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v3.21.2

Common Units (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 shares | Dec. 31, 2018 | Dec. 31, 2021 shares | Jun. 30, 2021 shares
Marketwise, LLC |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common stock split ratio |  | 1,000 |  |
Related party, minimum ownership percentage | 50.00% |  |  |
Purchase price multiplier, preceding period | 3 years |  |  |
Common Class A |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common stock, authorized (in shares) | 200,000,000 |  |  | 200,000,000
Common Class A | Marketwise, LLC |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common stock, authorized (in shares) |  |  | 10,000,000 |
Redeemable common units, percent | 20.00% |  |  |
Common Class B |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common stock, authorized (in shares) | 20,000,000 |  |  | 20,000,000
Common Class B | Marketwise, LLC |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common stock, authorized (in shares) |  |  | 10,000,000 |
Repurchase period, common units | 25 months |  |  |

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