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Reinsurance - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 01, 2024	Dec. 31, 2024	Dec. 16, 2024	Jul. 01, 2024	Jun. 30, 2024
Effects of Reinsurance [Line Items]
Reinsurance recoverable, allowance for credit loss		$ 298
Reinsurance, risk charge fees		13
Subsidiary of American National
Effects of Reinsurance [Line Items]
Funds withheld for reinsurance liabilities		$ 1,300	$ 1,300
AEL Re Bermuda Ltd
Effects of Reinsurance [Line Items]
Reinsurance agreement, liabilities recaptured, percentage	100.00%
North End Re, Reinsurance Agreement, In Force as of July 1, 2021
Effects of Reinsurance [Line Items]
Reinsurance agreement, modified coinsurance basis, percentage		70.00%
Reinsurance agreement, coinsurance basis, percentage		30.00%
Reinsurance agreement, liabilities recaptured, percentage	100.00%
Reinsurance agreement, net gain (loss) on assets and liabilities written-off	$ 762
Reinsurance Group of America Inc. (RGA)
Effects of Reinsurance [Line Items]
Ceded premiums payable				$ 3,400
Deferred gain on reinsurance agreement		$ 1,600
Amortization of deferred gain on reinsurance agreement		$ 35
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%
Freestone Re Ltd. (Freestone) | AEILIC
Effects of Reinsurance [Line Items]
Reinsurance agreement, quota share, fixed indexed and payout annuities, percentage	50.00%
Reinsurance agreement, quota share, fixed rate and fixed indexed annuities, percentage	70.00%
Freestone Re Ltd. (Freestone) | Eagle Life Insurance Company
Effects of Reinsurance [Line Items]
Reinsurance agreement, quota share, fixed indexed and payout annuities, percentage	50.00%
Reinsurance agreement, quota share, fixed rate and fixed indexed annuities, percentage	70.00%
Freestone Re Ltd. (Freestone) | American National Insurance Company (ANICO)
Effects of Reinsurance [Line Items]
Reinsurance agreement, ceded risk, in-force and future flow business					80.00%
Reinsurance agreement, ceded risk, in-force and future flow single premium immediate annuity business					70.00%
Reinsurance agreement, ceded risk, fixed deferred and equity-Indexed annuity business, issued					100.00%
Reinsurance agreement, ceded risk, fixed deferred and equity-indexed annuity business					70.00%

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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.

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Amount of allowance for credit loss on reinsurance recoverable.

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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
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-Section 45
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-Publisher FASB
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