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Claim and Claim Adjustment Expense Reserves, Long Term Care Policyholder Reserves (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2020
Long Term Care Policyholder Reserves [Abstract] |  |  |
Pretax margin included in long term care future policy benefit reserves | $ 72 |  |
Premium deficiency in long term care future policy benefit reserves |  | $ 74 | $ 74
Lower Claim Severity [Member] |  |  |
Long Term Care Policyholder Reserves [Abstract] |  |  |
Pretax increase (decrease) in claim tax and claim adjustment expense reserves | (40) | (37) |
Lower Discount Rate Assumptions and Mortality Assumption Changes [Member] |  |  |
Long Term Care Policyholder Reserves [Abstract] |  |  |
Pretax increase (decrease) in claim tax and claim adjustment expense reserves | $ 2 | $ 46 |

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- Definition The amount of long term care future policy benefit recorded reserves in excess of the gross premium valuation (GPV) required reserves. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- References No definition available. + Details
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- Definition Amount of increase (decrease) in liability to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition Amount of expense (income) recognized due to changes in the accrued obligation to policyholders that relates to insured events. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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- Details
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Period Type: |