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Policyholders' Account Balances - Narrative (Details) $ in Millions | 3 Months Ended
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Sep. 30, 2024 USD ($)
Insurance [Abstract] |
Increase (decrease) policyholder account balance | $ 60

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of increase (decrease) in liability for policyholder account balance. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7A + Details
Name: | us-gaap_PolicyholderAccountBalancePeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration