Investments - Schedule of Information About Credit Quality and Vintage Year of Commercial Mortgage Loans (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 503	$ 1,833
Year two	2,004	866
Year three	846	641
Year four	561	826
Year five	722	796
Prior	5,808	5,249
Revolving Loans	0	0
Total with ACL	$ 10,444	$ 10,211
% of Total	100.00%	100.00%
Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 476	$ 1,346
Year two	1,413	639
Year three	640	608
Year four	542	789
Year five	701	722
Prior	5,365	4,853
Revolving Loans	0	0
Total with ACL	$ 9,137	$ 8,957
% of Total	100.00%	100.00%
Commercial mortgage loans \| Non-income producing properties
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 1
Year two	50
Year three	4
Year four	8
Year five	9
Prior	1
Revolving Loans	0
Total with ACL	$ 73
% of Total	1.00%
Residential mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 27	$ 487
Year two	591	227
Year three	206	33
Year four	19	37
Year five	21	74
Prior	443	396
Revolving Loans	0	0
Total with ACL	$ 1,307	$ 1,254
% of Total	100.00%	100.00%
Residential mortgage loans \| Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 27	$ 487
Year two	589	223
Year three	202	17
Year four	10	17
Year five	13	71
Prior	414	375
Revolving Loans	0	0
Total with ACL	$ 1,255	$ 1,190
% of Total	96.00%	95.00%
Residential mortgage loans \| Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 0	$ 0
Year two	2	4
Year three	4	16
Year four	9	20
Year five	8	3
Prior	29	21
Revolving Loans	0	0
Total with ACL	$ 52	$ 64
% of Total	4.00%	5.00%
Greater than 1.20x \| Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 475	$ 1,313
Year two	1,320	615
Year three	612	538
Year four	486	594
Year five	586	434
Prior	4,841	4,591
Revolving Loans	0	0
Total with ACL	$ 8,320	$ 8,085
% of Total	91.00%	90.00%
1.00x - 1.20x \| Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 0	$ 33
Year two	43	24
Year three	24	70
Year four	48	145
Year five	55	174
Prior	379	231
Revolving Loans	0	0
Total with ACL	$ 549	$ 677
% of Total	6.00%	8.00%
Less than 1.00x \| Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 0	$ 0
Year two	0	0
Year three	0	0
Year four	0	50
Year five	51	114
Prior	144	31
Revolving Loans	0	0
Total with ACL	$ 195	$ 195
% of Total	2.00%	2.00%
Less than 70% \| Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 476	$ 1,140
Year two	1,126	508
Year three	507	521
Year four	473	466
Year five	420	345
Prior	4,448	4,296
Revolving Loans	0	0
Total with ACL	$ 7,450	$ 7,276
% of Total	81.00%	81.00%
70% - 80% \| Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 0	$ 206
Year two	247	129
Year three	130	62
Year four	44	221
Year five	180	353
Prior	700	316
Revolving Loans	0	0
Total with ACL	$ 1,301	$ 1,287
% of Total	14.00%	14.00%
80% - 100% \| Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 0	$ 0
Year two	40	0
Year three	1	25
Year four	25	46
Year five	46	24
Prior	132	151
Revolving Loans	0	0
Total with ACL	$ 244	$ 246
% of Total	3.00%	3.00%
Greater than 100% \| Commercial mortgage loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	$ 0	$ 0
Year two	0	2
Year three	2	0
Year four	0	56
Year five	55	0
Prior	85	90
Revolving Loans	0	0
Total with ACL	$ 142	$ 148
% of Total	2.00%	2.00%

Percentage, before allowance for credit loss, of financing receivable to total financing receivable.

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