Investments - Commercial Mortgage Loans by Year of Origination (Details) - Commercial $ in Millions	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Origination Year
Year one	$ 1,060	$ 1,631
Year two	1,616	1,361
Year three	1,349	1,819
Year four	1,795	2,296
Year five	2,262	1,162
Year six and prior	9,481	9,190
Total	17,563	17,459
LTV Less Than 65%
Origination Year
Year one	916	1,548
Year two	1,544	1,317
Year three	1,310	1,721
Year four	1,710	2,249
Year five	2,214	1,158
Year six and prior	9,415	9,056
Total	$ 17,109	$ 17,049
Debt-Service Coverage Ratio
Year one	1.59	1.73
Year two	1.68	1.77
Year three	1.87	2.11
Year four	2.20	3.49
Year five	3.66	3.33
Year six and prior	2.55	2.38
LTV 65% to 75%
Origination Year
Year one	$ 133	$ 83
Year two	71	44
Year three	38	94
Year four	80	47
Year five	39	4
Year six and prior	48	126
Total	$ 409	$ 398
Debt-Service Coverage Ratio
Year one	1.32	1.41
Year two	1.43	1.36
Year three	1.37	1.55
Year four	1.59	1.52
Year five	1.70	1.53
Year six and prior	1.54	1.58
LTV Greater Than 75%
Origination Year
Year one	$ 11	$ 0
Year two	1	0
Year three	1	4
Year four	5	0
Year five	9	0
Year six and prior	18	8
Total	$ 45	$ 12
Debt-Service Coverage Ratio
Year one	1.20	0
Year two	2.01	0
Year three	1.17	1.30
Year four	1.81	0
Year five	2.20	0
Year six and prior	1.88	1.30