Acquisition of Metromile - Amounts Allocated to Intangible Assets (Details) - Metromile $ in Millions	Jul. 28, 2022 USD ($)
Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 35.5
Technology
Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 28.0
Technology \| Minimum
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Life	3 years
Technology \| Maximum
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Life	5 years
Insurance licenses
Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 7.5

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482665/350-30-50-1

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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