Private Placement Warrants [Member] Sponsor [Member] Class A Ordinary Share [Member] CGC IV Sponsor LLC [Member] Cantor Fitzgerald & Co. [Member] Non-managing Sponsor [Member] Without Over Allotment [Member] With Over Allotment [Member] Net Proceeds from this Offering, Proceeds from the Sponsor Loan and the Sale of the Private Placement Warrants [Member] Plus Offering Costs Accrued for or Paid in Advance, Excluded from Tangible Book Value [Member] Less Sponsor Loan [Member] Less: Amounts paid for Redemptions [Member] Ordinary Shares Forfeited if Over-allotment is not Exercised [Member] Ordinary Shares Offered and Sale of Private Placement Warrants [Member] Less Ordinary Shares Redeemed [Member] Document Type Entity Registrant Name Entity Incorporation, State or Country Code Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Ex Transition Period Entity Central Index Key Amendment Flag Compensation Nature [Axis] SPAC Sponsor, Affiliate, or Promoter [Axis] Over-allotment Option [Axis] Redemption Level [Axis] Dilution Source [Axis] Security Class [Axis] SPAC Offering Forepart, Security Holders Have the Opportunity to Redeem Securities [Flag] SPAC Offering Forepart, Security Holder Redemptions Subject to Limitations [Flag] SPAC Offering Forepart, De-SPAC Consummation Timeframe Description [Text Block] SPAC Offering Forepart, De-SPAC Consummation Timeframe De-SPAC Consummation Timeframe May be Extended [Flag] De-SPAC Consummation Timeframe Extension, Security Holders Voting or Redemption Rights [Flag] SPAC, Actual or Potential Material Conflict of Interest, Prospectus Summary [Text Block] SPAC Registered Offering Prospectus Summary, Identify and Evaluate Potential Business Combination Candidates, Manner [Text Block] De-SPAC Consummation Timeframe, How Extended [Text Block] SPAC Will Solicit Shareholder Approval for De-SPAC Transaction [Flag] De-SPAC Consummation Timeframe, Extension Failure, Consequences to Sponsor [Text Block] De-SPAC Consummation Timeframe, Limitations on Extensions [Text Block] De-SPAC Consummation Timeframe, Duration SPAC Prospectus Summary, Sponsor Compensation [Table Text Block] SPAC, Trust or Escrow Account, Material Terms [Text Block] SPAC, Trust or Escrow Account, Gross Offering Proceeds Placed, Percent SPAC, Trust or Escrow Account, Gross Offering Proceeds Placed, Amount SPAC Additional Financing Plans, Impact on Security Holders [Text Block] SPAC, Securities Offered, Redemption Rights [Text Block] Securities Issued or to be Issued, Shares Price Paid or to be Paid for Securities, Per Share (in Dollars per share) Price Paid or to be Paid for Securities, Total Amount (in Dollars) SPAC Offering Forepart, Adjusted Net Tangible Book Value Per Share [Table Text Block] Registered Offering Price per Share Registered Offering Price per Share (in Dollars per share) Net Tangible Book Value, Adjusted, per Share Net Tangible Book Value, Adjusted, per Share (in Dollars per share) Difference Between the Offering Price and the Adjusted Net Tangible Book Value, Per Share SPAC Sponsor Name Experience and Involvement in Other SPACs [Text Block] SPAC Sponsor, Affiliate, or Promoter SPAC Sponsor Form of Organization SPAC Sponsor Direct and Indirect Material Interest Holder Nature SPAC Sponsor and Affiliates Information, Restrictions on Sale of SPAC Securities [Table Text Block] Fiduciary Duties to Other Companies, SPAC Officers and Directors [Table Text Block] SPAC Sponsor, Terms That Would Result in Earlier Expiration of Restrictions [Text Block] SPAC, Adjusted Net Tangible Book Value Per Share with Sources of Dilution [Table Text Block] Net Tangible Book Value, Pre-transaction, Per Share (in Dollars per share) Net Tangible Book Value, Amount of Dilution, per Share (in Dollars per share) Net Tangible Book Value Net Tangible Book Value, Adjusted Number of Shares Used to Determine Net Tangible Book Value per Share, Pre-transaction (in Shares) Number of Shares Used to Determine Net Tangible Book Value per Share, Adjusted (in Shares) SPAC Officers and Directors, Fiduciary Duties to Other Companies, Description [Text Block] Conflict of Interest, Description [Text Block] Founder Shares [Member] Over-allotment Option Exercised [Member] Redemption at 25 Percent of Maximum [Member] Redemption at 50 Percent of Maximum [Member] Redemption at 75 Percent of Maximum [Member] Redemption at 100 Percent of Maximum [Member] Over-allotment Option Not Exercised [Member] Public Units [Member] Less: Deferred Underwriting Commissions [Member] Less: Overallotment Liability [Member] All SPAC Sponsors, Affiliates, or Promoters [Member] All Compensation Natures [Member] SPAC Offering Forepart, Sponsor Compensation [Table] SPAC Offering Forepart, Sponsor Compensation [Line Items] All Over-allotment Options [Member] All Redemption Levels [Member] SPAC Offering Forepart, Adjusted Net Tangible Book Value Per Share [Table] SPAC Forepart, Adjusted Net Tangible Book Value Per Share [Line Items] SPAC Sponsor [Table] SPAC Sponsor [Line Items] SPAC Sponsor Direct and Indirect Material Interest Holders [Table] SPAC Sponsor Direct and Indirect Material Interest Holder [Line Items] SPAC Sponsor and Affiliates Information, Restrictions on Sale of SPAC Securities [Table] SPAC Sponsor and Affiliates Information, Restrictions on Sale of SPAC Securities [Line Items] All Security Classes [Member] All Dilution Sources [Member] SPAC, Adjusted Net Tangible Book Value Per Share with Sources of Dilution [Table] Number of Shares Used [Line Items] Fiduciary Duties to Other Companies, SPAC Officers and Directors [Table] Fiduciary Duties to Other Companies, SPAC Officers and Directors [Line Items] SPAC Sponsor, Conflicts of Interest [Table] SPAC Sponsor, Conflict of Interest [Line Items] De-SPAC Consummation Timeframe, Limitations on Extensions [Text Block] Entity Small Business Net Tangible Book Value, Amount of Dilution, per Share SPAC Prospectus Summary, Sponsor Compensation [Table Text Block] Net Tangible Book Value SPAC Forepart, Adjusted Net Tangible Book Value Per Share [Abstract] Securities Issued or to be Issued, Shares Net Tangible Book Value, Pre-transaction, Per Share Public Units [Member] Without Over Allotment Member Number of Shares Used to Determine Net Tangible Book Value per Share, Pre-transaction With Over Allotment Member Plus Offering Costs Accrued For Or Paid In Advance Excluded From Tangible Book Value Member Net Tangible Book Value, Adjusted, per Share Difference Between the Offering Price and the Adjusted Net Tangible Book Value, Per Share SPAC Sponsor Form of Organization SPAC Offering Forepart, De-SPAC Consummation Timeframe Description [Text Block] SPAC Sponsor, Terms That Would Result in Earlier Expiration of Restrictions [Text Block] SPAC, Securities Offered, Redemption Rights [Text Block] Nonmanaging Sponsor Member De-SPAC Consummation Timeframe May be Extended [Flag] SPAC Sponsor and Conflicts of Interest [Line Items] Over-allotment Option Exercised [Member] Over-allotment Option Not Exercised [Member] Entity Ex Transition Period Number of Shares Used to Determine Net Tangible Book Value per Share, Adjusted Overallotment Liability [Member] SPAC, Adjusted Net Tangible Book Value Per Share with Sources of Dilution [Abstract] Fiduciary Duties to Other Companies, SPAC Officers and Directors [Abstract] Price Paid or to be Paid for Securities, Per Share SPAC Will Solicit Shareholder Approval for De-SPAC Transaction [Flag] Price Paid or to be Paid for Securities, Total Amount SPAC Offering Forepart, Sponsor Compensation [Abstract] SPAC Sponsor and Affiliates Information, Restrictions on Sale of SPAC Securities [Abstract] SPAC Offering Prospectus Summary [Line Items] Entity Emerging Growth Company SPAC, Trust or Escrow Account, Gross Offering Proceeds Placed, Percent SPAC Sponsor, Affiliate, or Promoter Conflict of Interest, Description [Text Block] Sponsor Member Redemption at 25 Percent of Maximum [Member] SPAC Officers and Directors, Fiduciary Duties to Other Companies, Description [Text Block] Net Proceeds From This Offering Proceeds From The Sponsor Loan And The Sale Of The Private Placement Warrants Member Ordinary Shares Offered And Sale Of Private Placement Warrants Member Experience and Involvement in Other SPACs [Text Block] SPAC Offering Forepart, Security Holder Redemptions Subject to Limitations [Flag] Cantor Fitzgerald Co Member SPAC, Trust or Escrow Account, Material Terms [Text Block] CGCIVSponsor LLCMember Founder Shares [Member] Less Amounts Paid For Redemptions Member Less Sponsor Loan Member De-SPAC Consummation Timeframe Extension, Security Holders Voting or Redemption Rights [Flag] Ordinary Shares Forfeited If Overallotment Is Not Exercised Member Registered Offering Price per Share Redemption at 100 Percent of Maximum [Member] Less Ordinary Shares Redeemed Member Entity Incorporation, State or Country Code SPAC Offering Forepart, Adjusted Net Tangible Book Value Per Share [Table Text Block] Document Type SPAC, Adjusted Net Tangible Book Value Per Share with Sources of Dilution [Table Text Block] Amendment Flag SPAC Sponsor Name De-SPAC Consummation Timeframe, How Extended [Text Block] Class AOrdinary Share Member Deferred Underwriting Commissions [Member] De-SPAC Consummation Timeframe, Extension Failure, Consequences to Sponsor [Text Block] SPAC, Trust or Escrow Account, Gross Offering Proceeds Placed, Amount Entity Filer Category SPAC, Actual or Potential Material Conflict of Interest, Prospectus Summary [Text Block] Entity Central Index Key Redemption at 75 Percent of Maximum [Member] Private Placement Warrants Member Net Tangible Book Value, Adjusted Redemption at 50 Percent of Maximum [Member] SPAC Registered Offering Prospectus Summary, Identify and Evaluate Potential Business Combination Candidates, Manner [Text Block] SPAC Sponsor Direct and Indirect Material Interest Holder Nature SPAC Sponsor [Abstract] De-SPAC Consummation Timeframe, Duration Fiduciary Duties to Other Companies, SPAC Officers and Directors [Table Text Block] SPAC Additional Financing Plans, Impact on Security Holders [Text Block] SPAC Sponsor, Conflicts of Interest [Abstract] Entity Registrant Name SPAC Offering Forepart, De-SPAC Consummation Timeframe SPAC Offering Forepart, Security Holders Have the Opportunity to Redeem Securities [Flag] SPAC Sponsor and Affiliates Information, Restrictions on Sale of SPAC Securities [Table Text Block]