Investments - Commercial Mortgage Loans by Year of Origination (Details) - Commercial $ in Millions	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Origination Year
Year one	$ 708	$ 1,631
Year two	1,620	1,361
Year three	1,354	1,819
Year four	1,801	2,296
Year five	2,275	1,162
Year six and prior	9,798	9,190
Total	17,556	17,459
LTV Less Than 65%
Origination Year
Year one	630	1,548
Year two	1,540	1,317
Year three	1,313	1,721
Year four	1,710	2,249
Year five	2,225	1,158
Year six and prior	9,709	9,056
Total	$ 17,127	$ 17,049
Debt-Service Coverage Ratio
Year one	1.65	1.73
Year two	1.73	1.77
Year three	1.76	2.11
Year four	2.16	3.49
Year five	3.71	3.33
Year six and prior	2.55	2.38
LTV 65% to 75%
Origination Year
Year one	$ 65	$ 83
Year two	73	44
Year three	39	94
Year four	86	47
Year five	41	4
Year six and prior	56	126
Total	$ 360	$ 398
Debt-Service Coverage Ratio
Year one	1.25	1.41
Year two	1.42	1.36
Year three	1.37	1.55
Year four	1.54	1.52
Year five	1.66	1.53
Year six and prior	1.45	1.58
LTV Greater Than 75%
Origination Year
Year one	$ 13	$ 0
Year two	7	0
Year three	2	4
Year four	5	0
Year five	9	0
Year six and prior	33	8
Total	$ 69	$ 12
Debt-Service Coverage Ratio
Year one	1.14	0
Year two	1.48	0
Year three	1.12	1.30
Year four	1.37	0
Year five	1.58	0
Year six and prior	2.09	1.30