Number Of Shared Directors

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- Definition

Stock Issued During Period, Issued For Charitable Contribution, Fair Value

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- Definition

Stock Issued During Period, Shares, Issued for Charitable Contribution

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- Definition

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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- Definition

Noncash charitable contributions made by the entity during the period.

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- Definition

Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Related Party Transactions (Details)		12 Months Ended
Related Party Transactions (Details)	Feb. 18, 2020 shares	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Due to (from) related parties		$ 0	$ 0
Common shares contribution to Lemonade Foundation		0	12,200,000	$ 0
Key stockholder \| Travel related expenses
Related Party Transaction [Line Items]
Expenses with related parties		$ 100,000	$ 100,000	300,000
Affiliated entity \| The Lemonade Foundation
Related Party Transaction [Line Items]
Number of shared directors \| segment		2
Contribution to the Lemonade Foundation (in shares) \| shares	500,000		500,000
Contribution of common stock to related party, fair value (usd per share) \| $ / shares			$ 24.36
Common shares contribution to Lemonade Foundation			$ 12,200,000
Due from related party		$ 0	100,000
Affiliated entity \| Rental expense
Related Party Transaction [Line Items]
Expenses with related parties		$ 100,000	$ 100,000	$ 100,000