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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | Jun. 30, 2020 | Dec. 31, 2019
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Fair Value Disclosures [Abstract] |  |
Aggregate carrying amount of life insurance contracts and equity investments, fair value | $ 924 | $ 812

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- Definition Life Insurance Contracts And Equity Investments, Fair Value + References No definition available. + Details
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