Medical Claims Liability - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Insurance [Abstract] | |||
| Amounts recorded as an adjustment to premium revenues related to minimum HBR and return of premium programs | $ 49 | $ 25 | $ 1 |
| X | ||||||||||
- Definition Amounts recorded as an adjustment to premium revenues related to minimum HBR and return of premium programs No definition available.
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| X | ||||||||||
- References No definition available.
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