Statutory Requirements - Narrative (Details) - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Bermuda Jurisdiction
Statutory Accounting Practices [Line Items]
Statutory accounting practices, (in percent)	100.00%
Bermuda Jurisdiction \| Target Capital Level
Statutory Accounting Practices [Line Items]
Statutory accounting practices, (in percent)	120.00%
ACRA 1A
Statutory Accounting Practices [Line Items]
Statutory capital and surplus increasing (decreasing)	$ 164,000,000
ACRA 1A \| Bermuda Jurisdiction
Statutory Accounting Practices [Line Items]
Minimum margin of solvency required	500,000
Maximum distribution permitted to remit without the need for prior approval	$ 614,000,000	$ 1,044,000,000
ACRA 1A \| Bermuda Jurisdiction \| Athene
Statutory Accounting Practices [Line Items]
Percentage of statutory assets	1.50%
Percentage of ECR	25.00%
ALRe And AARe \| Bermuda Jurisdiction \| Athene
Statutory Accounting Practices [Line Items]
Percentage of ECR	25.00%
Minimum capital and surplus required	$ 8,000,000
ALRe And AARe \| Bermuda Jurisdiction \| Athene \| Tranche One
Statutory Accounting Practices [Line Items]
Percentage of statutory assets	2.00%
Statutory assets required	$ 500,000,000
ALRe And AARe \| Bermuda Jurisdiction \| Athene \| Tranche Two
Statutory Accounting Practices [Line Items]
Percentage of statutory assets	1.50%
Athene Annuity & Life Assurance Company \| Athene USA Corporation
Statutory Accounting Practices [Line Items]
Maximum distribution permitted to remit without the need for prior approval	$ 0	0
AAIA
Statutory Accounting Practices [Line Items]
Statutory surplus (decrease) increase	(52,000,000)	38,000,000
Athene Re USA IV \| United States Jurisdiction
Statutory Accounting Practices [Line Items]
Admitted assets	76,000,000	86,000,000
AARe
Statutory Accounting Practices [Line Items]
Statutory capital and surplus increasing (decreasing)	(847,000,000)
AARe \| Bermuda Jurisdiction
Statutory Accounting Practices [Line Items]
Maximum distribution permitted to remit without the need for prior approval	12,888,000,000	10,207,000,000
ACRA 2A
Statutory Accounting Practices [Line Items]
Statutory capital and surplus increasing (decreasing)	(45,000,000)
ACRA 2A \| Bermuda Jurisdiction
Statutory Accounting Practices [Line Items]
Maximum distribution permitted to remit without the need for prior approval	$ 2,174,000,000	$ 877,000,000

Statutory Accounting Practices, Increase (Decrease) In Statutory Capital And Surplus

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- Definition

Statutory Accounting Practices, Minimum Margin Of Solvency, Assets

+ References

No definition available.

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Statutory Accounting Practices, Minimum Margin Of Solvency, Percentage Of Enhanced Capital Requirement

+ References

No definition available.

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- Definition

Statutory Accounting Practices, Minimum Margin Of Solvency, Percentage Of Statutory Assets

+ References

No definition available.

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- Definition

Statutory Accounting Practices, Minimum Margin Of Solvency Required

+ References

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- Definition

Statutory Accounting Practices, Statutory Capital and Surplus, Increase (Decrease)

+ References

No definition available.

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- Definition

Statutory Accounting Practices, Statutory Capital and Surplus, Percentage

+ References

No definition available.

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- Definition

Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 825
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477351/944-825-50-1A

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477908/944-505-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477908/944-505-50-5

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477908/944-505-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

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- Definition

Amount of dividends that can be declared or paid without approval of regulatory agency.

+ References

No definition available.

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- Definition

Amount of statutory capital and surplus required to be maintained under prescribed or permitted statutory accounting practice.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477908/944-505-50-1

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