SPAC Offering Prospectus Summary [Line Items]

SPAC Offering Forepart, Security Holder Redemptions Subject to Limitations [Flag]

true

De-SPAC Consummation Timeframe, How Extended [Text Block]

We will have until 24 months from the closing of this offering to consummate an initial business combination.

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

The 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 gross proceeds of this offering and the sale of the private placement units, a total of $200,000,000 (or $230,000,000 if the underwriters’ over-allotment option is exercised in full), will be placed in a segregated trust account located in the United States maintained by Equiniti acting as trustee, and will be invested only in U.S. government treasury bills, notes and bonds 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 and which invest solely in U.S. Treasuries or be held in an interest bearing demand deposit account. Except for all interest income that may be released to us for taxes payable, other than excise taxes, if any, none of the funds held in the trust account will be released from the trust account until the earlier of: (1) the completion of our initial business combination within the required time period; (2) our redemption of 100% of the outstanding public shares if we have not completed an initial business combination within 24 months from the closing of this offering; and (3) the redemption of any public shares properly tendered in connection with a shareholder vote to amend our amended and restated memorandum and articles of association (A) in a manner that would affect the substance or timing of our obligation to redeem 100% of our public shares if we do not complete our initial business combination within the required time period or (B) with respect to any other provision relating to our pre-business combination activity and related shareholders’ rights.

The net proceeds held in the trust account may be used as consideration to pay the sellers of a target business with which we ultimately complete our initial business combination. If our initial business combination is paid for using shares or debt securities, or not all of the funds released from the trust account are used for payment of the purchase price in connection with our business combination, we may apply the cash released from the trust account that is not applied to the purchase price for general corporate purposes, including for maintenance or expansion of operations of acquired businesses, the payment of principal or interest due on indebtedness incurred in consummating the initial business combination, to fund the purchase of other companies or for working capital. We believe that amounts not held in trust will be sufficient to pay the costs and expenses to which such proceeds are allocated. This belief is based on the fact that while we may begin preliminary due diligence of a target business in connection with an indication of interest, we intend to undertake in-depth due diligence, depending on the circumstances of the relevant prospective acquisition, only after we have negotiated and signed a letter of intent or other preliminary agreement that addresses the terms of our initial business combination. However, if our estimate of the costs of undertaking in-depth due diligence and negotiating our initial business combination is less than the actual amount necessary to do so, we may be required to raise additional capital, the amount, availability and cost of which is currently unascertainable. In this event, we could seek such additional capital through loans or additional investments from members of our Sponsor or an affiliate of our Sponsor or our executive officers and directors, but such members of our management team are not under any obligation to advance funds to, or invest in, us.

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

$ 200,000,000

SPAC, Securities Offered, Redemption Rights [Text Block]

We will provide our public shareholders with the opportunity to redeem, regardless of whether they abstain, vote for, or against, our initial business combination, all or a portion of their public shares upon the completion of our initial business combination at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the trust account as of two business days prior to the consummation of the initial business combination, including interest (which interest shall be net of taxes payable, other than excise taxes, if any) divided by the number of then issued and outstanding public shares, subject to the limitations described herein. The amount in the trust account is initially anticipated to be approximately $10.00 per public share. The per-share amount we will distribute to investors who properly redeem their shares will not be reduced by the deferred underwriting commissions we will pay to the underwriters. Our Sponsor, officers and directors have entered into a letter agreement with us, pursuant to which they have agreed to waive their redemption rights with respect to their founder shares, placement shares and any public shares they may hold in connection with the completion of our initial business combination. However, our Sponsor, officers and directors will be entitled to redemption rights with respect to any public shares held by them if we fail to consummate a business combination or liquidate within the completion window.

De-SPAC Consummation Timeframe, Extension Failure, Consequences to Sponsor [Text Block]

articles of association will provide that, to the fullest extent permitted by law: (i) no individual serving as a director or an officer, among other persons, shall have any duty, except and to the extent expressly assumed by contract, to refrain from engaging directly or indirectly in the same or similar business activities or lines of business as us, and (ii) we renounce any interest or expectancy in, or in being offered an opportunity to participate in, any potential transaction or matter which (a) may be a corporate opportunity for any director or officer, on the one hand, and us, on the other or (b) the presentation of which would breach an existing legal obligation of a director or officer to any other entity.

SPAC Offering Forepart, Adjusted Net Tangible Book Value Per Share [Table Text Block]

The following table illustrates the difference between the public offering price per unit and our net tangible book value per share (NTBV), as adjusted to give effect to this offering and assuming the redemption of our public shares at varying levels and the exercise in full and no exercise of the over-allotment option. See section entitled “Dilution” for more information.

As of August 8, 2025
Offering Price of $10.00 per Unit		25% of Maximum Redemption				50% of Maximum Redemption				75% of Maximum Redemption				Maximum Redemption
NTBV		NTBV		Difference between NTBV and Offering Price		NTBV		Difference between NTBV and Offering Price		NTBV		Difference between NTBV and Offering Price		NTBV		Difference between NTBV and Offering Price
	Assuming Full Exercise of Over-Allotment Option
$	7.09	$	6.53	$	3.47	$	5.64	$	4.36	$	4.02	$	5.98	$	0.18	$	9.82
	Assuming No Exercise of Over-Allotment Option
$	7.08	$	6.52	$	3.48	$	5.62	$	4.38	$	4.01	$	5.99	$	0.17	$	9.83

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
Silicon Valley Acquisition Sponsor LLC	7,665,900 Class B ordinary shares(1)	$25,000
	425,000 private placement units (or 455,000 if the over-allotment is exercised in full) to be purchased simultaneously with the closing of this offering	$4,250,000 (or $4,550,000 if the over-allotment option is exercised in full)
	Up to $300,000	Repayment of loans made to us to cover offering related and organizational expenses
	$25,000 per month	Office space located at 228 Hamilton Avenue, 3rd Floor, Palo Alto, California 94301, administrative and shared personnel support services
	Up to $1,500,000 in working capital loans, which loans may be convertible into private placement units at the business combination at a price of $10.00 per unit	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

(1) Each of our officers and directors, directly or indirectly, will own membership interests of our sponsor, which includes an indirect interest in an aggregate of [•] founder shares. The number of Class B ordinary shares, and the forfeiture mechanism underlying the Class B ordinary shares, has been determined in order to ensure that the Class B ordinary shares will represent 25% of the outstanding ordinary shares (excluding any shares underlying the private placement units) upon completion of this offering and the exercise of the underwriters’ over-allotment option, if any. If we increase or decrease the size of this offering pursuant to Rule 462(b) under the Securities Act, we will effect a share dividend or a share contribution back to capital, as applicable, immediately prior to the consummation of the offering, in such amount as to maintain the collective ownership of the initial shareholders, prior to this offering at approximately 25% of our issued and outstanding ordinary shares (excluding any shares underlying the private placement units) upon the consummation of this offering. The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of our initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to the adjustment as provided herein. In the case that additional Class A ordinary shares, or equity-linked securities (as described herein), are issued or deemed issued in excess of the amounts issued in this offering and related to the closing of our initial business combination, the ratio at which the Class B ordinary shares will convert into Class A ordinary shares will be adjusted (unless the holders of a majority of the issued and outstanding Class B ordinary shares agree to waive such anti-dilution adjustment with respect to any such issuance or deemed issuance) so that the number of Class A ordinary shares issuable upon conversion of all Class B ordinary shares will equal, in the aggregate, on an as-converted basis, 25% of the sum of (i) the aggregate of our issued and outstanding founder shares and public shares after this offering, plus (ii) all Class A ordinary shares and equity-linked securities issued or deemed issued, in connection with the closing of the initial business combination (excluding any shares or equity-linked securities issued, or to be issued, to any seller in the initial business

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

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

	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		7.08			7.09			6.52			6.53			5.62			5.64			4.01			4.02			0.17			0.18
Pro forms net tangible book value after this offering and the sale of the placement shares		7.08			7.09			6.52			6.53			5.62			5.64			4.01			4.02			0.17			0.18
Dilution to public shareholders	$	2.92		$	2.91		$	3.48		$	3.47		$	4.38		$	4.36		$	5.99		$	5.98		$	9.83		$	9.82
Percentage of dilution to public shareholders		29.2	%		29.1	%		34.8	%		34.7	%		43.8	%		43.6	%		59.9	%		59.8	%		98.3	%		98.2	%

	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	$	(37,417	)	$	(37,417	)	$	(37,417	)	$	(37,417	)	$	(37,417	)	$	(37,417	)	$	(37,417	)	$	(37,417	)	$	(37,417	)	$	(37,417	)
Net proceeds from this offering and the sale of the placement shares(1)		201,500,000			231,500,000			201,500,000			231,500,000			201,500,000			231,500,000			201,500,000			231,500,000			201,500,000			231,500,000
Plus: Offering costs accrued for or paid in advance, excluded from tangible book value		41,500			41,500			41,500			41,500			41,500			41,500			41,500			41,500			41,500			41,500
Less: Deferred underwriting commissions		(8,000,000	)		(9,200,000	)		(6,000,000	)		(6,900,000	)		(4,000,000	)		(4,600,000	)		(2,000,000	)		(2,300,000	)		—			—
Less: Overallotment liability		(255,400	)		—			(255,400	)		—			(255,400	)		—			(255,400	)		—			(255,400	)		—
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	)
	$	193,248,683		$	222,304,083		$	143,248,683		$	164,104,083		$	97,248,683		$	111,904,083		$	49,248,683		$	56,704,083		$	1,248,683		$	1,504,083
Denominator:
Ordinary shares outstanding prior to this offering		7,665,900			7,665,900			7,665,900			7,665,900			7,665,900			7,665,900			7,665,900			7,665,900			7,665,900			7,665,900
Ordinary shares forfeited if over-allotment is not exercised		(999,900	)		—			(999,900	)		—			(999,900	)		—			(999,900	)		—			(999,900	)		—
Ordinary shares offered and sale of placement shares		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
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	)
Placement shares		625,000			685,000			625,000			685,000			625,000			685,000			625,000			685,000			625,000			685,000
		27,291,000			31,350,900			22,291,000			25,600,900			17,291,000			19,850,900			12,291,000			14,100,900			7,291,000			8,350,900

(1) Expenses applied against gross proceeds include offering expenses of approximately $750,000 and underwriting commissions of $0.20 per unit (including any units sold pursuant to the underwriter’s option to purchase additional units), or $4,000,000 in the aggregate, payable to the underwriters in this offering (excluding deferred underwriting commissions). See “Use of Proceeds.”

(2) Upon the consummation of our initial business combination, the deferred underwriting commissions would be paid as follows: $0.40 per unit $8,000,000 in the aggregate or up to an additional $1,200,000 in the aggregate if the underwriter’s over-allotment option is exercised in full payable to the underwriters in the Proposed Offering. See also “Underwriting” for a description of compensation and other items of value payable to the underwriter.

(3) 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, officers, advisors 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 and other transactions with respect to our securities.”