statement - Consolidated Statements of Changes in Equity (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 1009 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 999001 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure link:presentationLink link:definitionLink link:calculationLink 999002 - Disclosure - Organization and Principal Activities link:presentationLink link:definitionLink link:calculationLink 999003 - Disclosure - Significant Accounting Policies link:presentationLink link:definitionLink link:calculationLink 999004 - Disclosure - Business Acquisitions link:presentationLink link:definitionLink link:calculationLink 999005 - Disclosure - Short-Term Investments link:presentationLink link:definitionLink link:calculationLink 999006 - Disclosure - Prepaid Expenses and Other Current Assets, Net link:presentationLink link:definitionLink link:calculationLink 999007 - Disclosure - Property and Equipment, Net link:presentationLink link:definitionLink link:calculationLink 999008 - Disclosure - Land Use Rights, Net link:presentationLink link:definitionLink link:calculationLink 999009 - Disclosure - Intangible Assets, Net link:presentationLink link:definitionLink link:calculationLink 999010 - Disclosure - Goodwill, Net link:presentationLink link:definitionLink link:calculationLink 999011 - Disclosure - Long-Term Investments, Net link:presentationLink link:definitionLink link:calculationLink 999012 - Disclosure - Fair Value Measurement link:presentationLink link:definitionLink link:calculationLink 999013 - Disclosure - Accrued Expenses and Other Current Liabilities link:presentationLink link:definitionLink link:calculationLink 999014 - Disclosure - Lease link:presentationLink link:definitionLink link:calculationLink 999015 - Disclosure - Unsecured Senior Notes link:presentationLink link:definitionLink link:calculationLink 999016 - Disclosure - Common Shares and Treasury Stock link:presentationLink link:definitionLink link:calculationLink 999017 - Disclosure - Share-Based Compensation link:presentationLink link:definitionLink link:calculationLink 999018 - Disclosure - Income Taxes link:presentationLink link:definitionLink link:calculationLink 999019 - Disclosure - Net Income Per Share link:presentationLink link:definitionLink link:calculationLink 999020 - Disclosure - Related-Parties Transactions link:presentationLink link:definitionLink link:calculationLink 999021 - Disclosure - Commitments and Contingencies link:presentationLink link:definitionLink link:calculationLink 999022 - Disclosure - Segment Information link:presentationLink link:definitionLink link:calculationLink 999023 - Disclosure - Mainland China Contribution Plan link:presentationLink link:definitionLink link:calculationLink 999024 - Disclosure - Statutory Reserves link:presentationLink link:definitionLink link:calculationLink 999025 - Disclosure - Restricted Net Assets link:presentationLink link:definitionLink link:calculationLink 999026 - Disclosure - Subsequent Events link:presentationLink link:definitionLink link:calculationLink 999027 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:definitionLink link:calculationLink 999028 - Disclosure - Organization and Principal Activities (Tables) link:presentationLink link:definitionLink link:calculationLink 999029 - Disclosure - Significant Accounting Policies (Tables) link:presentationLink link:definitionLink link:calculationLink 999030 - Disclosure - Business Acquisitions (Tables) link:presentationLink link:definitionLink link:calculationLink 999031 - Disclosure - Short-Term Investments (Tables) link:presentationLink link:definitionLink link:calculationLink 999032 - Disclosure - Prepaid Expenses and Other Current Assets, Net (Tables) link:presentationLink link:definitionLink link:calculationLink 999033 - Disclosure - Property and Equipment, Net (Tables) link:presentationLink link:definitionLink link:calculationLink 999034 - Disclosure - Land Use Rights, Net (Tables) link:presentationLink link:definitionLink link:calculationLink 999035 - Disclosure - Intangible Assets, Net (Tables) link:presentationLink link:definitionLink link:calculationLink 999036 - Disclosure - Goodwill, Net (Tables) link:presentationLink link:definitionLink link:calculationLink 999037 - Disclosure - Long-Term Investments, Net (Tables) link:presentationLink link:definitionLink link:calculationLink 999038 - Disclosure - Fair Value Measurement (Tables) link:presentationLink link:definitionLink link:calculationLink 999039 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables) link:presentationLink link:definitionLink link:calculationLink 999040 - Disclosure - Lease (Tables) link:presentationLink link:definitionLink link:calculationLink 999041 - Disclosure - Common Shares and Treasury Stock (Tables) link:presentationLink link:definitionLink link:calculationLink 999042 - Disclosure - Share-Based Compensation (Tables) link:presentationLink link:definitionLink link:calculationLink 999043 - Disclosure - Income Taxes (Tables) link:presentationLink link:definitionLink link:calculationLink 999044 - Disclosure - Net Income Per Share (Tables) link:presentationLink link:definitionLink link:calculationLink 999045 - Disclosure - Related-Parties Transactions (Tables) link:presentationLink link:definitionLink link:calculationLink 999046 - Disclosure - Commitments and Contingencies (Tables) link:presentationLink link:definitionLink link:calculationLink 999047 - Disclosure - Segment Information (Tables) link:presentationLink link:definitionLink link:calculationLink 999048 - Disclosure - Organization and Principal Activities - Details of Company's Major Subsidiaries and VIEs and Its Major Subsidiaries (Detail) link:presentationLink link:definitionLink link:calculationLink 999049 - Disclosure - Organization and Principal Activities - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999050 - Disclosure - Organization and Principal Activities - Balances and Amounts of Company's WFOEs and VIEs (Detail) link:presentationLink link:definitionLink link:calculationLink 999051 - Disclosure - Significant Accounting Policies - Estimated Useful Lives of Assets (Detail) link:presentationLink link:definitionLink link:calculationLink 999052 - Disclosure - Significant Accounting Policies - Summary of Estimated Useful Lives of Intangible Assets (Detail) link:presentationLink link:definitionLink link:calculationLink 999053 - Disclosure - Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999054 - Disclosure - Significant Accounting Policies - Additional Information (Detail) Alternate link:presentationLink link:definitionLink link:calculationLink 999055 - Disclosure - Business Acquisitions - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999056 - Disclosure - Business Acquisitions - Purchase Price Allocation (Detail) link:presentationLink link:definitionLink link:calculationLink 999057 - Disclosure - Business Acquisitions - Purchase Price Allocation (Parenthetical) (Detail) link:presentationLink link:definitionLink link:calculationLink 999058 - Disclosure - Short-Term Investments - Summary of Short-Term Investments (Detail) link:presentationLink link:definitionLink link:calculationLink 999059 - Disclosure - Prepaid Expenses and Other Current Assets, Net - Components of Prepaid Expenses and Other Current Assets, Net (Detail) link:presentationLink link:definitionLink link:calculationLink 999060 - Disclosure - Property and Equipment, Net - Summary of Property and Equipment, Net (Detail) link:presentationLink link:definitionLink link:calculationLink 999061 - Disclosure - Property and Equipment, Net - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999062 - Disclosure - Land Use Rights, Net - Land Use Rights, Net (Detail) link:presentationLink link:definitionLink link:calculationLink 999063 - Disclosure - Land Use Rights, Net - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999064 - Disclosure - Intangible Assets, Net - Schedule of Intangible Assets, Net (Detail) link:presentationLink link:definitionLink link:calculationLink 999065 - Disclosure - Intangible Assets, Net - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999066 - Disclosure - Goodwill, Net - Schedule of Goodwill, Net (Detail) link:presentationLink link:definitionLink link:calculationLink 999067 - Disclosure - Goodwill, Net - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999068 - Disclosure - Long Term Investments, Net - Schedule of Long Term Investments, Net (Detail) link:presentationLink link:definitionLink link:calculationLink 999069 - Disclosure - Long Term Investments, Net - Schedule of Long Term Investments, Net (Parenthetical) (Detail) link:presentationLink link:definitionLink link:calculationLink 999070 - Disclosure - Long Term Investments, Net - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999071 - Disclosure - Fair Value Measurement - Schedule of Available-for-Sale Securities Included in Long Term Investments Measured and Recorded at Fair Value on Recurring Basis (Detail) link:presentationLink link:definitionLink link:calculationLink 999072 - Disclosure - Fair Value Measurement - Schedule of Available-for-Sale Securities Included in Long Term Investments Measured and Recorded at Fair Value on Recurring Basis (Parenthetical) (Detail) link:presentationLink link:definitionLink link:calculationLink 999073 - Disclosure - Fair Value Measurement - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999074 - Disclosure - Fair Value Measurement - Reconciliation of The Fair Value Measurements of Assets And Liabilities Using Significant Unobservable Inputs (level 3) (Detail) link:presentationLink link:definitionLink link:calculationLink 999075 - Disclosure - Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) link:presentationLink link:definitionLink link:calculationLink 999076 - Disclosure - Lease - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999077 - Disclosure - Lease - Summary of Supplemental Cash Flow Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999078 - Disclosure - Lease - Summary of Maturity Analysis of Annual Undiscounted Cash Flows (Detail) link:presentationLink link:definitionLink link:calculationLink 999079 - Disclosure - Unsecured Senior Notes - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999080 - Disclosure - Common Shares and Treasury Stock - Movement of the outstanding common shares and treasury stock (Detail) link:presentationLink link:definitionLink link:calculationLink 999081 - Disclosure - Common Shares and Treasury Stock - Movement of the outstanding common shares and treasury stock (Parenthetical) (Detail) link:presentationLink link:definitionLink link:calculationLink 999082 - Disclosure - Common Shares and Treasury Stock - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999083 - Disclosure - Share-Based Compensation - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999084 - Disclosure - Share-Based Compensation - Summary of NES Activities under 2006 and 2016 Share Incentive Plan (Detail) link:presentationLink link:definitionLink link:calculationLink 999085 - Disclosure - Share-Based Compensation - Summary of Movements of Share Options Under The Koolearn Post-IPO Share Option II (Detail) link:presentationLink link:definitionLink link:calculationLink 999086 - Disclosure - Share-Based Compensation - Summary of Movements of Share Awards Under the East Buy Schemes (Detail) link:presentationLink link:definitionLink link:calculationLink 999087 - Disclosure - Income Taxes - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999088 - Disclosure - Income Taxes - Components of Provision for Income Taxes (Detail) link:presentationLink link:definitionLink link:calculationLink 999089 - Disclosure - Income Taxes - Components of Group's Deferred Tax Assets and Liabilities (Detail) link:presentationLink link:definitionLink link:calculationLink 999090 - Disclosure - Income Taxes - Reconciliation of Effective Tax Rates from 25% Statutory Tax Rates (Detail) link:presentationLink link:definitionLink link:calculationLink 999091 - Disclosure - Net Income Per Share - Computation of Basic and Diluted Net Income/(Loss) Per Share (Detail) link:presentationLink link:definitionLink link:calculationLink 999092 - Disclosure - Related-Parties Transactions - Balances and Transaction with Related Parties (Detail) link:presentationLink link:definitionLink link:calculationLink 999093 - Disclosure - Related-Parties Transactions - Balances and Transaction with Related Parties (Parenthetical) (Detail) link:presentationLink link:definitionLink link:calculationLink 999094 - Disclosure - Commitments and Contingencies - Future Minimum Capital Commitments under Non-Cancelable Construction and Investments (Detail) link:presentationLink link:definitionLink link:calculationLink 999095 - Disclosure - Segment Information - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999096 - Disclosure - Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) link:presentationLink link:definitionLink link:calculationLink 999097 - Disclosure - Segment Information - Summary of Depreciation and Amortization Expenses (Detail) link:presentationLink link:definitionLink link:calculationLink 999098 - Disclosure - Segment Information - Summary of Material Unallocated Items (Detail) link:presentationLink link:definitionLink link:calculationLink 999099 - Disclosure - Mainland China Contribution Plan - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999100 - Disclosure - Statutory Reserves - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999101 - Disclosure - Restricted Net Assets - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999102 - Disclosure - Subsequent Events - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink Cover [Abstract] Document Information [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Stock [Member] Common Shares [Member] ADR [Member] Entity Addresses, Address Type [Axis] Address Type [Domain] Business Contact [Member] Document Information [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Trading Symbol Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Current Reporting Status Entity Filer Category Entity Voluntary Filers Entity Shell Company Entity Emerging Growth Company Entity Interactive Data Current Entity Common Stock, Shares Outstanding Document Accounting Standard Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, City or Town Entity Address, Postal Zip Code Entity Address, Country Contact Personnel Name Contact Personnel Email Address Title of 12(b) Security Security Exchange Name Document Annual Report Document Transition Report Document Shell Company Report Document Registration Statement Entity File Number City Area Code Local Phone Number ICFR Auditor Attestation Flag Auditor Name Auditor Firm ID Auditor Location Document Financial Statement Error Correction [Flag] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Deposits Assets, Current Term deposits, current Debt Securities, Held-to-maturity, Fair Value Short-term investments Short-term investments Accounts Receivable, Net, Current Accounts receivable, net of allowance of US$1,579 and US$3,389 as of May 31, 2025 and 2026, respectively Inventory, Net Inventory, net Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets, net of allowance of US$713 and US$784 as of May 31, 2025 and 2026, respectively Prepaid expenses and other current assets Other Receivables, Net, Current Amounts due from related parties, current Amounts due from related parties, current Amounts due from related parties, current Assets, Current Total current assets Total current assets Restricted Cash, Current Restricted cash, current Restricted Cash and Investments, Noncurrent Restricted cash, non-current Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Land Use Right Noncurrent Land use rights, net Land use rights, net Land use right noncurrent. Other Receivable, after Allowance for Credit Loss, Noncurrent Amounts due from related parties, non-current Amounts due from related parties, non-current Long Term Deposits Long-term deposits Long term deposits. Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Intangible assets Goodwill Goodwill, net Goodwill Goodwill, net Long-term Investments Long-term investments, net (including available-for-sale investments of US$130,539 and US$150,788 as of May 31, 2025 and 2026, respectively) Long term investments Deferred Income Tax Assets, Net Deferred tax assets, non-current, net Total deferred tax assets, net Other Assets, Noncurrent Other non-current assets Other non-current assets Assets Total assets Total assets Operating Lease, Right-of-Use Asset Right-of-use assets Operating lease right of use assets Deposits Assets, Noncurrent Term deposits, non-current Liabilities and Equity [Abstract] LIABILITIES AND EQUITY Stockholders' Equity Attributable to Parent [Abstract] Equity Common Stock, Value, Issued Common shares (US$0.001 par value; 3,000,000,000 and shares authorized as of May 31, 2025 and 2026; 1,714,218,870 and 1,712,060,870 shares issued as of May 31, 2025 and 2026; 1,580,288,613 and 1,549,068,783 shares outstanding as of May 31, 2025 and 2026, respectively) Additional Paid in Capital, Common Stock Additional paid-in capital Statutory Accounting Practices, Statutory Capital and Surplus, Balance Statutory reserves Retained Earnings (Accumulated Deficit) Retained earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive (loss)/income Stockholders' Equity Attributable to Parent Total New Oriental Education & Technology Group Inc. shareholders' equity Stockholders' Equity Attributable to Noncontrolling Interest Non-controlling interests Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total equity Balance Balance Treasury Stock, Common, Value Treasury stock Commitments and Contingencies Commitments and contingencies (Note 20) Liabilities and Equity Total liabilities and equity Liabilities [Abstract] Liabilities including amounts of the consolidated variable interest entities without recourse to the Company (Note 2) Deferred Tax and Other Liabilities, Noncurrent Deferred tax liabilities (including deferred tax liabilities of the consolidated variable interest entities without recourse to the Company of US$13,956 and US$13,826 as of May 31, 2025 and 2026, respectively) Liabilities Total liabilities Liabilities, Current [Abstract] Current liabilities Accounts Payable, Current Accounts payable (including accounts payable of the consolidated variable interest entities without recourse to the Company of US$79,890 and US$126,153 as of May 31, 2025 and 2026, respectively) Accrued Liabilities, Current Accrued expenses and other current liabilities (including accrued expenses and other current liabilities of the consolidated variable interest entities without recourse to the Company of US$800,716 and US$912,317 as of May 31, 2025 and 2026, respectively) Total Accrued Income Taxes, Current Income taxes payable (including income taxes payable of the consolidated variable interest entities without recourse to the Company of US$114,618 and US$139,837 as of May 31, 2025 and 2026, respectively) Other Liabilities, Current Amounts due to related parties (including amounts due to related parties of the consolidated variable interest entities without recourse to the Company of US$405 and US$88 as of May 31, 2025 and 2026, respectively) Amounts due to related parties, current Deferred Revenue, Current Deferred revenue (including deferred revenue of the consolidated variable interest entities without recourse to the Company of US$1,951,555 and US$2,236,560 as of May 31, 2025 and 2026, respectively) Liabilities, Current Total current liabilities Total current liabilities Operating Lease, Liability, Current Operating lease liabilities, current (including operating lease liabilities, current of the consolidated variable interest entities without recourse to the Company of US$ 251,600 and US$280,888 as of May 31, 2025 and 2026, respectively) Dividends Payable, Current Dividend payable (including dividend payable of the consolidated variable interest entities without recourse to the Company of nil and nil as of May 31, 2025 and 2026, respectively) Operating Lease, Liability, Noncurrent Operating lease liabilities, non-current (including operating lease liabilities, non-current of the consolidated variable interest entities without recourse to the Company of US$529,550 and US$558,321 as of May 31, 2025 and 2026, respectively) Unsecured Debt Unsecured senior notes (including unsecured senior notes of the consolidated variable interest entities without recourse to the Company of nil and nil as of May 31, 2025 and 2026, respectively) Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Domain] Related Party [Member] Allowance for Doubtful Accounts Receivable, Current Accounts receivable, allowance Allowance for Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets, allowance Allowance for Prepaid Expenses and Other Current Assets Accounts Payable Consolidated Vies Without Recourse Accounts payable, consolidated variable interest entity without recourse Accounts payable consolidated VIEs without recourse. Accrued Expenses And Other Current Liabilities Consolidated Vies Without Recourse Accrued expenses and other current liabilities, consolidated variable interest entity without recourse Accrued expenses and other current liabilities consolidated VIEs without recourse. Income Taxes Payable Consolidated V I Es Without Recourse Income taxes payable, consolidated variable interest entity without recourse Income taxes payable consolidated VIEs without recourse. Amounts Due To Related Parties Consolidated Vies Without Recourse Amounts due to related parties, consolidated variable interest entity without recourse Amounts due to related parties consolidated VIEs without recourse. Deferred Revenue Consolidated Vies Without Recourse Deferred revenue, consolidated variable interest entity without recourse Deferred revenue consolidated VIEs without recourse. Deferred Tax Liabilities Noncurrent Without Recourse Deferred tax liabilities, non-current consolidated variable interest entity without recourse Deferred tax liabilities noncurrent without recourse. Common Stock, Par or Stated Value Per Share Common stock, par value Common shares, par value Common Stock, Shares Authorized Common stock, shares authorized Common stock shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Operating Lease Liabilitycurrent consolidated variable interest entity without recourse Operating Lease Liability-current, consolidated variable interest entity without recourse Operating Lease Liability-current, consolidated variable interest entity without recourse. Operating Lease Liability non current consolidated variable interest entity without recourse Operating Lease Liability non current consolidated variable interest entity without recourse Operating lease liability non current , consolidated variable interest entity without recourse Senior Long Term Notes Consolidated Variable Interest Entity Without Recourse Unsecured senior notes non current, consolidated variable interest entities without recourse Senior long term notes consolidated variable interest entity without recourse. Debt Securities, Available-for-Sale Available for sale securities non current Available-for-sale investments Available for sale investments at fair value Dividends Payable Consolidated V I Es Without Recourse Dividend payable (including dividend payable of the consolidated variable interest entities without recourse Dividends payable consolidated VIEs without recourse. Income Statement [Abstract] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Service [Member] Net service revenues [Member] Product [Member] Net product revenues [Member] Costs and Expenses [Abstract] Operating cost and expenses Cost of Goods and Services Sold Cost of revenues Selling and Marketing Expense Selling and marketing General and Administrative Expense General and administrative Costs and Expenses Total operating cost and expenses Unallocated corporate expenses Goodwill and Intangible Asset Impairment Impairment loss of goodwill Basic And Diluted Earnings Per Share [Abstract] Net income per common share (Note 18) Net income/(loss) per common share Basic and diluted earnings per share. Income (Loss) from Continuing Operations, Per Basic Share - Basic - Basic (US$) Income (Loss) from Continuing Operations, Per Diluted Share - Diluted - Diluted (US$) Basic And Diluted Earnings Per Share Other Disclosures [Abstract] Weighted average shares used in calculating basic and diluted net income per common share Basic and diluted earnings per share other disclosures. Weighted Average Number of Shares Outstanding, Basic - Basic Weighted average common shares outstanding-basic Weighted Average Number of Shares Outstanding, Diluted - Diluted Weighted average common shares outstanding-diluted Income Tax Expense (Benefit), Continuing Operations [Abstract] Provision for income taxes: Current Income Tax Expense (Benefit) Current PRC Deferred Income Tax Expense (Benefit) Deferred PRC Income Tax Expense (Benefit) Provision for income taxes Provision for income taxes Total provision for income taxes Provision for income taxes Income (Loss) from Equity Method Investments Loss from equity method investments Loss from equity method investments Loss from equity method investments Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Net income Net income Assessable profit Net Income (Loss) Attributable to Noncontrolling Interest Less: Net income attributable to non-controlling interests Net income attributable to New Oriental Education & Technology Group Inc.'s shareholders Net income Net income attributable to New Oriental Education & Technology Group Inc.'s shareholders-basic (US$ in thousands) Nonoperating Income (Expense) [Abstract] Other income/(expense) Investment Income, Interest Interest income Interest income Realized Investment Gains (Losses) Realized gain from long-term investments Gain On Sale Of Equity Investments Impairment of Long Term Investments Impairment loss from long-term investments Impairment loss from long-term investments Impairment of long term investments. Miscellaneous Income Expense Net Miscellaneous income/(expense), net The net amount of miscellaneous other income and expense items and non-operating income and expense items. Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income before income taxes and loss from equity method investments Income before income taxes and loss from equity method investments Interest Expense Interest expense Loss Arising From Change In Fair Value Of Long Term Invesments Gain/(loss) from fair value change of investments Loss Arising From Change In Fair Value Of Long Term Invesments Revenues [Abstract] Net revenues Revenues Net revenues Revenues Net revenues Operating Income (Loss) Operating income Segment operating income/(loss) Statement of Comprehensive Income [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive (loss)/income, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Foreign currency translation adjustment Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax Unrealized (loss)/gain on available-for-sale investments, net of tax effect of US$6,191, US$1,418 and US$50 for the years ended May 31, 2024, 2025 and 2026, respectively Unrealized gain (loss) on available-for-sale investments, net of tax effect of US$6,191, US$1,418 and US$50 Other Comprehensive Income (Loss), Net of Tax Other comprehensive (loss)/income, net of tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income attributable to New Oriental Education & Technology Group Inc.'s shareholders Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax Unrealized gain/(loss) on available-for-sale investments, tax effect Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Treasury Stock, Common [Member] Treasury Stock [Member] AOCI Attributable to Parent [Member] Accumulated other comprehensive (loss)/income [Member] Statutory Reserve [Member] Statutory Reserves [Member] Statutory reserve. Retained Earnings [Member] Retained Earnings [Member] Parent [Member] Total New Oriental Education & Technology Group Inc. Shareholders' Equity [Member] Noncontrolling Interest [Member] Non-controlling Interests [Member] Shares, Outstanding Balance, shares Balance, shares Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Share-based compensation expenses Statutory Accounting Transfers To Appropriated Retained Earnings Transfer to statutory reserves The element represented the equity transfer from retained earnings to statutory reserves during the period. Stock Repurchased During Period, Value Share repurchase Stock repurchased during period, value Value of stock that has been repurchased during the period Stock Repurchase During Period Shares Share repurchase, (shares) Shares repurchase Number of shares that have been repurchased during the period  Stock repurchase during period shares. Purchase Of Noncontrolling interests Purchase of non-controlling interests (Note 2) Purchase Of Noncontrolling interests. Shares Vested During Period Value Non Vested Equity Shares Vested NES Shares vested during period value non vested equity shares. Shares Vested During Period Shares Non Vested Equity Shares Vested NES, (shares) Shares vested during period shares non vested equity shares. Exercise Of Share Options In East Buy Exercise of share options in East Buy Exercise of share options in east buy. Dividends Dividends Dividends Treasury Stock, Retired, Par Value Method, Amount Cancellation of treasury stock Dividends [Axis] Dividends [Axis] Dividends [Domain] Dividends [Domain] Statement of Cash Flows [Abstract] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities Proceeds from Stock Options Exercised Proceeds from issuances of common shares upon exercise of share options Payments Related to Tax Withholding for Share-based Compensation Cash paid for employees' individual income taxes on withheld shares from exercise of NES Payments of Dividends Cash paid for dividend Payments for Repurchase of Redeemable Noncontrolling Interest Purchase of non-controlling interests Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Net cash used in financing activities Payment for Contingent Consideration Liability, Financing Activities Payments made after business acquisitions Payments for Repurchase of Common Stock Cash paid for shares repurchase Payments For Repurchase and Redemtion Of Unsecured Senior Notes Repurchase and redeem of unsecured senior notes Payments for repurchase and redemtion of unsecured senior notes. Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities Payments for Other Deposits Purchase of term deposits Proceeds from Other Deposits Proceeds from maturity of term deposits Payments to Acquire Short-term Investments Payments for short-term investments Proceeds from Maturities, Prepayments and Calls of Short-term Investments Proceeds from maturity of short-term investments Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Payments For Land Use Rights Payment for land use rights Payments For Land Use Rights Payments to Fund Long-term Loans to Related Parties Loans provided to related parties Loans provided to related parties Payment towards loans to related parties Deconsolidation of Subsidiaries Deconsolidation of subsidiaries Deconsolidation of subsidiaries. Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net cash used in investing activities Payments to Acquire Long-term Investments Payments for long-term investments Payments made to acquire long term investments Proceeds from Sale of Long-term Investments Proceeds from disposal of long-term investments Proceeds from Sale of Property, Plant, and Equipment Proceeds from disposal of property and equipment Proceeds from Limited Partnership Investments Return of investments from equity method investees 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 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 and Other Assets Prepaid expenses and other current assets Increase (Decrease) in Due from Related Parties Amounts due from related parties Increase Decrease In Long Term Deposits Long-term deposits Increase decrease in long term deposits. Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Accrued expenses and other current liabilities Increase (Decrease) in Income Taxes Payable Income taxes payable Increase (Decrease) in Due to Related Parties Amounts due to related parties Increase (Decrease) in Deferred Revenue Deferred revenue Increase Decrease In Operating lease rights of use assets Right-of-use assets IncreaseDecreaseInOperating lease rights of use assets Increase Decrease In Operating lease lease liability Operating lease liabilities Increase decrease in operating lease lease liability. Depreciation, Depletion and Amortization Depreciation of property and equipment Depreciation expense Amortization of Intangible Assets Amortization of intangible assets Amortization Of Land Use Rights Amortization of land use rights Amortization expenses of land use rights Land use rights are the rights for natural persons, legal persons or other organizations to use land rights for a fixed period of time. Land use rights are recorded at cost less accumulated amortization. Amortization is provided on a straight-line basis over the shorter of the estimated usage periods or the terms of the agreements. Gain (Loss) on Disposition of Property Plant Equipment Loss on disposal of property and equipment Gain (Loss) on Disposition of Stock in Subsidiary Loss on deconsolidation of subsidiaries Goodwill, Impairment Loss Goodwill impairment Debt Securities, Available-for-Sale, Realized Gain (Loss) Realized gain from long-term investments Share-based Compensation Share-based compensation expenses Share-based compensation expense Provision for Doubtful Accounts Allowance for doubtful accounts Deferred Income Taxes Expense Benefit Deferred income taxes Deferred income taxes expense benefit. Unrealized Gain (Loss) on Investments (Gain)/loss from fair value change of investments Proceeds from Equity Method Investment, Distribution Return on investment from an equity method investee Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net cash provided by operating activities Noncash Investing and Financing Items [Abstract] Non-cash investing and financing activities Noncash Payable for Investments and Acquisitions Payable for investments and acquisitions Noncash payable for investments and acquisitions. Capital Expenditures Incurred but Not yet Paid Payable for purchase of property and equipment Supplemental Cash Flow Information [Abstract] Supplement disclosure of cash flow information: Income Taxes Paid, Net Income taxes paid Interest Paid, Excluding Capitalized Interest, Operating Activities Interests paid Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at beginning of year Cash, cash equivalents and restricted cash at end of year Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Effects of exchange rate changes Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Organization and Principal Activities Accounting Policies [Abstract] Significant Accounting Policies [Text Block] Significant Accounting Policies Business Combinations [Abstract] Business Combinations [Abstract] Business Combination Disclosure [Text Block] Business Acquisitions Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Marketable Securities [Table Text Block] Short-Term Investments Text Block [Abstract] Text Block [Abstract] Prepaid Expenses And Other Current Assets [Text Block] Prepaid Expenses And Other Current Assets, Net Prepaid expenses and other current assets. Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Property, Plant and Equipment Disclosure [Text Block] Property and Equipment, Net Land Use Right [Text Block] Land Use Rights, Net Land Use Right [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Intangible Assets, Net [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Intangible Assets Disclosure [Text Block] Intangible Assets, Net Goodwill Disclosure [Text Block] Goodwill, Net Schedule of Investments [Abstract] Investment [Text Block] Long-Term Investments Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurement Payables and Accruals [Abstract] Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Accrued Expenses and Other Current Liabilities Lessee Disclosure [Abstract] Lessee, Operating Leases [Text Block] Lease Debt Disclosure [Abstract] Debt Disclosure [Text Block] Unsecured Senior Notes Class of Stock Disclosures [Abstract] Stockholders' Equity Note Disclosure [Text Block] Common Shares and Treasury Stock Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] SHARE-BASED COMPENSATION Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Income Taxes Earnings Per Share [Abstract] Earnings Per Share [Text Block] Net Income Per Share Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] Related-Parties Transactions Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] Segment Information Defined Contribution Plan Disclosure [Text Block] Mainland China Contribution Plan Defined Contribution Plan Disclosure [Text Block] Statutory Reserves [Text Block] Statutory Reserves Statutory Reserves [Text Block] Receivables [Abstract] Restricted Assets Disclosure [Text Block] Restricted Net Assets Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Basis of Presentation and Significant Accounting Policies [Text Block] Basis of presentation Consolidation, Policy [Policy Text Block] Basis of consolidation Use of Estimates, Policy [Policy Text Block] Use of estimates Business Combinations Policy [Policy Text Block] Business combinations Cash and Cash Equivalents, Policy [Policy Text Block] Cash and cash equivalents Restricted Cash [Policy Text Block] Restricted cash Restricted cash. Deposits Policy [Text Block] Term deposits Deposits policy. Short Term Investments [Policy Text Block] Short-term investments Short term investments. Allowance For Doubtful Accounts [Policy Text Block] Allowance for doubtful accounts Allowance for doubtful accounts. Inventory, Policy [Policy Text Block] Inventory, net Property, Plant and Equipment, Policy [Policy Text Block] Property and equipment, net Construction In Progress [Policy Text Block] Property and equipment also consists of construction in progress Construction in progress. Land Use Right Policy [Text Block] Land use rights, net Land use right. Property, Plant and Equipment, Impairment [Policy Text Block] Impairment of long-lived assets Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Goodwill, net Investment, Policy [Policy Text Block] Cost Method Investments Equity Method Investments [Policy Text Block] Equity Method Investments Marketable Securities Available For Sale Securities Policy [Text Block] Available-for-sale Investments Marketable Securities Available For Sale Securities Policy [Text Block] Noncontrolling Interest [Policy Text Block] Non-controlling interests Noncontrolling interest. Value added Tax, [Policy Text Block] Value added tax ("VAT") Value added tax. Revenue Recognition, Policy [Policy Text Block] Revenue recognition Lessee, Leases [Policy Text Block] Operating leases Advertising Costs, Policy [Policy Text Block] Advertising costs Government subsidies, [Policy Text Block] Government subsidies Government subsidies. Foreign Currency Translation [Policy Text Block] Foreign currency translation Foreign currency translation. Foreign Currency Risk Policy [Text Block] Foreign currency risk Foreign currency risk. Fair Value Measurement, Policy [Policy Text Block] Fair value Fair Value of Financial Instruments, Policy [Policy Text Block] Fair value of financial instruments Earnings Per Share, Policy [Policy Text Block] Net (loss)/income per share Income Tax, Policy [Policy Text Block] Income taxes Comprehensive Income, Policy [Policy Text Block] Comprehensive (loss)/income Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Share-based compensation Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentration of credit risk New Accounting Pronouncements, Policy [Policy Text Block] Recent accounting pronouncements adopted Recent Accounting Standards Yet to Be Adopted [Policy Text Block] Recently issued accounting pronouncements not yet adopted Recent accounting standards yet to be adopted. Equity Securities without Readily Determinable Fair Value [Policy Text Block] Equity securities without readily determinable fair values Equity Securities With Readily Determinable Fair Value [Policy Text Block] Equity securities with readily determinable fair values Disclosure of accounting policy for investment in equity security with readily determinable fair value, which does not qualify for practical expedient to estimate fair value using net asset value per share. Includes, but is not limited to, information considered for determining upward and downward adjustment from observable price change. Equity Securities [Policy Text Block] Equity securities Equity Securities. Intangible Assets, Finite-Lived, Policy [Policy Text Block] Intangible assets, net Senior Notes [Policy Text Block] Unsecured senior notes Senior notes. Revenue Recognition, Deferred Revenue [Policy Text Block] Disaggregation of revenue Schedule of Variable Interest Entities [Table Text Block] Details of Company's Major Subsidiaries and VIEs and Its Major Subsidiaries Condensed Financial Statements [Table Text Block] Balances and Amounts of Company's WFOEs and VIEs Schedule Of Estimated Useful Lives Of Property Plant And Equipment Table [Text Block] Estimated Useful Lives of Assets Schedule of estimated useful lives of property plant and equipment. Schedule of Finite-Lived Intangible Assets [Table Text Block] Summary of Estimated Useful Lives of Intangible Assets Xizang Tianli Education Technology Co Ltd [Member] Xizang Tianli Education Technology Co Ltd [Member] Xizang tianli education technology Co Ltd. Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Purchase Price Allocation Schedule Of Short Term Investment [Table Text Block] Summary of Short-Term Investments Schedule Of Short Term Investment Table [Text Block] Schedule Of Prepaid Expense And Other Current Assets [Table Text Block] Components of Prepaid Expenses and Other Current Assets, Net Schedule of prepaid expense and other current assets. Property, Plant and Equipment [Table Text Block] Summary of Property and Equipment, Net Land Use Right Table [Text Block] Land Use Rights, Net Land Use Right Table [Text Block] Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Schedule of Intangible Assets, Net Schedule of Goodwill [Table Text Block] Schedule of Goodwill, Net Investment [Table Text Block] Long-Term Investments Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Available-for-Sale Securities Recorded in Long Term Investments Measured and Recorded at Fair Value on Recurring Basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Reconciliation of the fair value measurements of assets and liabilities using significant unobservable inputs Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Schedule of Accrued Expenses and Other Current Liabilities Disclosure Of Supplemental Cash Flow Information Of The Leases [Table Text Block] Summary of supplemental cash flow information of the leases Disclosure Of Supplemental Cash Flow Information Of The Leases [table text block]. Lessee, Operating Lease, Liability, Maturity [Table Text Block] Summary of annual undiscounted cash flows for lease liabilities Schedule of Stock by Class [Table Text Block] Movement of the outstanding common shares and treasury stock Share-based Compensation, Stock Options, Activity [Table Text Block] Share-based compensation, stock options Schedule of Nonvested Share Activity [Table Text Block] Summary of NES Activities under 2006 and 2016 Share Incentive Plan Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Koolearn post ipo share option [Member] Koolearn post ipo share option [Member] Koolearn post ipo share option. East Buy Two Thousand Twenty Three Scheme [Member] East Buy 2023 Scheme [Member] East buy two thousand twenty three scheme member. Two Thousand Twenty Five Scheme [Member] East Buy 2025 Scheme [Member] 2025 Scheme [Member] Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Components of Provision for Income Taxes Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Components of Group's Deferred Tax Assets and Liabilities Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Reconciliation of Effective Tax Rates from 25% Statutory Tax Rates Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] The computation of basic and diluted net income per common share Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Schedule of Related Party Transactions [Table Text Block] Balances and Transaction with Related Parties Schedule Of Future Minimum Capital Commitments [Table Text Block] Future Minimum Capital Commitments under Non-Cancelable Construction and Investments Schedule of future minimum capital commitments [Table Text Block]. Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment Schedule Of Depreciation and Amortization Expenses [Table Text Block] Summary of Depreciation and Amortization Expenses Schedule Of depreciation and amortization expenses. Schedule Of Material Unallocated Items [Table Text Block] Summary of Material Unallocated Items Schedule Of material unallocated items. Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Beijing Hewstone Technology Company Limited [Member] Beijing Hewstone Technology Company Limited ("Beijing Hewstone") [Member] Beijing hewstone technology company limited. Elite Concept Holdings Limited [Member] Elite Concept Holdings Limited [Member] Elite concept holdings limited. Winner Park Limited [Member] Winner Park Limited [Member] Winner park limited. Smart Shine International Limited [Member] Smart Shine International Limited [Member] Smart shine international limited. Beijing Pioneer Technology Company Limited [Member] Beijing Pioneer Technology Company Limited [Member] Beijing pioneer technology company limited. Beijing Smart Wood Software Technology Company Limited [Member] Beijing Smart Wood Software Technology Company Limited [Member] Beijing smart wood software technology company limited. New Oriental Xuncheng Technology Hk Limited [Member] New Oriental Xuncheng Technology (HK) Limited [Member] New Oriental Xuncheng Technology HK Limited. Beijing Dexindongfang Network Technology Co Ltd [Member] Beijing Dexin Dongfang Network Technology Co Ltd [Member] Beijing Dexindongfang Network Technology Co Ltd. New Oriental Education and Technology Group Company Limited [Member] New Oriental Education & Technology Group Co., Ltd [Member] New Oriental Education and Technology Group Company Limited [Member] Beijing New Oriental Xuncheng Network Technology Company Limited [Member] Beijing New Oriental Xuncheng Network Technology Co., Ltd [Member] Beijing new oriental xuncheng network technology company limited. Beijing Haidian District Privately Funded New Oriental School [Member] Beijing Haidian District Privately-Funded New Oriental School [Member] Beijing haidian district privately funded new oriental school. Guangzhou Haizhu District Privately Funded New Oriental Training School [Member] Guangzhou Haizhu District Privately-Funded New Oriental Training School [Member] Guangzhou haizhu district privately funded new oriental training school. Beijing New Oriental Dogwood Cultural Communications Company Limited [Member] Beijing New Oriental Dogwood Cultural Communications Co., Ltd [Member] Beijing new oriental dogwood cultural communications company limited. Beijing New Oriental Vision Overseas Consultancy Company Limited [Member] Beijing New Oriental Vision Overseas Consultancy Co., Ltd [Member] Beijing new oriental vision overseas consultancy company limited. Hangzhou New Oriental Advanced Study School [Member] Hangzhou New Oriental Advanced Study School [Member] Hangzhou new oriental advanced study school. East Buy Formerly Known As Koolearn Technology Holding Limited [Member] East Buy (Formerly known as "Koolearn Technology Holding Limited") [Member] East buy formerly known as koolearn technology holding limited. Dongfang Optimization Beijing Technology Co., Ltd [Member] Dongfang Optimization (Beijing) Technology Co., Ltd [Member] Dongfang Optimization (Beijing) Technology Co., Ltd. Oriental Selection Beijing Technology Co., Ltd [Member] Oriental Selection (Beijing) Technology Co., Ltd. [Member] Oriental Selection (Beijing) Technology Co., Ltd. Beijing New Oriental Culture And Tourism Co Ltd [Member] Beijing New Oriental Culture and Tourism Co., Ltd. [Member] Beijing Decision Software Technology Company Limited [Member] Beijing Decision Software Technology Company Limited [Member] Beijing decision software technology company limited. Subsidiaries of Company [Member] Major Subsidiaries of the Company [Member] Subsidiaries of company. Subsidiaries of Variable Interest Entities [Member] Major Subsidiaries and Schools of the VIEs [Member] Subsidiaries of variable interest entities. Variable Interest Entity [Line Items] Variable Interest Entities [Line Items] Entity Incorporation, Date of Incorporation Date of incorporation or acquisition Controlling Ownership By Parent Legal ownership Controlling ownership by parent. Entity Incorporation State Country Name Code Place of incorporation (or establishment)/ operation Entity Incorporation State Country Name Code. Consolidated And Non Consolidated [Axis] Consolidated And Non-Consolidated [Axis] Consolidated And Non-Consolidated [Axis] Consolidated And Non Consolidated [Domain] Consolidated And Non-Consolidated [Domain] Consolidated And Non Consolidated [Domain] Schedule of Product Information [Table] Schedule of Product Information [Table] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Sales Revenue, Net [Member] Sales Revenue, Net [Member] Assets, Total [Member] Assets, Total [Member] Liabilities, Total [Member] Liabilities, Total [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Credit Concentration Risk [Member] Credit Concentration Risk [Member] Customer Concentration Risk [Member] Customer Concentration Risk [Member] Ownership [Axis] Ownership [Axis] Ownership [Domain] Ownership [Domain] Century Friendship [Member] Century Friendship [Member] Century friendship. Product Information [Line Items] Product Information [Line Items] Renewal Term Of License Agreement Renewal of trade mark registration Renewal term of license agreement. Service Fee Percentage Operating services fee percentage from revenue Service fee percentage. Exclusive Service Agreement Renewal Term Exclusive service agreement renewal term Exclusive service agreement renewal term. Notice Period For Agreement Termination Notice period of agreement termination Notice period for agreement termination. Number of Contracts Number of new equity pledged agreements Number of contracts. Noncontrolling Interest, Ownership Percentage by Parent Equity interest of Century Friendship prior to the transfer Shareholding Percentage Of Shareholder Shareholding percentage of Mr. Yu Shareholding percentage of shareholder. Concentration Risk, Percentage Concentration risk percentage Concentration risk Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Previously Held Equity Interest [Member] Previously Held Equity Interest [Member] Previously held equity interest. Variable Interest Entity, Primary Beneficiary [Member] Variable interest entities (VIEs) [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Assets, Noncurrent Total non-current assets Liabilities, Noncurrent Total non-current liabilities Significant Of Accounting Policies [Table] Significant Of Accounting Policies [Table] Significant Of Accounting Policies [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Building [Member] Buildings [Member] Transportation Equipment [Member] Transportation equipment [Member] Furniture and Fixtures [Member] Furniture and education equipment [Member] Computer Equipment And Software [Member] Computer equipment and software [Member] Computer equipment and software. Significant Of Accounting Policies [Line Items] Significant Of Accounting Policies [Line Items] Significant Of Accounting Policies [Line Items] Property, Plant and Equipment, Useful Life Estimated useful lives Amortization period Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets [Line Items] Estimated useful lives of intangible assets [Line items] Finite-Lived Intangible Asset, Useful Life Estimated useful lives Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Trademarks [Member] Trademark [Member] Licensing Agreements [Member] License [Member] Student Base [Member] Student base [Member] Student base. Favorable Lease [Member] Favorable lease [Member] Favorable lease [Member]. Courseware [Member] Courseware [Member] Courseware [Member] Copyrights [Member] Copyright [Member] Copyrights [Member] Distribution Rights [Member] Distribution channel [Member] Distribution channel [Member] Accounts Receivable [Member] Accounts Receivable [Member] Land Use Rights [Member] Land use rights [Member] Land use rights. Equity Method Investment, Ownership Percentage Percentage of ownership interest in voting stock considered to exist significant influence over investee company Investment ownership interest Value Added Tax Rate, General Scale Vat on sales Value Added Tax Rate, General Scale Advertising Expense Total advertising expenses Government Subsidies Government subsidies received Government subsidies. Assets Aggregate Value Denominated In Foreign Currency Aggregate amounts denominated in RMB Assets Aggregate Value Denominated In Foreign Currency Long Term Investments Maturity Period Amortization term of long term debt Long Term Investments Maturity Period Customer Refund Liability Refund liability Refund liability (a) Customer refund liability. Decrease in Value Added Tax Rate General Scale Value added tax Decrease in Value Added Tax Rate General Scale. Percentage of refund collection receivable Excess of refund Excess refund collection percentage. Debt Instrument, Fair Value Disclosure Unsecured debt fair value Finite-Lived Intangible Assets, Remaining Amortization Period Estimated useful lives Cash Paid Noncontrolling Interest Is Adjusted Were Recognized In Equity Attributable To The Company Cash paid noncontrolling interest is adjusted were recognized in equity attributable to the Company Cash paid noncontrolling interest is adjusted were recognized in equity attributable to the Company. Debt Instrument Redemption Consideration Paid Debt instrument redemption consideration paid Debt instrument redemption consideration paid. Contract with Customer, Asset, after Allowance for Credit Loss Contract assets Contract with Customer, Liability, Current Contract liabilities Balance Sheet Position [Axis] Balance Sheet Position [Domain] Self Developed Software Product [Member] Books and Other Services [Member] Books and Other Services [Member] Self Developed Software Service [Member] Self Developed Software Service. Customer [Axis] Customer [Domain] Group Customer [Member] Group customer. Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Unsecured Senior Notes [Member] Unsecured Senior Notes [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Significant Other Observable Inputs Level 2 [Member] Investee Companies [Member] Investee companies. Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Educational Services and Test Preparation Courses [Member] Educational services and test preparation courses [Member] Educational services and test preparation courses member. Private label products and livestreaming Ecommerce and other services [Member] Private label products and livestreaming e-commerce and other services [Member] Private label products and livestreaming E-commerce and other services member. Overseas Study Consulting Services [Member] Overseas study consulting services [Member] Other Segments [Member] Others [Member] East Buy [Member] East Buy [Member] East Buy. Location, Statement of Financial Position, Balance [Axis] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Line Items] Business Acquisition [Line Items] Payments to Acquire Businesses, Gross Cash consideration Business Acquisition, Percentage of Voting Interests Acquired Percentage of voting interests acquired Business acquisition, equity interest Business Combination, Consideration Transferred Business combination, consideration transferred Business Acquisition Percentage Of Additional Voting Interests Acquired Percentage of additional voting interests acquired Business acquisition percentage of additional voting interests acquired. Business Combination, Acquisition of Less than 100 Percent, Non Controlling Interest Percentage Business combination, acquisition of less than 100 percent, non controlling interest percentage Business combination,acquisition of less than 100 percent, noncontrolling interest percentage. Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other Other current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Deferred tax liabilities Business Combination, Initial Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Fair value of the 17.4% equity interests previously held Business combination initial acquisition of less than 100 percent noncontrolling interest fair value. Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Non-controlling interests Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest Total Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Amortization period Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Offsetting [Abstract] Offsetting [Abstract] Offsetting Assets [Table] Offsetting Assets [Line Items] Short-term Investments [Abstract] Short-term investments: Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Trading Securities [Member] Trading securities [Member] Wealth Management Products Measured At Fair Value [Member] Wealth Management Products Measured At Fair Value [Member] Wealth management products measured at fair value. Borrowings Under Repurchase Agreements Textual [Abstract] Borrowings Under Repurchase Agreements Textual [Abstract] Borrowings Under Repurchase Agreements Textual [Abstract] Prepaid Expenses And Other Current Assets [Abstract] Prepaid Expenses And Other Current Assets [Abstract] Prepaid expenses and other current assets. Prepaid Rent Prepaid rents Advances to Suppliers Current Advances to suppliers Advances to suppliers current. Interest Receivable, Current Interest receivables Rental Deposit Current Rental deposits Rental deposit current. Staff Advances Current Staff advances Staff advances current. Prepaid Advertising Prepaid advertising fees Receivable from Third Party Payment Platform Receivable from third party payment platform Receivable from third party payment platform. Value Added Tax Receivable, Current VAT recoverable Deposit Of Advertising And Decoration Current Deposits of advertising and decoration Deposit of advertising and decoration current. Other Prepaid Expense, Current Others Allowance for Doubtful Other Receivables, Current Less: allowance for prepaid expenses and other current assets Prepaid Expense And Other Assets Current Before Allowance Prepaid expense and other assets current before allowance Prepaid expense and other assets current before allowance. Intangible Assets, Net (Including Goodwill) [Abstract] Intangible Assets, Net (Including Goodwill) [Abstract] Property, Plant, and Equipment [Table] Property, Plant and Equipment [Table] Leasehold Improvements [Member] Leasehold Improvements [Member] Construction in Progress [Member] Construction in Progress [Member] Property, Plant and Equipment [Line Items] Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: accumulated depreciation Property Plant And Equipment Exchange Differences Exchange differences Property Plant And Equipment Exchange Differences Property, Plant and Equipment, Gross Property and equipment, gross Intangible Assets, Net (Excluding Goodwill) [Abstract] Real Estate [Abstract] Real Estate [Abstract] Land Use Rights Land use rights Land use rights. Accumulated Amortization Of Land Use Right Less: accumulated amortization Accumulated amortization of land use right. Land Use Rights Exchange Differences Exchange differences Land use rights exchange differences. Land Use Rights [Table] Land Use Rights [Table] Land Use Rights [Table] Land Use Rights [Line Items] Land Use Rights [Line Items] Land Use Rights [Line Items] Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Future amortization expense next twelve months Finite-Lived Intangible Assets, Amortization Expense, Year Two Future amortization expense year two Finite-Lived Intangible Assets, Amortization Expense, Year Three Future amortization expense year three Finite-Lived Intangible Assets, Amortization Expense, Year Four Future amortization expense year four Finite-Lived Intangible Assets, Amortization Expense, Year Five Future amortization expense year five Finite-Lived Intangible Assets, Amortization Expense, after Year Five Future amortization expense thereafter Land Use Rights From The Authorities Carrying Amount Land use rights from the authorities, carrying amount Land use rights from the authorities carrying amount. Finite Lived Intangible Assets [Axis] Finite Lived Intangible Assets. Finite Lived Intangible Assets [Domain] Finite Lived Intangible Assets. Schedule of Indefinite-Lived Intangible Assets [Table] Off-Market Favorable Lease [Member] Favorable lease [Member] Indefinite-lived Intangible Assets [Line Items] Finite-Lived Intangible Assets, Net [Abstract] Intangible assets with finite lives: Finite-Lived Intangible Assets, Gross Intangible assets with finite lives, Gross Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract] Intangible assets with indefinite lives: Indefinite-Lived Trademarks Intangible assets with indefinite lives, Gross Intangible Assets, Gross (Excluding Goodwill) Intangible assets, gross Finite-Lived Intangible Assets, Accumulated Amortization Less: accumulated amortization Intangible Assets Accumulated Exchange Difference Exchange differences Intangible assets accumulated exchange difference. Disclosure Text Block Supplement [Abstract] Impairment of Intangible Assets, Finite-lived Impairment of finite lived intangible assets Amortization expenses Amortization expenses Amortization expenses. Goodwill, Gross Beginning balance Ending balance Effect Of Foreign Exchange Differences Exchange differences Effect Of Foreign Exchange Differences Goodwill, Impaired, Accumulated Impairment Loss Accumulated impairment Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Shanghai Golden Education & Training Co. Ltd. [Member] Golden Finance [Member] Shanghai Golden Education & Training Co. Ltd. Tianjin Uhozz Internet Technology Co Ltd [Member] Uhozz [Member] Tianjin uhozz internet technology co ltd. Sunlands online Education Group [Member] Sunlands [Member] Sunlands [Member] Sunlands online Education Group. EEO Education Tech [Member] VM EDU Fund I L P [Member] VM EDU Fund [Member] VM EDU Fund I L P [Member] VM EDU Fund I L P [Member]. Happy Seed Cayman Ltd [Member] Xizang Songtsam Green Valley Cultural Tourism Co Ltd [Member] Songtsam [Member] Xizang songtsam green valley cultural tourism Co LTD. HBC Holding Cayman Islands Ltd [Member] Debt Security Category [Axis] Debt Security Category [Axis] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Equity Method Investments [Member] Equity Method Investments [Member] Available-for-sale Securities [Member] Available for sale securities investments [Member] Other Long-Term Investments [Member] Other investments [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Equity Securities without Readily Determinable Fair Value, Amount Equity securities without readily determinable fair value Equity Method Investments, Fair Value Disclosure Equity securities with readily determinable fair value New Oriental Education Industry Fund [Member] New Oriental Education Industry Fund [Member] Thaiwoo Management Company [Member] Thaiwoo Enterprise Management Co., Ltd [Member] Thaiwoo management company member. Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Third Party Companies [Member] Third Party Companies [Member] Third party companies. Loss Gain Arising From Change In Fair Value Of Long Term Investments (Loss)/gain Arising From Change In Fair Value Of Investments Loss Gain Arising From Change In Fair Value Of Long Term Investments. Commitments To Fund Investments Committed to invest Commitments To Fund Investments. Proceeds from Sale of Equity Method Investments Proceeds From Sale Of Equity Method Invstments Available For Sale Investment Ownership Percentage Investment ownership interest Available For Sale Investment Ownership Percentage. Impairment Loss Other Than Temporary On Available For Sale Debt Securities Impairment loss on other available for sale investments Impairment loss other than temporary on available for sale debt securities. Equity Method Investment, Realized Gain (Loss) on Disposal Equity Method Investment, Realized Gain (Loss) on Disposal Subsequent Event Type [Axis] Subsequent Event Type [Domain] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Equity Securities, FV-NI, Current Equity securities with readily determinable fair values Investments, Fair Value Disclosure Total Debt Securities, Trading Trading securities Short-Term Investments Wealth management products measured at fair value Fair Value, Inputs, Level 1 [Member] Quoted Prices in Active Market for Identical Assets Level 1 [Member] Fair Value, Inputs, Level 3 [Member] Significant Other Observable Inputs Level 3 [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Debt Securities, Available-for-sale, Amortized Cost Available for sale investments at original cost Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Avaiable for sale investments cumulative unrealized gain Fair Value Measurements [Table] Fair Value Measurements [Table] Fair Value Measurements [Table] Fair Value Measurements [Line Items] Fair Value Measurements [Line Items] Fair Value Measurements [Line Items] Debt Securities, Available-for-sale, Measurement Input Available for sale investments, Measurement input Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input, Price Volatility [Member] Measurement Input, Discount Rate [Member] Transfers From (To) Parent [Abstract] Transfers From (To) Parent [Abstract] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Transfer from Level 2 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Addition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Unrealized loss Unrealized gain Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Disposals Impairment Losses On Assets Measured At Fair Value With Unobservable Inputs Impairment Impairment losses on assets measured at fair value with unobservable inputs. Fair Value Measurement With Unobservable Inputs Reconciliation Assets Foreign Exchange Differences Foreign exchange difference Fair value measurement with unobservable inputs reconciliation assets foreign exchange differences. Investments [Member] Level investments [Member] Other Liabilities Disclosure [Abstract] Accelerated Share Repurchases [Table] Accelerated Share Repurchases [Line Items] Accrued Salaries, Current Accrued payroll Payables For Purchase Of Equipment Current Payable for purchase of property and equipment Payables for purchase of equipment current. Accrued Rent, Current Rent payable Sales and Excise Tax Payable, Current VAT payable Contract with Customer, Refund Liability, Current Advance payment from students (c) Accrued Employee Benefits, Current Welfare payable Accrued Advertising, Current Accrued advertising fees Acquisition and Investment Payable Payable for investments and acquisitions Acquisition and investment payable. Royalty Fees Payable Current Royalty fees payable (f) Royalty fees payable current. Accrual for Taxes Other than Income Taxes, Current Other taxes payable Accrued Professional Fees, Current Accrued professional service fees Other Accrued Liabilities, Current Others (g) Customer Refund Liability, Current Refundable deposits (e) Amounts Reimbursable To Employees Amounts reimbursable to employees (b) Amounts reimbursable to employees. Payable To Merchants Current Payment to merchant (d) Payable to merchants current. Lessee, Lease, Description [Table] Lease Contractual Term [Axis] Lease Contractual Term [Domain] Selected Learning Centre [Member] Selected Learning Centre [Member] Selected learning centre. Lessee, Lease, Description [Line Items] Operating Lease, Cost Operating lease cost Short-term Lease, Cost Short-term lease cost Operating Lease, Weighted Average Remaining Lease Term Weighted average remaining lease term Operating Lease, Weighted Average Discount Rate, Percent Weighted average discount rate Lessee Operating Lease Lease Not Yet Commenced Contract Value Lessee operating lease, lease not yet commenced contract value Lessee operating lease lease not yet commenced contract value. Operating Lease, Impairment Loss Impairment losses on operating lease right of use assets Location Statement Of Income Balance [Axis] Location Statement Of Income Balance [Domain] General And Administrative Expenses [Member] Disclosure Of Supplemental Cash Flow Information Of The Leases [Abstract] Disclosure Of Supplemental Cash Flow Information Of The Leases [Abstract] Disclosure Of Supplemental Cash Flow Information Of The Leases [abstract]. Disclosure Of Supplemental Cash Flow Information Of The Leases [Table] Disclosure Of Supplemental Cash Flow Information Of The Leases [Line Items] Operating Lease, Payments Cash payments for the operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-use assets obtained in exchange for the new operating lease liabilities Lessee, Operating Lease, Liability, Payment, Due [Abstract] Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months May 31, 2027 Lessee, Operating Lease, Liability, Payments, Due Year Two May 31, 2028 Lessee, Operating Lease, Liability, Payments, Due Year Three May 31, 2029 Lessee, Operating Lease, Liability, Payments, Due Year Four May 31, 2030 Lessee, Operating Lease, Liability, Payments, Due Year Five May 31, 2031 Lessee, Operating Lease, Liability, Payments, Due after Year Five Therafter Lessee, Operating Lease, Liability, Payments, Due Total future lease payments Lessee, Operating Lease, Liability, Undiscounted Excess Amount Less: Imputed interest Operating Lease, Liability Present value of operating lease liabilities Operating lease liabilities Debt Instruments [Abstract] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Line Items] Debt Instrument, Face Amount Debt instrument Principal amount Debt Instrument, Interest Rate, Stated Percentage Interest rate Debt Instrument, Frequency of Periodic Payment Debt instrument frequency of periodic payment Debt Instrument, Payment Terms Debt Instrument payment terms Proceeds from Issuance of Senior Long-term Debt Proceeds from issue of unsecured senior notes Debt Issuance Costs, Net Debt issuance costs net Debt Instrument, Repurchase Amount Repurchase price Debt Instrument, Repurchased Face Amount Debt instrument repurchased total principal amount Gain (Loss) on Repurchase of Debt Instrument Repurchase gain Stock, Class of Stock [Table] Class of Stock [Line Items] Issuance of Common Stock Shares for Nonvested Equity Shares Issuance of common share for NES Number of share option, Exercised Issuance of common stock shares for non-vested equity shares. Treasury Stock, Common, Shares Balance, shares Balance, shares Stock Cancelled During Period Shares Cancellation Stock cancelled during period shares. Share Repurchase Program, Authorized, Amount Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Number of Shares Share repurchase program, Authorized, Number of shares Stock Repurchased During Period, Shares Stock repurchased during period, shares Restatement [Axis] Restatement [Domain] Previously Reported [Member] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Nonvested Equity Shares [Member] Non-Vested Equity Shares [Member] Nonvested equity shares. Stock Incentive Plan Twenty Sixteen [Member] 2016 Share Incentive Plan [Member] Stock incentive plan twenty sixteen. Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Number of options granted Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Common shares authorized (including options) granted to employees and directors Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Exercise period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Value of options exercised Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Total unrecognized compensation cost related to NES Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Weighted-average period of recognition Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted-average grant date fair value, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Total fair value of shares vested Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Overall limit on the number of shares which may be issued Stock Issued During Period, Shares, Treasury Stock Reissued Treasury shares for future issuance Share-based Payment Arrangement, Expense Recognised total expenses Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period Share Based Compensation Arrangement Number Of Grantees Awarded Share Based Payments Share based compensation arrangement number of grantees awarded share based payments Share based compensation arrangement number of grantees awarded share based payments. Title of Individual [Axis] Title of Individual [Domain] Sale of Stock [Axis] Sale of Stock [Domain] Parent Company [Member] Grantee Status [Axis] Grantee Status [Axis] Grantee Status [Domain] Grantee Status [Domain] Vesting [Axis] Vesting [Domain] Director [Member] Non Executive Director [Member] Uncategorized [Abstract] Uncategorized [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number Number of NES, Beginning balance Number of NES, Ending balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Number of NES, Vested Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures Number of NES, Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted-average grant date fair value, Beginning balance Weighted-average grant date fair value, Ending balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Weighted-average grant date fair value, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted-average grant date fair value, Forfeited Two Thousand Six and Two Thousand Sixteen Share Incentive Plan [Member] 2006 and 2016 Share Incentive Plan [Member] Two Thousand Six and Two Thousand Sixteen Share Incentive Plan. Disclosure Of Share Based Compensation By Share Based Arrangement Stock Option Activity One [Abstract] Disclosure of share based compensation by share based arrangement stock option activity one. Disclosure Of Share Based Compensation By Share Based Arrangement Stock Option Activity One [Table] Disclosure Of Share Based Compensation By Share Based Arrangement Stock Option Activity One [Table] Disclosure of share based compensation by share based arrangement stock option activity one. Disclosure Of Share Based Compensation By Share Based Arrangement Stock Option Activity One [Line Items] Disclosure Of Share Based Compensation By Share Based Arrangement Stock Option Activity One [Line Items] Disclosure of share based compensation by share based arrangement stock option activity one. Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares Number of Shares Option, Outstanding Number of Shares Option, Outstanding Share Based Compensation By Share Based Payment Arrangement Non Vested Options Outstanding Weighted Average Exercise Price Weighted Average Exercise Price Per Option, Outstanding Weighted Average Exercise Price Per Option, Outstanding Share based compensation by share based payment arrangement non vested options outstanding weighted average exercise price. Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average exercise prices, Exercised Weighted average exercise prices, Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Number Of share options, Options vested and expected to vest, Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Options vested and expected to vest, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Number of share options Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted average exercise price per option Exercisable Koolearn Post Ipo Share Option Three [Member] Koolearn post ipo share option three [Member] Koolearn post ipo share option three. Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Number of Share, Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Number of Share, Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Number of share option outstanding, Ending balance Number of share option outstanding, Beginning balance Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted-average grant date fair value, Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Weighted average exercise prices, Options, Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares Number of Share, Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise prices, Options outstanding, Ending balance Weighted average exercise prices, Options outstanding, Beginning balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Number of Share, Cancelled Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Weighted average exercise prices, Options, Cancelled Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Smart Shine [Member] Smart Shine [Member] Hong Kong New Oriental Vision Overseas Limited [Member] Hong Kong New Oriental Vision Overseas Limited Blingabc Limited [Member] Blingabc Limited Elite and Smart Shine [Member] Income Tax Authority [Axis] Income Tax Authority [Domain] Foreign Tax Authority [Member] Hong Kong [Member] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] State Administration of Taxation, China [Member] Peoples Republic Of China Entities [Member] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent State income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective income tax rate PRC statutory income tax rate Effective Income Tax Rate Reconciliation, Percent Income tax rate Effective tax rate for the Group Income Taxes Withholding Tax On Payment Of Dividend Withholding tax paid for the dividend Income taxes withholding tax on payment of dividend. Income Tax Holiday Tax Rate Preferential tax rate Income tax holiday tax rate. Income Tax Holiday Effective Period Tax holiday year Income tax holiday effective period. Income Tax Holiday, Description Income tax holiday, description Deferred Tax Assets, Valuation Allowance Valuation allowance Less: valuation allowance End Year Net Operating Loss Carryforwards Offset Future Taxable Income Net operating loss End year net operating loss carryforwards offset future taxable income. Operating Loss Carryforwards, Expiration Date Net operating loss expiration dates Withholding Tax Percentage on Repatriated Earnings Withholding tax, dividends paid by PRC schools and subsidiaries to their foreign investors Withholding tax percentage on repatriated earnings. Undistributed Earnings From Subsidiary Companies Reinvested Aggregate undistributed earnings available for distribution Undistributed earnings from subsidiary companies reinvested. Unrecognized Tax Benefits Unrecognized tax benefits Underpayment Of Tax Liability Underpayment of tax liability Underpayment Of Tax Liability Increase (Decrease) in Income Taxes Increase in income tax expenses Increase Decrease In Net Income Loss Per Share Basic Decrease in net income/(loss) per share—basic Increase Decrease In Net Income Loss Per Share Basic Increase Decrease In Net Income Loss Per Share Diluted Decrease in net income/(loss) per share—diluted Increase Decrease In Net Income Loss Per Share Diluted Payment Of Taxes Witheld On Dividend Payment of taxes witheld on dividend Payment of taxes witheld on dividend. EIT Preferential Tax Rate Percentage Eit preferential tax rate percentage EIT preferential tax rate percentage. Investment Sector [Axis] Investment Sector [Axis] Investment sector axis Investment Sector [Domain] Investment Sector [Domain] Investment Sector Domain High And New Tech Enterprise Hnte [Member] High and new tech enterprise (HNTE) [Member] Newly Established Software Enterprise Nese [Member] Newly established software enterprise (NESE) [Member] Newly established software enterprise Nese. Beijing Hewstone Technology Company Limited Shanghai Smart Words Software Technology Company Limited Beijing Smart Wood Software Technology Company Limited and Beijing Pioneer Technology Company Limited [Member] Beijing Hewstone, Shanghai Smart Words, Beijing Smart Wood and Beijing Pioneer [Member] Beijing Hewstone Technology Company Limited Shanghai Smart Words Software Technology Company Limited Beijing Smart Wood Software Technology Company Limited and Beijing Pioneer Technology Company Limited. Beijing Decision Beijing Hewstone And Xuncheng [Member] Beijing Zhiyuan And Beijing Chuangying [Member] Elite Concept [Member] Hainan Dongfang Zhixin Technology Company Limited Zhuhai Zekai Software Technology Company Limited Zhuhai Chongshengheli Network Technology Co Ltd and Tibet Tianli [Member] Hainan Dongfang Zhixin Technology Company Limited, Zhuhai Zekai Software Technology Company Limited, Zhuhai Chongshengheli Network Technology Co., Ltd. and Tibet Tianli [Member] Hainan Dongfang Zhixin Technology Company Limited, Zhuhai Zekai Software Technology Company Limited, Zhuhai Chongshengheli Network Technology Co., Ltd. and Tibet Tianli. Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] UNITED KINGDOM UNITED KINGDOM AUSTRALIA AUSTRALIA CANADA JAPAN UNITED STATES Tax Period [Axis] Tax Period [Axis] Tax Period [Domain] Tax Period [Domain] Earliest Tax Year [Member] Earliest Tax Year [Member] Latest Tax Year [Member] Latest Tax Year [Member] Legal Entity [Axis] Entity [Domain] Walkite [Member] Walkite [Member] Walkite [member] Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] New Oriental Vision Overseas Japan [Member] Period Of Applicability [Axis] Period of Applicability [Axis] Period Of Applicability [Domain] Period of Applicability [Domain] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Current: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Deferred: Deferred Tax Assets Net Noncurrent Classification One [Abstract] Deferred tax assets Deferred tax assets net noncurrent classification one. Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts, Noncurrent Allowance for doubtful accounts Deferred tax assets, tax deferred expense, reserves and accruals, allowance for doubtful accounts, non-current. Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities, Noncurrent Accrued expenses Deferred tax assets, tax deferred expense, reserves and accruals, accrued liabilities, non-current. Deferred Tax Assets, Operating Loss Carryforwards Net operating loss carry-forward Deferred Tax Assets, Gross Total deferred tax assets Deferred Tax Liabilities Classification One [Abstract] Deferred tax liabilities Deferred tax liabilities classification one. Deferred Tax Liabilities, Intangible Assets Tax impact from the unrealized gain on long-term investments Deferred Tax Liabilities, Net Total deferred tax liabilities Deferred Tax Liabilities Acquired Assets Acquired assets Deferred tax liabilities, acquired Assets. Effective Income Tax Rate Reconciliation [Table] Income Tax Jurisdiction, Foreign, Other [Member] Effective Income Tax Rate Reconciliation [Line Items] Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Income Tax At Statutory Income Tax Rate Income tax at statutory income tax rate Income tax at statutory income tax rate. Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Effect of non-deductible expenses and loss and super deduction expenses Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount Effect of income tax exemptions and preferential tax rates Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Effect of income tax rate difference in other jurisdictions Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Changes in valuation allowance Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Chinese mainland EIT rate Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Share-based compensation Effective Income Tax Rate Reconciliation, Deduction, Amount Effect of R&D super-deduction Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Other adjustments Effective Income Tax Rate Reconciliation, Tax Holiday, Amount Effect on tax holiday and preferential tax treatment Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Other jurisdictions' tax effects Effective Income Tax Rate Reconciliation, Percent [Abstract] Effective Income Tax Rate Reconciliation, Tax Holiday, Percent Effect on tax holiday and preferential tax treatment Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Changes in valuation allowance Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent Other jurisdictions' tax effects Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent Share-based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent Others Effective Income Tax Rate Reconciliation, Deduction, Percent Effect of R&D super-deduction Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Other adjustments Net Income (Loss) Attributable to Parent [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted, Total Net income attributable to New Oriental Education & Technology Group Inc.'s shareholders-diluted (US$ in thousands) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Denominator Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Plus: incremental weighted average common shares from assumed vesting of NES using the treasury stock method Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Metropolis Holding China Limited [Member] Metropolis [Member] Metropolis Holding China Limited [Member] Metropolis Holding China Limited [Member] Other Related Party Transactions [Member] Others [Member] Other Related Party Transactions [Member] Beijing Edutainment World Education Technology Company Limited [Member] Edutainment World [Member] Beijing edutainment world education technology company limited. Thaiwoo Management [Member] Thaiwoo management. Related Party Transaction [Line Items] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Operating Costs and Expenses Rental expense Cost of Revenue Cost Board of Directors Chairman [Member] Executive Chairman [Member] Equity Method Investee [Member] Equity Method Investee [Member] Long Term Investee [Member] Related Parties [Axis] Related parties. Related Parties [Domain] Related parties. Maturity [Axis] Maturity [Axis]. Maturity [Domain] Maturity [Domain]. Capital Lease Obligations [Table] Capital Lease Obligations [Table] Capital Lease Obligations [Table] Capital Lease Obligations [Line Items] Capital Lease Obligations [Line Items] Capital Lease Obligations [Line Items] Contractual Obligation Capital commitment Property, Plant and Equipment, Other Types [Member] Purchase of Property and Equipment [Member] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of Operating Segments Number of operating segments Percentage of Auantitative Threshold on Segment Reporting Percentage of quantitative threshold on segment reporting Percentage of quantitative threshold on segment reporting. Number of Reportable Segments Operating Segments [Member] Operating Segments [Member] Corporate, Non-Segment [Member] Corporate, Non-Segment [Member] Operating Costs and Expenses [Abstract] Operating cost and expenses: Nonoperating Income (Expense) Unallocated items Total Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income before income taxes Depreciation and Amortization Expenses [Table] Depreciation and Amortization Expenses [Line Items] Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Types Of services [Axis] Types Of services [Domain] Private Label Products And Livestreaming ECommerce [Member] Private label products and livestreaming e-commerce [Member] Others [Member] Others [Member] Other Nonoperating-Asset Related Income Other items Retirement Benefits, Description [Abstract] Retirement Benefits [Abstract] Compensation and Retirement Disclosure [Abstract] Defined Contribution Plan, Cost Contributions for employee benefits Statutory Accounting Practices [Table] Statutory Accounting Practices [Table] Statutory Accounting Practices [Line Items] Statutory Accounting Practices [Line Items] Percentage Of Profit After Tax For Appropriation To General Reserve Percentage allocation of profits to general reserves Percentage of profit after tax for appropriation to general reserve. Percentage Of Registered Capital Reached Registered capital Percentage of registered capital reached. Accrued General Reserve Accrued for general reserve Accrued General Reserve Percentage Of Profit After Tax For Appropriation To Development Fund Percentage allocation of profits to development fund Percentage of profit after tax for appropriation to development fund. Appropriations To Statutory Reserves Appropriations to reserves Appropriations to statutory reserves. Amount Transfers To Statutory Reserves Group transfers to the statutory reserves Amount transfers to statutory reserves. Profit private School Minimum Appropriations Of Audited Annual Net Income Profit private school minimum appropriations of audited annual net income Profit private school minimum appropriations of audited annual net income. Non Profit private School Minimum Appropriations Of Audited Annual Increase in the Unrestricted Net Assets Non-profit private school minimum appropriations of audited annual increase in the unrestricted net assets of the school Non profit private school minimum appropriations of audited annual increase in the unrestricted net assets. SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Development Fund [Member] Development fund [Member] Development Fund [Member] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Restricted Net Assets [Table] Restricted Net Assets [Table] Restricted Net Assets [Table] Wholly Owned Subsidiaries [Member] Wholly owned subsidiaries [Member] Wholly owned subsidiaries. Restricted Net Assets [Line Items] Restricted Net Assets [Line Items] Restricted Net Assets [Line Items] Restricted Assets Net Restricted net assets Restricted assets net. Additional Paid In Capital And Other [Member] Paid in capital, additional paid-in capital and statutory reserves [Member] Additional Paid In Capital And Other [Member] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event [Line Items] Subsequent Event [Line Items] Dividends, Common Stock, Cash Dividend common stock cash Subsequent Event [Member] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Investor [Axis] Investor [Axis] Investor [Axis] Investor [Domain] Investor [Domain] Investor. Agreement [Axis] Agreement. Agreement [Domain] Agreement.