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Future Policy Benefits - Liability For Future Policy Benefit Expected Future Policy Benefit Undiscounted (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Jun. 30, 2022
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Liability For Future Policy Benefit, Expected Future Policy Benefit, Discounted [Abstract] |  |
Expected future benefit payments |  | $ 2,686
Expected future gross premiums |  | 1,091
Traditional Life |  |
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted [Abstract] |  |
Expected future benefit payments | $ 3,027 | 3,201
Expected future gross premiums | 1,114 | 1,245
Liability For Future Policy Benefit, Expected Future Policy Benefit, Discounted [Abstract] |  |
Expected future benefit payments | 2,089 |
Expected future gross premiums | 803 |
Immediate Annuities |  |
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted [Abstract] |  |
Expected future benefit payments | 3,361 | 3,516
Expected future gross premiums | 0 | 0
Liability For Future Policy Benefit, Expected Future Policy Benefit, Discounted [Abstract] |  |
Expected future benefit payments | 1,411 | 1,907
Expected future gross premiums | 0 | 0
PRT |  |
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted [Abstract] |  |
Expected future benefit payments | 4,724 | 2,265
Expected future gross premiums | 0 | 0
Liability For Future Policy Benefit, Expected Future Policy Benefit, Discounted [Abstract] |  |
Expected future benefit payments | 3,161 | 1,652
Expected future gross premiums | $ 0 | $ 0

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- Definition Liability For Future Policy Benefit, Expected Future Policy Benefit, Discounted + References No definition available. + Details
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- Definition Liability For Future Policy Benefit, Expected Future Policy Benefit, Discounted, Before Reinsurance + References No definition available. + Details
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- Definition Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted + References No definition available. + Details
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- Definition Amount, before effect of reinsurance, of discounted balance for expected future gross premium component of liability for future policy benefit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
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- Definition Amount, before effect of reinsurance, of undiscounted balance for expected future gross premium component of liability for future policy benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
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- Definition Amount, before effect of reinsurance, of undiscounted balance for expected future policy benefit and expense component of liability for future policy benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + Details
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