v3.25.2
Investments (excluding Consolidated Investment Entities) - Loans by Loan to Value (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Schedule of Loans by Loan to Value Ratio [Line Items]    
Targeted maximum amount of mortgage loans lended, percent of estimated fair value of underlying real estate 75.00%  
OneAmerica    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans $ 800  
0% - 50%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Loan to value ratio, minimum 0.00% 0.00%
Loan to value ratio, maximum 50.00% 50.00%
50% - 60%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Loan to value ratio, minimum 50.00% 50.00%
Loan to value ratio, maximum 60.00% 60.00%
60% - 70%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Loan to value ratio, minimum 60.00% 60.00%
Loan to value ratio, maximum 70.00% 70.00%
70% - 80%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Loan to value ratio, minimum 70.00% 70.00%
Loan to value ratio, maximum 80.00% 80.00%
80% and above    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Loan to value ratio, minimum 80.00% 80.00%
Year of Origination 2025 [Member] | 0% - 50%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans $ 139  
Year of Origination 2025 [Member] | 50% - 60%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 254  
Year of Origination 2025 [Member] | 60% - 70%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 31  
Year of Origination 2025 [Member] | 70% - 80%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0  
Year of Origination 2025 [Member] | 80% and above    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0  
Year of Origination 2024 | 0% - 50%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 153 $ 138
Year of Origination 2024 | 50% - 60%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 147 131
Year of Origination 2024 | 60% - 70%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 17 15
Year of Origination 2024 | 70% - 80%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2024 | 80% and above    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2023 | 0% - 50%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 92 96
Year of Origination 2023 | 50% - 60%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 209 221
Year of Origination 2023 | 60% - 70%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 40
Year of Origination 2023 | 70% - 80%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2023 | 80% and above    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2022 | 0% - 50%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 264 239
Year of Origination 2022 | 50% - 60%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 281 282
Year of Origination 2022 | 60% - 70%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 100 95
Year of Origination 2022 | 70% - 80%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2022 | 80% and above    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2021 | 0% - 50%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 243 240
Year of Origination 2021 | 50% - 60%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 217 184
Year of Origination 2021 | 60% - 70%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 64 95
Year of Origination 2021 | 70% - 80%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2021 | 80% and above    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2020 | 0% - 50%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 3,122 184
Year of Origination 2020 | 50% - 60%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 196 71
Year of Origination 2020 | 60% - 70%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2020 | 70% - 80%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Year of Origination 2020 | 80% and above    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 2 0
Year of Origination 2019 | 0% - 50%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans   2,500
Year of Origination 2019 | 50% - 60%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans   148
Year of Origination 2019 | 60% - 70%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans   2
Year of Origination 2019 | 70% - 80%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans   0
Year of Origination 2019 | 80% and above    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans   18
Total | 0% - 50%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 4,013 3,397
Total | 50% - 60%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 1,304 1,037
Total | 60% - 70%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 212 247
Total | 70% - 80%    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans 0 0
Total | 80% and above    
Schedule of Loans by Loan to Value Ratio [Line Items]    
Commercial mortgage loans $ 2 $ 18