Fair Value Measurements - Schedule of Level 3 Investments at Fair Value (Details) - Debt securities - Level 3 - USD ($) $ in Millions |
3 Months Ended | |
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Mar. 31, 2023 |
Mar. 31, 2022 |
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| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||
| Balance, beginning of period | $ 10 | $ 18 |
| Unrealized gains (losses) on investments recorded in OCI | 0 | (2) |
| Balance, end of period | $ 10 | $ 16 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) 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 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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