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Fair Value - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Corporate bonds | $ 9,088 | $ 9,203
Interest rate & other derivative — non-qualifying hedges | 149 | 3
Fair Value, Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Corporate bonds | 9,088 | 9,203
Interest rate & other derivative — non-qualifying hedges | 149 |
Fair Value, Recurring | Corporate bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Corporate bonds | 558 | 608
Fair Value, Recurring | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Corporate bonds | 176 | 207
Interest rate & other derivative — non-qualifying hedges | 1 |
Fair Value, Recurring | Level 3 | Corporate bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Corporate bonds | $ 176 | $ 207

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