Class of Stock [Axis] Preferred Class A [Member] Preferred Class B [Member] Preferred Class C [Member] Preferred Class D [Member] Equity Components [Axis] Preferred Stock [Member] Series A Preferred Stock [Member] Series B Preferred Stock [Member] Series D Preferred Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Comprehensive Income [Member] AOCI Including Portion Attributable to Noncontrolling Interest [Member] Noncontrolling Interest [Member] Long-Lived Asset, Class [Axis] Technology Equipment [Member] Software, Internally Developed [Member] Automobiles [Member] Other Machinery and Equipment [Member] Intangible Asset, Finite-Lived, Class [Axis] Gas Regulator [Member] Interconnection Agreements [Member] Total [Member] Debt Instrument [Axis] Martus Darlene Covi 19 [Member] Promissory Note One [Member] Promissory Note Two [Member] Promissory Note Three [Member] Promissory Note Four [Member] Promissory Note Five [Member] Promissory Note Six [Member] Promissory Notes Six [Member] Promissory Note Seven [Member] Promissory Note Eight [Member] Financing Loan [Member] Promissory Note Thirteen [Member] 49% of Shareholder of SwissLink 1 49% of Shareholder of SwissLink 2 Third Party Loans [Member] Loans Payable [Member] Directors Issuance [Member] Series C Preferred Stock [Member] Related Party Transaction [Axis] Related Party One [Member] Segments [Axis] U S A [Member] Switzerland [Member] United Kingdom [Member] Elimination [Member] Telecom [Member] Fintech [Member] Corporate Segment [Member] Industrial Elimination [Member] Cover [Abstract] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Statement [Table] Statement [Line Items] ASSETS Current Assets Cash Accounts receivable, net Inventory Due from related parties Prepaid and other current assets Total Current Assets Property and equipment, net Intangible asset, net Goodwill Deferred tax assets Other assets TOTAL ASSETS LIABILITIES AND STOCKHOLDERS' EQUITY Current Liabilities Accounts payable Accrued and other current liabilities Contract liabilities Due to related parties Loans payable - net of discount of $83,053 and $127,170, respectively Loans payable - related parties Contingent liability for acquisition of subsidiary Stock payable for acquisition of subsidiary Total Current Liabilities Loans payable, non-current Employee benefits, non-current TOTAL LIABILITIES Stockholders' Equity Preferred stock: 1,200,000 authorized; $0.001 par value Common stock: 26,000,000 authorized; $0.001 par value 5,076,368 and 4,668,017 shares issued and outstanding, respectively Additional paid in capital Accumulated deficit Accumulated other comprehensive loss Equity attributed to stockholders of IQSTEL Inc. Equity attributable to noncontrolling interests TOTAL STOCKHOLDERS' EQUITY TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Preferred Stock, Shares Authorized Preferred Stock, Par or Stated Value Per Share Preferred Stock, Shares Issued Preferred Stock, Shares Outstanding Common Stock, Shares Authorized Common Stock, Par or Stated Value Per Share Common Stock, Shares, Issued Common Stock, Shares, Outstanding Income Statement [Abstract] Revenues Cost of revenue Gross profit Operating expenses General and administration Total operating expenses Operating loss Other income (expense) Other income Other expenses Interest expense Total other expense Net loss before provision for income taxes Income taxes Net loss Less: Net (loss) / income attributable to noncontrolling interests Net loss attributed to IQSTEL Inc. Undeclared dividends on Series D Preferred Stock Net loss attributed to stockholders of IQSTEL Inc. Comprehensive loss Total loss Less: Comprehensive (loss) income attributable to noncontrolling interests Net comprehensive loss attributed to IQSTEL Inc. Basic and diluted loss per common share Weighted average number of common shares outstanding - Basic and diluted Balance - December 31, 2024 Shares, Issued Common stock issued for conversion of series D preferred stock [custom:StockIssuedForConversionOfSeriesDPreferredStockShares] Common stock issued for compensation Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Dividend to non-controlling interest [custom:DividendToNonControllingInterestShares] Net income (loss) Common stock issued for conversion of debt Stock Issued During Period, Shares, Conversion of Units Common stock issued for common stock payable Stock Issued During Period, Shares, Other Balance - March 31, 2025 Shares, Issued Statement of Cash Flows [Abstract]  CASH FLOWS FROM OPERATING ACTIVITIES: Net loss Adjustments to reconcile net loss to net cash used in operating activities: Stock based compensation Bad debt expense Depreciation and amortization Amortization of debt discount Changes in operating assets and liabilities: Accounts receivable Prepaid and other assets Accounts payable Accrued and other current liabilities Contract liabilities Net cash used in operating activities  CASH FLOWS FROM INVESTING ACTIVITIES: Purchase of property and equipment Payment of loan receivable - related party Collection of amounts due from related parties Net cash used in investing activities  CASH FLOWS FROM FINANCING ACTIVITIES: Proceeds from loans payable Repayments of loans payable Repayments of note payable issued for acquisition of subsidiary Repayment of loans payable - related parties Proceeds from convertible notes Repayment of convertible notes Dividend paid to non-controlling interest Net cash provided by financing activities  Net change in cash  Cash, beginning of period  Cash, end of period  Supplemental cash flow information Cash paid for interest Cash paid for taxes  Non-cash transactions: Note payable issued for acquisition of subsidiary Non-cash dividend paid Accounting Policies [Abstract] NOTE 1 - ORGANIZATION AND DESCRIPTION OF BUSINESS NOTE 2 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation and Presentation of Financial Statements [Abstract] NOTE 3 - GOING CONCERN Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] NOTE 4 – PREPAID AND OTHER CURRENT ASSETS Property, Plant, and Equipment [Abstract] NOTE 5 – PROPERTY AND EQUIPMENT Intangible Asset, Goodwill and Other [Abstract] NOTE 6 – INTANGIBLE ASSETS Payables and Accruals [Abstract] NOTE 7 – ACCRUED AND OTHER CURRENT LIABILITIES Debt Disclosure [Abstract] NOTE 8 - LOANS PAYABLE Equity [Abstract] NOTE 9 – STOCKHOLDERS’ EQUITY Related Party Transactions [Abstract] NOTE 10 - RELATED PARTY TRANSACTIONS Commitments and Contingencies Disclosure [Abstract] NOTE 11 – COMMITMENTS AND CONTINGENCIES Segment Reporting [Abstract] NOTE 12 - SEGMENTS Income Tax Disclosure [Abstract] NOTE 13 – INCOME TAX Subsequent Events [Abstract] NOTE 14 – SUBSEQUENT EVENTS. Organization and Operations Basis of Presentation Reclassification Consolidation Policy Use of Estimates Cash and Cash Equivalents Accounts Receivable and Allowance for Uncollectible Accounts Net Income (Loss) Per Share of Common Stock Concentrations of Credit Risk Financial Instruments Revenue Recognition Cost of revenue Recently Issued Accounting Pronouncements NOTE 2 -SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance for Credit Losses Rollforward NOTE 4 - PREPAID AND OTHER CURRENT ASSETS - Schedule of Prepaid and Other Current Assets NOTE 5 - PROPERTY AND EQUIPMENT - Schedule of Propery Plant and Equipment Intangible Asset, Indefinite-Lived [Table Text Block] NOTE 6 - INTANGIBLE ASSETS - Estimated Future Amortization NOTE 7 - ACCRUED AND OTHER CURRENT LIABILITIES NOTE 8 - LOANS PAYABLE - Schedule of Loans Payable NOTE 8 - LOANS PAYABLE - Schedule of Loans Payable to Related Parties NOTE 12 - SEGMENT - Operating Activities by Geographic Segment Accounts Receivable, Allowance for Credit Loss, Current Allowance for Loan and Lease Loss, Recovery of Bad Debts Financing Receivable, Held-for-Sale, Not Part of Disposal Group, Reconciliation to Cash Flow, Deduction from Held-for-Sale Cash Equivalents, at Carrying Value Other receivable Prepaid expenses Advance payment Tax receivable Deposit for acquisition of asset Security deposit Prepaid Expenses Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Line Items] Total property and equipment Accumulated depreciation and amortization Total property and equipment [custom:DepreciationAndAmortizationthree] [custom:DepreciationAndAmortization2] Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived, before Accumulated Amortization Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived, after Accumulated Amortization Intangible Asset, Finite-Lived, Useful Life Below Market Lease, Amortization Income, Year One Below Market Lease, Amortization Income, Year Two Below Market Lease, Amortization Income, Year Three Below Market Lease, Amortization Income, Year Four Below Market Lease, Amortization Income, Year Five Below Market Lease, Amortization Income, after Year Five Below Market Lease, Net Accrued liabilities Cost provision Accrued interest Salary payable - management Salary payable and employee benefit Other current liabilities Income tax payable Dividend payable Total accrued and other current liabilities Short-Term Debt [Table] Short-Term Debt [Line Items] Long-Term Debt, Gross Debt Instrument, Issuance Date Debt Instrument, Maturity Date Debt Instrument, Interest Rate, Stated Percentage Lessee, Finance Lease, Term of Contract Debt Instrument, Unamortized Discount Long-Term Debt Long-Term Debt, Current Maturities Long-Term Debt, Excluding Current Maturities Loans Payable Debt Instrument, Maturity Date, Description Other Loans Payable, Current Loans Payable, Noncurrent Increase (Decrease) in Other Loans Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount) Payments for Loans Interest Expense, Operating and Nonoperating Amortization of Debt Discount (Premium) Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Line Items] Stock Issued During Period, Shares, New Issues [custom:StockIssuedDuringPeriodSharesConversionOfSeriesDPreferredStock] Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Preferred Stock, Participation Rights Preferred Stock, Voting Rights Preferred Stock, Redemption Terms Preferred Stock, Conversion Basis Debt Instrument, Convertible, Terms of Conversion Feature Conversion of Stock, Shares Converted [custom:SeriesDPreferredConvertedIntoCommonStockShares] Related Party Transaction [Table] Related Party Transaction [Line Items] Increase (Decrease) in Notes Receivable, Related Parties Proceeds from Collection of (Payments to Fund) Long-Term Loans to Related Parties Loans and Leases Receivable, Related Parties (Deprecated 2026) Notes and Loans Payable, Current Management Fee Expense Increase (Decrease) in Employee Related Liabilities Financial Guarantee Insurance Contracts, Risk Management Activities, Mitigating Claim Liabilities, Accrued Liabilities Lessee, Operating Lease, Term of Contract Operating Lease, Expense Segment Reporting [Table] Segment Reporting [Line Items] Gross profit Salaries, Wages and Benefits Technology Professional Fees Legal and Regulatory Travel & Events Public Cost Advertising Bank Services and Fees Depreciation and Amortization Office, Facility and Other Insurance Stock-based compensation Impairment loss of goodwill Operating income (loss) Other income (expense) Income tax expense Net income (loss) Assets Current assets Non-current assets Liabilities Current liabilities Non-current liabilities Represents the Martus, during the indicated time period. Represents the 49% of Shareholder of SwissLink - 1, during the indicated time period. Represents the 49% of Shareholder of SwissLink - 2, during the indicated time period. Assets Liabilities [Default Label] Equity, Including Portion Attributable to Noncontrolling Interest Equity, Attributable to Parent Liabilities and Equity Operating Expenses InterestExpense2 Nonoperating Income (Expense) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income Tax Expense (Benefit) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Shares, Issued Increase (Decrease) in Accounts Receivable Increase (Decrease) in Prepaid Expense and Other Assets Increase (Decrease) in Accounts Payable, Trade Increase (Decrease) in Other Accrued Liabilities Contract with Customer, Liability, Revenue Recognized Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Payments to Acquire Property, Plant, and Equipment Payments to Fund Long-Term Loans to Related Parties Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Repayments of Other Debt Repayments of Notes Payable Repayments of Related Party Debt Repayments of Convertible Debt Proceeds from (Payments to) Noncontrolling Interests Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cost of Goods and Service [Policy Text Block] Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Net Income (Loss), Including Portion Attributable to Noncontrolling Interest