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Derivative Liabilities - Narrative (Details) $ in Thousands |  | 10 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 08, 2019 warrant $ / shares shares | Dec. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) shares
Derivative [Line Items] |  |  |
Gain on revaluation |  | $ 1,276,819 | $ 129,254
Altria Group, Inc. | Cronos Group, Inc. |  |  |
Derivative [Line Items] |  |  |
Ownership interest | 45.00% |  |
Altria Investment |  |  |
Derivative [Line Items] |  |  |
Shares issued (in shares) | shares | 149,831,154 |  |
Cronos Group, Inc. | Altria Group, Inc. |  |  |
Derivative [Line Items] |  |  |
Ownership percentage, if warrant exercised | 55.00% |  |
Altria Investment |  |  |
Derivative [Line Items] |  |  |
Maximum additional subscription percentage | 10.00% |  |
Derivative liability, additional subscription (in shares) | shares |  |  | 80,100,000
Altria Warrant |  |  |
Derivative [Line Items] |  |  |
Number of warrants issued | warrant | 1 |  |
Exercise price (in dollars per share) | $ / shares | $ 19.00 |  |
Gain on revaluation |  | 869,630 | $ 95,045
Pre-emptive Rights |  |  |
Derivative [Line Items] |  |  |
Exercise price (in dollars per share) | $ / shares | $ 16.25 |  |
Exercise rights, minimum ownership percentage | 20.00% |  |
Gain on revaluation |  | 81,070 | 885
Top-up Rights |  |  |
Derivative [Line Items] |  |  |
Exercise price (in dollars per share) | $ / shares | $ 16.25 |  |
Exercise rights, minimum ownership percentage | 20.00% |  |
Exercise price, volume-weighted average price, measurement period | 10 days |  |
Exercise price, volume-weighted average price, measurement period, days preceding exercise | 10 days |  |
Derivative transaction costs |  | 22,355 |
Gain on revaluation |  | $ 326,119 | $ 33,324

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