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Net Income (Loss) Attributable to Parent Entity Address, State or Province Entity Address, State or Province Change in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Payments to noncontrolling interests Payments to Noncontrolling Interests Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Contract with customer, liability, revenue recognized Contract with Customer, Liability, Revenue Recognized Including Related Parties Contract with Customer, Liability, Revenue Recognized Including Related Parties Accounts payable, related parties Accounts Payable, Related Parties, Current Total current assets Assets, Current Operating Expenses Operating Expenses [Abstract] Comprehensive loss attributable to redeemable non-controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Net loss per share attributable to nCino, Inc.: Earnings Per Share [Abstract] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Acquired developed technology Developed Technology Rights [Member] Entity Interactive Data Current Entity Interactive Data Current Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Office space Lessee, Operating Lease, Office Space Lessee, Operating Lease, Office Space Deferred revenue, noncurrent Contract with Customer, Liability, Noncurrent Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Other accounts receivable Other Receivables, Net, Current Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Common Stock Common Stock [Member] Net loss attributable to redeemable non-controlling interest (Note 3) Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Product and Service [Domain] Product and Service [Domain] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Costs capitalized to obtain revenue contracts, current portion, net Capitalized Contract Cost, Net, Current Issuance of common stock in connection with initial public offering, net of underwriting discounts and commissions (in shares) Stock Issued During Period, Shares, New Issues Gross Amount Finite-Lived Intangible Assets, Gross Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Remaining performance obligation, expected timing of satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Money Market Funds Money Market Funds [Member] Provision for (recovery of) bad debt Charged to (recovery of) bad debt expense Accounts Receivable, Credit Loss Expense (Reversal) Share-based Payment Arrangement Share-based Payment Arrangement [Member] Visible Equity, LLC Visible Equity, LLC [Member] Visible Equity, LLC Dilutive loss per share: Earnings Per Share, Diluted [Abstract] Exercise of stock options (in shares) Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Related Party Transactions [Abstract] Net increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Business Combinations Business Combination Disclosure [Text Block] Fund Spending Agreement Fund Spending Agreement [Member] Fund Spending Agreement Stock Option Share-based Payment Arrangement, Option [Member] Principles of Consolidation and Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Weighted average-common shares outstanding basic (in shares) Weighted Average Number of Shares Outstanding, Basic Fair value of common stock issued as consideration for business acquisition Stock Issued Subsequent Events [Abstract] Ownership [Axis] Ownership [Axis] Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Variable Interest Entity Consolidation, Variable Interest Entity, Policy [Policy Text Block] Sale of Stock [Domain] Sale of Stock [Domain] Ownership [Domain] Ownership [Domain] Plan Name [Domain] Plan Name [Domain] Revenues Revenue from Contract with Customer [Text Block] nCino K.K nCino K.K. [Member] nCino K.K. Balance, beginning of year Balance, end of year Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Nonvoting Common Stock Nonvoting Common Stock [Member] Proceeds from initial public offering, net of underwriting discounts and commissions Proceeds from Issuance Initial Public Offering Additional paid-in capital Additional Paid in Capital 2022 Finite-Lived Intangible Asset, Expected Amortization, Year One Class of Stock [Axis] Class of Stock [Axis] Income tax expense Income Tax Expense (Benefit) Cash paid during the year for taxes, net of refunds Income Taxes Paid, Net Schedule of Nonvested Restricted Stock Units Activity Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Cash and Cash Equivalents, beginning of period Cash and Cash Equivalents, end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Diluted loss per share attributable to nCino, Inc. (in USD per share) Earnings Per Share, Diluted License and Service License and Service [Member] Cash consideration to members Cash consideration to shareholders Payments to Acquire Businesses, Gross Accounts payable, related parties Increase (Decrease) in Accounts Payable, Related Parties Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Finite-lived Intangible Assets Amortization Expense Finite-lived Intangible Assets Amortization Expense [Table Text Block] Stock issuance related to business combinations Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Net loss and adjustment attributable to redeemable non-controlling interest Net Income (Loss) Attributable to Redeemable Noncontrolling Interest, Net of Adjustment Net Income (Loss) Attributable to Redeemable Noncontrolling Interest, Net of Adjustment Related Party Transaction [Domain] Related Party Transaction [Domain] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Deferred income taxes Deferred Income Tax Expense (Benefit) Award Type [Axis] Award Type [Axis] Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Prepaid Expenses and Other Current Assets Prepaid Expenses and Other Current Assets [Member] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Translation adjustments Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) Maximum Maximum [Member] Security Exchange Name Security Exchange Name Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Accumulated Deficit Retained Earnings [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Less comprehensive loss attributable to redeemable non-controlling interest: Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest [Abstract] 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] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Balance, beginning of period Balance, end of period Accounts Receivable, Allowance for Credit Loss Award Type [Domain] Award Type [Domain] Accounts receivable, related parties Increase (Decrease) in Accounts Receivable, Related Parties Document Transition Report Document Transition Report Revenue from related parties Revenue from Related Parties Exercisable, October 31, 2020 (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Basic and Diluted Loss per Share Earnings Per Share [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Redeemable non-controlling interest (Note 3) Redeemable Noncontrolling Interest, Equity, Carrying Amount Current Liabilities Liabilities, Current [Abstract] Equity instruments other than options, vested, number of shares (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Vested, Number Of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Vested, Number Of Shares Fair Value, Measurement, Recurring Fair Value, Recurring [Member] Costs incurred related to stock issuance Sale Of Stock, Costs Incurred Related To Stock Issuance Sale Of Stock, Costs Incurred Related To Stock Issuance Recently Adopted Accounting Guidance New Accounting Pronouncements, Policy [Policy Text Block] Statement of Financial Position [Abstract] Basic loss per share: Earnings Per Share, Basic [Abstract] Contingent consideration - cash payment Business Combination, Consideration Transferred, Cash Paid Business Combination, Consideration Transferred, Cash Paid