Description of Organization and Business Operations | Note 1—Description of Organization and Business Operations dMY Technology Group, Inc. III (the “Company”) is a blank check company incorporated in Delaware on September 14, 2020. The Company was formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses (the “Business Combination”). The Company is an emerging growth company and, as such, the Company is subject to all of the risks associated with emerging growth companies. As of June 30, 2021, the Company had not commenced any operations. All activity for the period from September 14, 2020 (inception) to June 30, 2021 relates to the Company’s formation and the preparation of the initial public offering (the “Initial Public Offering”) and since the closing of the Initial Public Offering, the search for a prospective initial Business Combination. The Company will not generate any operating revenues until after the completion of its initial Business Combination, at the earliest. The Company will generate non-operating The Company’s sponsor is dMY Sponsor III, LLC, a Delaware limited liability company (the “Sponsor”). The registration statement for the Company’s Initial Public Offering was declared effective on November 12, 2020. On November 17, 2020, the Company consummated its Initial Public Offering of 30,000,000 units (“Units” and, with respect to the Class A common stock included in the Units being offered, the “Public Shares”), including the 2,500,000 Units as a result of the underwriters’ partial exercise of their over-allotment option (“the Over-Allotment Units”), at $10.00 per Unit, generating gross proceeds of $300.0 million, and incurring offering costs of approximately $17.0 million, inclusive of $10.5 million in deferred underwriting commissions (Note 5). Simultaneously with the closing of the Initial Public Offering, the Company consummated the private placement (“Private Placement”) of 4,000,000 warrants at a price of $2.00 per warrant (“Private Placement Warrants”) to the Sponsor, generating gross proceeds of $8.0 million (Note 4). Upon the closing of the Initial Public Offering and the Private Placement, $300.0 million ($10.00 per Unit) of the net proceeds of the Initial Public Offering and certain of the proceeds of the Private Placement were placed in a trust account (“Trust Account”) located in the United States with Continental Stock Transfer & Trust Company acting as trustee, and invested only in United States “government securities” within the meaning of Section 2(a)(16) of the Investment Company Act 1940, as amended (the “Investment Company Act”) having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 The Company’s management has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the sale of Private Placement Warrants, although substantially all of the net proceeds are intended to be applied generally toward consummating a Business Combination. There is no assurance that the Company will be able to complete a Business Combination successfully. The Company must complete one or more initial Business Combinations having an aggregate fair market value of at least 80% of the net assets held in the Trust Account (net of amounts disbursed to management for working capital purposes, if permitted, and excluding the amount of any deferred underwriting commissions) at the time of the agreement to enter into the initial Business Combination. However, the Company will only complete a Business Combination if the post-transaction company owns or acquires 50% or more of the voting securities of the target or otherwise acquires a controlling interest in the target sufficient for it not to be required to register as an investment company under the Investment Company Act. The Company will provide the holders (the “Public Stockholders”) of the Company’s outstanding shares of Class A common stock, par value $0.0001 per share, sold in the Initial Public Offering (the “Public Shares”) with the opportunity to redeem all or a portion of their Public Shares upon the completion of a Business Combination either (i) in connection with a stockholder meeting called to approve the Business Combination or (ii) by means of a tender offer. The decision as to whether the Company will seek stockholder approval of a Business Combination or conduct a tender offer will be made by the Company, solely in its discretion. The Public Stockholders will be entitled to redeem their Public Shares for a pro rata portion of the amount then held in the Trust Account (initially at $10.00 per Public Share). The per-share Shares will not be reduced by the deferred underwriting commissions the Company will pay to the underwriters (as discussed in Note 5). These Public Shares are recorded at a redemption value and classified as temporary equity in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Topic 480 “Distinguishing Liabilities from Equity.” The Company will proceed with a Business Combination if a majority of the shares voted are voted in favor of the Business Combination. The Company will not redeem the Public Shares in an amount that would cause its net tangible assets to be less than $5,000,001. If a stockholder vote is not required by law and the Company does not decide to hold a stockholder vote for business or other legal reasons, the Company will, pursuant to its Certificate of Incorporation (the “Certificate of Incorporation”), conduct the redemptions pursuant to the tender offer rules of the U.S. Securities and Exchange Commission (“SEC”) and file tender offer documents with the SEC prior to completing a Business Combination. If, however, stockholder approval of the transaction is required by law, or the Company decides to obtain stockholder approval for business or legal reasons, the Company will offer to redeem shares in conjunction with a proxy solicitation pursuant to the proxy rules and not pursuant to the tender offer rules. Additionally, each public stockholder may elect to redeem their Public Shares irrespective of whether they vote for or against the proposed transaction. If the Company seeks stockholder approval in connection with a Business Combination, the initial stockholders (as defined below) have agreed to vote their Founder Shares (as defined below in Note 4) and any Public Shares purchased during or after the Initial Public Offering in favor of a Business Combination. In addition, the initial stockholders have agreed to waive their redemption rights with respect to their Founder Shares and Public Shares in connection with the completion of a Business Combination. The Certificate of Incorporation provides that a public stockholder, together with any affiliate of such stockholder or any other person with whom such stockholder is acting in concert or as a “group” (as defined under Section 13 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), will be restricted from redeeming its shares with respect to more than an aggregate of 20% or more of the Public Shares, without the prior consent of the Company. The Sponsor and the Company’s officers and directors (the “initial stockholders”) have agreed not to propose an amendment to the Certificate of Incorporation to modify the substance or timing of the Company’s obligation to redeem 100% of the Public Shares if the Company does not complete a Business Combination within the Combination Period (as defined below) or with respect to any other material provisions relating to stockholders’ rights or pre-initial If the Company is unable to complete a Business Combination within 24 months from the closing of the Initial Public Offering, or November 17, 2022 (the “Combination Period”), the Company will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten business days thereafter, redeem the Public Shares, at a per-share The initial stockholders agreed to waive their rights to liquidating distributions from the Trust Account with respect to the Founder Shares if the Company fails to complete a Business Combination within the Combination Period. However, if the initial stockholders acquire Public Shares in or after the Initial Public Offering, they will be entitled to liquidating distributions from the Trust Account with respect to such Public Shares if the Company fails to complete a Business Combination within the Combination Period. The underwriters have agreed to waive their rights to the deferred underwriting commission (see Note 5) held in the Trust Account in the event the Company does not complete a Business Combination within the Combination Period and, in such event, such amounts will be included with the other funds held in the Trust Account that will be available to fund the redemption of the Public Shares. In the event of such distribution, it is possible that the per share value of the residual assets remaining available for distribution (including Trust Account assets) will be only $10.00. In order to protect the amounts held in the Trust Account, the Sponsor has agreed to be liable to the Company if and to the extent any claims by a third party (except for the Company’s independent registered public accounting firm) for services rendered or products sold to the Company, or a prospective target business with which the Company has entered into a letter of intent, confidentiality or other similar agreement or business combination agreement (a “Target”), reduce the amount of funds in the Trust Account to below the lesser of (i) $10.00 per Public Share and (ii) the actual amount per Public Share held in the Trust Account as of the date of the liquidation of the Trust Account, if less than $10.00 per Public Share due to reductions in the value of the trust assets, less taxes payable, provided that such liability will not apply to any claims by a third party or Target that executed a waiver of any and all rights to the monies held in the Trust Account (whether or not such waiver is enforceable) not will it apply to any claims under the Company’s indemnity of the underwriters of the Initial Public Offering against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “Securities Act”). The Company will seek to reduce the possibility that the Sponsor will have to indemnify the Trust Account due to claims of creditors by endeavoring to have all vendors, service providers (except for the Company’s Independent Registered Public Accounting Firm), prospective target businesses or other entities with which the Company does business, execute agreements with the Company waiving any right, title, interest or claim of any kind in or to monies held in the Trust Account. Proposed Business Combination On March 7, 2021, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Ion Trap Acquisition Inc., a Delaware corporation and a direct, newly formed wholly owned subsidiary of the Company (“Merger Sub”) and IonQ, Inc., a Delaware corporation (“IonQ”). Pursuant to the Merger Agreement, at the Effective Time, and in accordance with the Delaware General Corporation Law, as amended, Merger Sub will merge with and into IonQ (the “Merger”), with IonQ continuing as the surviving entity in the Merger and, after giving effect to the Merger, becoming a wholly owned subsidiary of the Company. See the Current Report on Form 8-K, On March 7, 2021, concurrently with the execution of the Merger Agreement, the Company entered into subscription agreements with certain investors (collectively, the “PIPE Investors”), pursuant to, and on the terms and subject to the conditions of which, the PIPE Investors have collectively subscribed for 35,000,000 shares of the Company’s Class A common stock for an aggregate purchase price equal to $350,000,000. See the Current Report on Form 8-K, Going Concern Consideration As of June 30, 2021, the Company had approximately $200 in its operating bank account, approximately $84,000 of interest income available in the Trust Account to pay for taxes and working capital deficiency of approximately $3.3 million. Further, the Company has incurred and expect to continue to incur significant costs in pursuit of its acquisition plans. Prior to the consummation of the Initial Public Offering, the Company’s liquidity needs had been satisfied through a capital contribution of $25,000 from the Sponsor to purchase the Founder Shares (as defined below), the loan under the Note from the Sponsor of approximately $121,000 (see Note 4). On December 21, 2020, the Company repaid approximately $90,000 of the outstanding Note balance. Subsequent to the consummation of the Initial Public Offering, the Company’s liquidity needs had been satisfied through the net proceeds from the consummation of the Private Placement not held in the Trust Account, and advances from an officer of $125,000. As of June 30 and $31,000 , respectively . 1 and December 31, 2020, there were no amounts outstanding under any Working Capital Loans. Based on the foregoing, management determines that the Company will not have sufficient working capital to meet its needs through the earlier of the consummation of a Business Combination or one year from this filing. The accompanying unaudited condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern, which contemplates, among other things, the realization of assets and satisfaction of liabilities in the normal course of business. The Company plans to satisfy its working capital needs through the consummation of the initial Business Combination. However, there is no guarantee that the Company will complete its Business Combination within the Combination Period. |