Reinsurance, Per Risk Limit, Amount

No definition available.

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- Definition

Reinsurance Program, Minimum Losses Threshold

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Ratio of insurance contracts that are subject to reinsurance participation to all contracts in force.

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

+ Details

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount per event of risk undertaken originally by insurer that is not ceded to reinsurer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479838/944-20-50-3

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Amount per event of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount per policy of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer.

+ References

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of risk undertaken originally by insurer ceded to reinsurer.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after effects of reinsurance, of expense for claims incurred in the current reporting period and related claims settlement costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 40
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+ Details

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Balance Type:	debit
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- Definition

Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs.

+ References

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Unpaid Loss and Loss Adjustment Expense - Additional Information (Details) - USD ($)				3 Months Ended	6 Months Ended
	Jul. 01, 2024	Jul. 01, 2023	Jul. 01, 2022	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023
Effects of Reinsurance [Line Items]
Favorable development on net loss and LAE reserves					$ (8,600,000)	$ (1,300,000)
Current accident year incurred loss and LAE					145,000,000.0	$ 140,800,000
Reinsurance program, minimum losses threshold			$ 80,000,000
Reinsurance, per risk limit, amount		$ 750,000
Reinsurance, excess retention, amount reinsured, per event		5,000,000
Subsequent event
Effects of Reinsurance [Line Items]
Reinsurance, excess retention, amount reinsured, per event	$ 10,000,000
Customer Investment Agreement \| Line of Credit
Effects of Reinsurance [Line Items]
Interest expense				$ 1,000,000.0	$ 1,500,000
Reinsurance Contract [Axis]: Automatic Facultative Property Per Risk Excess of Loss \| Lemonade Insurance Company
Effects of Reinsurance [Line Items]
Reinsurance, excess retention, amount reinsured, per policy		3,000,000
Reinsurance Contract [Axis]: Automatic Facultative Property Per Risk Excess of Loss Reinsurance \| Lemonade Insurance Company
Effects of Reinsurance [Line Items]
Reinsurance, excess retention, amount reinsured, per policy		$ 10,000,000
Reinsurance, excess retention, percentage		100.00%
Reinsurance Contract [Axis]: Excess of Loss Reinsurance Contract
Effects of Reinsurance [Line Items]
Initial limit for each loss occurrence		$ 50,000,000,000,000
Reinsurance, excess retention, amount reinsured, per event		80,000,000
Reinsurance Contract [Axis]: Premiums and Losses to Reinsurers
Effects of Reinsurance [Line Items]
Reinsurance, reinsured risk, percentage			30.00%
Reinsurance Contract [Axis]: Property Per Risk Excess of Loss Reinsurance
Effects of Reinsurance [Line Items]
Reinsurance, excess retention, amount reinsured, per policy		$ 2,250,000
Reinsurance, excess retention, percentage		100.00%
Reinsurance Contract [Axis]: Property Per Risk Excess of Loss Reinsurance \| Maximum
Effects of Reinsurance [Line Items]
Reinsurance, excess retention, amount reinsured, per policy		$ 750,000
Reinsurance Contract [Axis]: Proportional Reinsurance Contracts
Effects of Reinsurance [Line Items]
Percent of contracts subject to participation through reinsurance		55.00%	55.00%