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Capital Stock - Schedule of Common Shares Issued (Details) - shares |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 23, 2019 | Mar. 08, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Altria Investment |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  | 149,831,154 |  |  |
Common Shares |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  | 0 | 155,773,757 | 15,677,143
Common Shares | Altria Investment |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  | 0 | 149,831,154 | 0
Common Shares | Redwood Acquisition |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  | 0 | 5,086,586 | 0
Common Shares | Private Placements |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) | 856,017 |  | 0 | 856,017 | 0
Common Shares | Bought Deal Offerings |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  | 0 | 0 | 15,677,143

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