SPAC Offering Prospectus Summary [Line Items]

SPAC Offering Forepart, Security Holders Have the Opportunity to Redeem Securities [Flag]

true

SPAC Offering Forepart, De-SPAC Consummation Timeframe Description [Text Block]

We have until the date that is 24 months from the closing of this offering or until such earlier liquidation date as our board of directors may approve, to consummate our initial business combination.

SPAC Offering Forepart, De-SPAC Consummation Timeframe May be Extended [Flag]

true

SPAC Will Solicit Shareholder Approval for De-SPAC Transaction [Flag]

true

De-SPAC Consummation Timeframe Extension, Security Holders Voting or Redemption Rights [Flag]

true

SPAC, Trust or Escrow Account, Material Terms [Text Block]

Nasdaq rules provide that at least 90% of the gross proceeds from this offering and the sale of the private placement units be deposited in a trust account. Of the $206,650,000 in gross proceeds we receive from this offering and the sale of the private placement units described in this prospectus, or $236,650,000 if the underwriters’ over-allotment option is exercised in full, $200,000,000 ($10.00 per unit), or $230,000,000 if the underwriters’ over-allotment option is exercised in full ($10.00 per unit), will be deposited into a trust account in the United States with Continental Stock Transfer & Trust Company acting as trustee, after deducting $4,000,000 in underwriting discounts and commissions payable upon the closing of this offering (regardless of whether the underwriters’ over-allotment option is exercised) and an aggregate of $2,650,000 to pay fees and expenses in connection with the closing of this offering and for working capital following the closing of this offering. The proceeds held in the trust account will initially be invested only in U.S. government treasury obligations with a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 under the Investment Company Act which invest only in direct U.S. government treasury obligations; the holding of these assets in this form is intended to be temporary and for the sole purpose of facilitating the intended business combination. To mitigate the risk that we might be deemed to be an investment company for purposes of the Investment Company Act, which risk increases the longer that we hold investments in the trust account, we may, at any time (based on our management team’s ongoing assessment of all factors related to our potential status under the Investment Company Act), instruct the trustee to liquidate the investments held in the trust account and instead to hold the funds in the trust account in cash or in an interest bearing demand deposit account at a bank. We expect that the interest earned on the trust account will be sufficient to pay taxes. We will not be permitted to withdraw any of the principal or interest held in the trust account, except for the withdrawal of interest to pay our taxes, other than excise taxes, if any, and up to $100,000 to pay dissolution expenses, as applicable, if any, until the earliest of (i) the completion of our initial business combination, (ii) the redemption of our public shares if we are unable to complete our initial business combination within the completion window, subject to applicable law, or (iii) the redemption of our public shares properly submitted in connection with a shareholder vote to approve an amendment to our amended and restated memorandum and articles of association prior to the consummation of the initial business combination (A) to modify the substance or timing of our obligation to allow redemption in connection with our initial business combination or to redeem 100% of our public shares if we have not consummated our initial business combination within the completion window or (B) with respect to any other material provisions relating to the rights of holders of Class A ordinary shares or pre-initial business combination activity.

SPAC, Trust or Escrow Account, Gross Offering Proceeds Placed, Amount

$ 206,650,000

De-SPAC, Material Potential Source of Future Dilution, Description [Text Block]

Adjusted NTBVPS excludes the effect of the consummation of our initial business combination or any related transactions or expenses. We may need to issue ordinary shares or convertible equity or debt securities in the circumstances described above, as we intend to target an initial business combination with a target company whose enterprise value is greater than the net proceeds of the offering and the sale of private placement warrants. The issuance of additional ordinary or preference shares may significantly dilute the equity interest of investors in this offering, which dilution would even further increase if the anti-dilution provisions in the Class B ordinary shares resulted in the issuance of Class A ordinary shares on a greater than one-for-one basis upon conversion of the Class B ordinary shares. Because our sponsor acquired the founder shares at a nominal price, our public shareholders will incur immediate and material dilution upon the closing of this offering, assuming no value is ascribed to the warrants included in the units. Further, the Class A ordinary shares issuable in connection with the conversion of the founder shares will result in material dilution to our public shareholders due to the anti-dilution rights of our founder shares that may result in an issuance of Class A ordinary shares on a greater than one-for-one basis upon conversion. Further, our public shareholders may experience material dilution if the $1,500,000 in working capital loans is fully advanced by the sponsor and the sponsor elects to convert the working capital loans into private placement units at $10.00 per unit, resulting in the sponsor receiving an additional 150,000 private Class A ordinary shares and 50,000 private placement warrants exercisable at $11.50 per Class A ordinary share underlying the units. Additionally, upon exercise of the private placement warrants underlying the private placement units, we will issue an aggregate of 221,667 Class A ordinary shares (including if the overallotment option is exercised in full) to be purchased by our sponsor, and CCM and Clear Street simultaneously with the closing of this offering. The exercise of such private placement warrants would cause the actual dilution to the public shareholders to be higher, particularly in certain circumstances specified in the warrant agreement where a cashless exercise of the private placement warrants is utilized along with a cashless exercise of the public warrants.

SPAC Prospectus Summary, Sponsor Compensation [Table Text Block]

The following table sets forth the payments to be received by our sponsor and its affiliates from us prior to or in connection with the completion of our initial business combination and the securities issued and to be issued by us to our sponsor or its affiliates:

Entity/Individual	Amount of Compensation to be Received or Securities Issued or to be Issued	Consideration Paid or to be Paid
Cohen & Company LLC	$10,000 per month	Office space, administrative and shared personnel support services

Columbus Circle 3 Sponsor Corporation LLC	6,666,667 Class B Ordinary Shares, or up to 7,666,667 Class B Ordinary Shares if the underwriter’s overallotment option is exercised in full.⁽¹⁾	$25,000

	265,000 Private Placement Units to be purchased simultaneously with the closing of this offering (including if the underwriters’ over-allotment option is exercised)⁽²⁾	$2,650,000 (including if the underwriters’ over-allotment option is exercised)

	Up to $300,000 in loans	Repayment of loans made to us to cover offering related and organizational expenses

	Up to $1,500,000 in private placement units into which working capital loans are convertible, at a price of $10.00 per unit at the option of the lender	Working capital loans to finance transaction costs in connection with an initial business combination

	Reimbursement for any out-of-pocket expenses related to identifying, investigating and completing an initial business combination	Services in connection with identifying, investigating and completing an initial business combination

Holders of Class B ordinary shares	Anti-dilution protection upon conversion into Class A ordinary shares at a greater than one-to-one ratio	Issuance of the Class A ordinary shares issuable in connection with the conversion of the founder shares on a greater than one-to-one basis upon conversion

Columbus Circle 3 Sponsor Corporation LLC, our officers, directors, or our or their affiliates	Finder’s fees, advisory fees, consulting fees, success fees or salaries	Any services in order to effectuate the completion of our initial business, which, if made prior to the completion of our initial business combination, will be paid from funds held outside the trust account. In addition to the Business Combination Marketing Agreement, we may engage CCM, an affiliate of our sponsor, and Clear Street, the representatives of the underwriters in this offering, as our lead financial advisors or otherwise in connection with our initial business combination and certain other transactions and pay such entities a fee in an amount that constitutes a market standard for comparable transactions; the terms of such engagement, if any, have not been determined and no written agreements exist with respect to such engagement.

Entity/Individual	Amount of Compensation to be Received or Securities Issued or to be Issued	Consideration Paid or to be Paid
CCM and Clear Street	$4,000,000	Underwriting fee used to purchase 400,000 Private Placement Units

	Up to $8,000,000 (or up to $9,800,000 if the overallotment option is exercised in full)	Business combination marketing fee

	Undetermined	Other investment banking services provided including financial advisory and placement agent fees

(1)

Subject to the non-managing sponsor investors purchasing, through the sponsor, the private placement units allocated to them in connection with the closing of this offering as described below, the sponsor will issue membership interests at a nominal purchase price of $0.003 per underlying founder share to the non-managing sponsor investors at the closing of this offering reflecting indirect interests in an aggregate 1,514,286 founder shares (including if the underwriters exercise the over-allotment option) held by the sponsor.

(2)

The non-managing sponsor investors have expressed an interest to purchase, indirectly through the purchase of non-managing membership interests, an aggregate of 265,000 private placement units (including if the underwriters’ over-allotment option is exercised) at a price of $10.00 per unit ($2,650,000 in the aggregate, including if the underwriters’ over-allotment option is exercised) in a private placement that will close simultaneously with the closing of this offering. The purchase of the non-managing sponsor membership interests is not contingent upon the participation in this offering or vice versa.

SPAC, Adjusted Net Tangible Book Value Per Share with Sources of Dilution [Table Text Block]

For each of the redemption scenarios above, the Adjusted NTBVPS was calculated as follows:

	As of March 31, 2026
	No Redemptions						25% of Maximum Redemptions						50% of Maximum Redemptions						75% of Maximum Redemptions						Maximum Redemptions
	Without Over- Allotment			With Over- Allotment			Without Over- Allotment			With Over- Allotment			Without Over- Allotment			With Over- Allotment			Without Over- Allotment			With Over- Allotment			Without Over- Allotment			With Over- Allotment
Public offering price	$	10.00		$	10.00		$	10.00		$	10.00		$	10.00		$	10.00		$	10.00		$	10.00		$	10.00		$	10.00
Net tangible book deficit before this offering		—			—			—			—			—			—			—			—			—			—
Increase attributable to public shareholders		7.37			7.39			6.78			6.80			5.85			5.88			4.16			4.19			0.18			0.18
Pro forma net tangible book value after this offering and the sale of the placement shares		7.37			7.39			6.78			6.80			5.85			5.88			4.16			4.19			0.18			0.18
Dilution to public shareholders	$	2.63			2.61			3.22			3.22			4.15			4.12			5.84			5.81			9.82			9.82
Percentage of dilution to public shareholders		26.30	%		26.10	%		32.20	%		32.20	%		41.50	%		41.20	%		58.40	%		58.10	%		98.20	%		98.20	%

	No Redemptions						25% of Maximum Redemptions						50% of Maximum Redemptions						75% of Maximum Redemptions						Maximum Redemptions
	Without Over- Allotment			With Over- Allotment			Without Over- Allotment			With Over- Allotment			Without Over- Allotment			With Over- Allotment			Without Over- Allotment			With Over- Allotment			Without Over- Allotment			With Over- Allotment
Numerator:
Net tangible book deficit before this offering	$	(14,775	)		(14,775	)		(14,775	)		(14,775	)		(14,775	)		(14,775	)		(14,775	)		(14,775	)		(14,775	)		(14,775	)
Net proceeds from this offering and the sale of the placement shares⁽¹⁾		201,495,000			231,495,000			201,495,000			231,495,000			201,495,000			231,495,000			201,495,000			231,495,000			201,495,000			231,495,000
Plus: Offering costs accrued for or paid in advance, excluded from tangible book value		34,056			34,056			34,056			34,056			34,056			34,056			34,056			34,056			34,056			34,056
Less: Overallotment liability		(158,300	)		—			(158,300	)		—			(158,300	)		—			(158,300	)		—			(158,300	)		—
Less: Amounts paid for redemptions⁽²⁾		—			—			(50,000,000	)		(57,500,000	)		(100,000,000	)		(115,000,000	)		(150,000,000	)		(172,500,000	)		(200,000,000	)		(230,000,000	)
	$	201,355,981			231,514,281			151,355,981			174,014,281			101,355,981			116,514,281			51,355,981			59,014,281			1,355,981			1,514,281
Denominator:
Ordinary shares outstanding prior to this offering		7,666,667			7,666,667			7,666,667			7,666,667			7,666,667			7,666,667			7,666,667			7,666,667			7,666,667			7,666,667
Ordinary shares forfeited if over-allotment is not exercised		(1,000,000	)		—			(1,000,000	)		—			(1,000,000	)		—			(1,000,000	)		—			(1,000,000	)		—
Ordinary shares offered		20,000,000			23,000,000			20,000,000			23,000,000			20,000,000			23,000,000			20,000,000			23,000,000			20,000,000			23,000,000
Private Placement Shares		665,000			655,000			665,000			655,000			665,000			655,000			665,000			655,000			665,000			655,000
Less: Ordinary shares redeemed		—			—			(5,000,000	)		(5,750,000	)		(10,000,000	)		(11,500,000	)		(15,000,000	)		(17,250,000	)		(20,000,000	)		(23,000,000	)
		27,331,667			31,331,667			22,331,667			25,581,667			17,331,667			19,831,667			12,331,667			14,081,667			7,331,667			8,331,667

(1)

Expenses applied against gross proceeds include offering expenses of approximately $1,155,000 and underwriting commissions of $0.20 per unit, or $4,000,000 in the aggregate (regardless of whether the underwriters’ over-allotment option is exercised), payable to CCM and Clear Street (excluding the business combination marketing fee). See “Use of Proceeds.”

(2)

If we seek shareholder approval of our initial business combination and we do not conduct redemptions in connection with our initial business combination pursuant to the tender offer rules, our sponsor, initial shareholders, directors, executive officers or their affiliates may purchase shares or public warrants in privately negotiated transactions or in the open market either prior to or following the completion of our initial business combination. In the event of any such purchases of our shares prior to the completion of our initial business combination, the number of ordinary shares subject to redemption will be reduced by the amount of any such purchases, increasing the pro forma net tangible book value per share. See “Proposed Business — Effecting Our Initial Business Combination — Permitted Purchases of Our Securities.”