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v3.25.1

Stockholders' Equity (Details) - $ / shares | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2025 | Dec. 31, 2022 | Dec. 31, 2020 | Apr. 04, 2025 | Dec. 31, 2024
Sale of Stock [Line Items] |  |  |  |  |
Common stock, authorized (in shares) | 200,000,000 |  |  |  | 200,000,000
Common stock, par value (usd per share) | $ 0.00001 |  |  |  | $ 0.00001
Common stock, issued (in shares) | 73,212,871 |  |  |  | 72,720,866
Common stock, outstanding (in shares) | 73,212,871 |  |  |  | 72,720,866
Preferred stock, authorized (in shares) | 10,000,000 |  |  |  | 10,000,000
Preferred stock, par value (usd per share) | $ 0.00001 |  |  |  | $ 0.00001
Preferred stock, issued (in shares) | 0 |  |  |  | 0
Remaining unvested warrant shares (in shares) | 3,170,834 |  |  |  |
Subsequent event |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |
Remaining unvested warrant shares (in shares) |  |  |  | 3,170,834 |
Omnibus Agreement |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |
Class of warrant common stock exercise price (usd per share) |  | $ 0.01 |  |  |
Vesting period |  | 5 years |  |  |
The Lemonade Foundation | Affiliated entity |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |
Contribution to the Lemonade Foundation (in shares) | 500,000 |  | 500,000 |  |

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