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Reinsurance - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Jul. 01, 2024
Effects of Reinsurance [Line Items]
Reinsurance recoverable, allowance for credit loss	$ 0	$ 0
Reinsurance, risk charge	5	8
Reinsurance Group of America Inc. (RGA)
Effects of Reinsurance [Line Items]
Ceded premiums payable			$ 3,400
Deferred gain on reinsurance agreement	1,600	$ 1,600
Amortization of deferred gain on reinsurance agreement	$ 9
Reinsurance Group of America Inc. (RGA) | American National Life Insurance Company, American National Life Insurance Company of Texas, and Garden State Life Insurance Company
Effects of Reinsurance [Line Items]
Reinsurance agreement, ceded risk, percentage			100.00%
Reinsurance Group of America Inc. (RGA) | American National Life Insurance Company of New York
Effects of Reinsurance [Line Items]
Reinsurance agreement, ceded risk, percentage			80.00%

X

- Definition

Amortization of Deferred Gain On Reinsurance Agreement

+ References

No definition available.

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- Definition

Deferred Gain On Reinsurance Agreement

+ References

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- Definition

Reinsurance Agreement, Ceded Risk, Percentage

+ References

No definition available.

+ Details

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- Definition

Reinsurance, Risk Charge Fees

+ References

No definition available.

+ Details

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- Definition

The consideration due to the assuming enterprise as of the balance sheet date under the terms of the reinsurance contract in exchange for the right to receive reimbursement from such entity for covered claims and expenses.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of allowance for credit loss on reinsurance recoverable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479838/944-20-50-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477409/944-310-45-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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