Fair Value of Financial Instruments - Changes in the Company's Level 3 Warrants (Details) - Root, Inc. - Level 3 - Warrant - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2022 |
Dec. 31, 2021 |
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| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||
| Opening Balance | $ 6 | |
| Warrants to acquire Root's Class A common stock | 75 | |
| Total unrealized loss | (79) | $ (24) |
| Ending Balance | $ 2 | $ 6 |
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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. No definition available.
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of issuances of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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