Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions |
Mar. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Fair Value Disclosures [Abstract] | ||
| Aggregate carrying amount of life insurance contracts and equity investments, fair value | $ 878 | $ 812 |
| X | ||||||||||
- Definition Life Insurance Contracts And Equity Investments, Fair Value No definition available.
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| X | ||||||||||
- References No definition available.
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