Investments - Schedule of Residential Loans Segregated by Aging of Loans (By Year of Origination) (Details) - Residential Mortgage - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Credit Quality Indicator Current Year [Abstract]
Year one	$ 964	$ 1,585
Year two	1,832	742
Year three	626	348
Year four	329	839
Year five	792	756
Prior	1,120	447
Total	5,663	4,717
Credit Quality Indicator Prior Year [Abstract]
Year one	964	1,585
Year two	1,832	742
Year three	626	348
Year four	329	839
Year five	792	756
Prior	1,120	447
Total	5,663	4,717
Current (less than 30 days past due)
Credit Quality Indicator Current Year [Abstract]
Year one	960	1,568
Year two	1,813	736
Year three	603	327
Year four	307	798
Year five	749	731
Prior	1,062	419
Total	5,494	4,579
Credit Quality Indicator Prior Year [Abstract]
Year one	960	1,568
Year two	1,813	736
Year three	603	327
Year four	307	798
Year five	749	731
Prior	1,062	419
Total	5,494	4,579
30-89 days past due
Credit Quality Indicator Current Year [Abstract]
Year one	4	15
Year two	10	2
Year three	5	17
Year four	1	29
Year five	6	4
Prior	14	3
Total	40	70
Credit Quality Indicator Prior Year [Abstract]
Year one	4	15
Year two	10	2
Year three	5	17
Year four	1	29
Year five	6	4
Prior	14	3
Total	40	70
90 days or more past due
Credit Quality Indicator Current Year [Abstract]
Year one	0	2
Year two	9	4
Year three	18	4
Year four	21	12
Year five	37	21
Prior	44	25
Total	129	68
Credit Quality Indicator Prior Year [Abstract]
Year one	0	2
Year two	9	4
Year three	18	4
Year four	21	12
Year five	37	21
Prior	44	25
Total	$ 129	$ 68

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Credit Quality Indicator Prior Year

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-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 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

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Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

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Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

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