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Contractholder Funds - Reconciliation to Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Policyholder Account Balance [Line Items]
Contractholder funds	$ 46,011	$ 40,843	$ 34,753
FIA
Policyholder Account Balance [Line Items]
Contractholder funds	26,381	24,423	22,600
Fixed Rate Annuities
Policyholder Account Balance [Line Items]
Contractholder funds	11,990	9,358	6,367
Immediate Annuities
Policyholder Account Balance [Line Items]
Contractholder funds	313	332	352
Universal Life
Policyholder Account Balance [Line Items]
Contractholder funds	2,349	2,127	1,981
Traditional Life
Policyholder Account Balance [Line Items]
Contractholder funds	5	5	5
Funding Agreements, FABN
Policyholder Account Balance [Line Items]
Contractholder funds	2,611	2,613	1,904
Federal Home Loan Bank Funding Agreements
Policyholder Account Balance [Line Items]
Contractholder funds	2,358	1,982	1,543
PRT
Policyholder Account Balance [Line Items]
Contractholder funds	$ 4	$ 3	$ 1

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Policy Holder Account Balance, Gross Liability

+ References

No definition available.

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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 29F
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (a)
-Publisher FASB
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