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Merger Transaction - Schedule of Common Stock Outstanding (Details) - shares |  | 6 Months Ended
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May 03, 2022 | Jun. 30, 2022
Business Acquisition, Equity Interests Issued or Issuable [Line Items] |  |
Legacy NuScale Equityholders (shares) | 178,396,711 |
PIPE Shares (shares) | 23,700,002 |
Total Shares at Closing (excluding shares below) (shares) | 220,368,091 |
Remaining NuScale Consideration Shares - upon Exercise of NuScale Corp Options (shares) | 14,742,933 | 775,094
Other - Earn Out Shares (shares) | 1,643,924 |
Total Shares (shares) | 236,754,948 |
Stock converted, reverse recapitalization, percentage of total shares outstanding | 81.00% |
Stock issued during period, shares, reverse recapitalization, percentage of total shares outstanding | 10.80% |
% | 100.00% |
Spring Valley |  |
Business Acquisition, Equity Interests Issued or Issuable [Line Items] |  |
Stock issued during period, acquisitions (shares) | 18,271,378 |
Stock issued during period, shares, acquisitions, percentage of total shares outstanding | 8.30% |
Spring Valley Class A Shareholders |  |
Business Acquisition, Equity Interests Issued or Issuable [Line Items] |  |
Stock issued during period, acquisitions (shares) | 14,400,369 |
Stock issued during period, shares, acquisitions, percentage of total shares outstanding | 6.50% |
Spring Valley Founders |  |
Business Acquisition, Equity Interests Issued or Issuable [Line Items] |  |
Stock issued during period, acquisitions (shares) | 3,871,009 |
Stock issued during period, shares, acquisitions, percentage of total shares outstanding | 1.80% |

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