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Policyholder Account Balances, Future Policy Benefits and Claims - Account Balances by Guaranteed Minimum Interest Rates (Details)
$ in Millions
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 26,390 $ 24,986 $ 23,723
Percentage of total account values that reset in:      
Next 12 months 99.80% 99.60%  
Greater than 12 months to 24 months 0.10% 0.30%  
Greater than 24 months 0.10% 0.10%  
Total 100.00% 100.00%  
At Guaranteed Minimum      
Percentage of total account values that reset in:      
Next 12 months 99.90% 99.80%  
Greater than 12 months to 24 months 0.00% 0.10%  
Greater than 24 months 0.10% 0.10%  
Total 100.00% 100.00%  
1-49 bps above Guaranteed Minimum      
Percentage of total account values that reset in:      
Next 12 months 98.90% 96.30%  
Greater than 12 months to 24 months 1.10% 3.00%  
Greater than 24 months 0.00% 0.70%  
Total 100.00% 100.00%  
1-49 bps above Guaranteed Minimum | Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balance above guaranteed minimum crediting rate 0.0001 0.0001  
1-49 bps above Guaranteed Minimum | Maximum      
Policyholder Account Balance [Line Items]      
Policyholder account balance above guaranteed minimum crediting rate 0.0049 0.0049  
50-99 bps above Guaranteed Minimum      
Percentage of total account values that reset in:      
Next 12 months 98.80% 93.80%  
Greater than 12 months to 24 months 1.20% 5.80%  
Greater than 24 months 0.00% 0.40%  
Total 100.00% 100.00%  
50-99 bps above Guaranteed Minimum | Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balance above guaranteed minimum crediting rate 0.0050 0.0050  
50-99 bps above Guaranteed Minimum | Maximum      
Policyholder Account Balance [Line Items]      
Policyholder account balance above guaranteed minimum crediting rate 0.0099 0.0099  
100-150 bps above Guaranteed Minimum      
Percentage of total account values that reset in:      
Next 12 months 100.00% 100.00%  
Greater than 12 months to 24 months 0.00% 0.00%  
Greater than 24 months 0.00% 0.00%  
Total 100.00% 100.00%  
100-150 bps above Guaranteed Minimum | Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balance above guaranteed minimum crediting rate 0.0100 0.0100  
100-150 bps above Guaranteed Minimum | Maximum      
Policyholder Account Balance [Line Items]      
Policyholder account balance above guaranteed minimum crediting rate 0.0150 0.0150  
Greater than 150 bps above Guaranteed Minimum      
Percentage of total account values that reset in:      
Next 12 months 100.00% 100.00%  
Greater than 12 months to 24 months 0.00% 0.00%  
Greater than 24 months 0.00% 0.00%  
Total 100.00% 100.00%  
Greater than 150 bps above Guaranteed Minimum | Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balance above guaranteed minimum crediting rate 0.0150 0.0150  
Total      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 13,598 $ 14,344  
Total | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 12,556 13,582  
Total | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 748 519  
Total | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 211 170  
Total | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 48 52  
Total | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 35 21  
Fixed accounts of variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4,431 4,689  
Fixed accounts of variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4,248 4,568  
Fixed accounts of variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 156 102  
Fixed accounts of variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 21 18  
Fixed accounts of variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 6 1  
Fixed accounts of variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed accounts of structured variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances 30 23  
Fixed accounts of structured variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 12  
Fixed accounts of structured variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 18 7  
Fixed accounts of structured variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 3  
Fixed accounts of structured variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1 1  
Fixed accounts of structured variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 5 0  
Fixed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances 6,346 6,781  
Fixed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 5,592 6,204  
Fixed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 563 402  
Fixed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 161 132  
Fixed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 21 33  
Fixed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 9 10  
Non-indexed accounts of fixed indexed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances 24 25  
Non-indexed accounts of fixed indexed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 1  
Non-indexed accounts of fixed indexed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 3  
Non-indexed accounts of fixed indexed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 7 7  
Non-indexed accounts of fixed indexed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 14 14  
Non-indexed accounts of fixed indexed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,478 1,513  
Universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1,466 1,509  
Universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 1  
Universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 10 3  
Universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2 0  
Universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Fixed accounts of variable universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances 822 838  
Fixed accounts of variable universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 782 816  
Fixed accounts of variable universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 8 4  
Fixed accounts of variable universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 7 4  
Fixed accounts of variable universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4 3  
Fixed accounts of variable universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 21 11  
Non-indexed accounts of indexed universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances 130 129  
Non-indexed accounts of indexed universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 128 126  
Non-indexed accounts of indexed universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Non-indexed accounts of indexed universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2 3  
Non-indexed accounts of indexed universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Non-indexed accounts of indexed universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Other life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances 337 346  
Other life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 337 346  
Other life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Other life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Other life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
Other life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Total      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 1,229 $ 1,395  
1% - 1.99% | Total | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.00% 1.00%  
1% - 1.99% | Total | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.99% 1.99%  
1% - 1.99% | Total | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 216 $ 646  
1% - 1.99% | Total | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 744 517  
1% - 1.99% | Total | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 197 165  
1% - 1.99% | Total | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 41 48  
1% - 1.99% | Total | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 31 19  
1% - 1.99% | Fixed accounts of variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 266 $ 289  
1% - 1.99% | Fixed accounts of variable annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.00% 1.00%  
1% - 1.99% | Fixed accounts of variable annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.99% 1.99%  
1% - 1.99% | Fixed accounts of variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 84 $ 169  
1% - 1.99% | Fixed accounts of variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 156 102  
1% - 1.99% | Fixed accounts of variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 21 18  
1% - 1.99% | Fixed accounts of variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 5 0  
1% - 1.99% | Fixed accounts of variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Fixed accounts of structured variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 30 $ 23  
1% - 1.99% | Fixed accounts of structured variable annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.00% 1.00%  
1% - 1.99% | Fixed accounts of structured variable annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.99% 1.99%  
1% - 1.99% | Fixed accounts of structured variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 3 $ 12  
1% - 1.99% | Fixed accounts of structured variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 18 7  
1% - 1.99% | Fixed accounts of structured variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 3  
1% - 1.99% | Fixed accounts of structured variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1 1  
1% - 1.99% | Fixed accounts of structured variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 5 0  
1% - 1.99% | Fixed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 883 $ 1,037  
1% - 1.99% | Fixed annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.00% 1.00%  
1% - 1.99% | Fixed annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.99% 1.99%  
1% - 1.99% | Fixed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 129 $ 460  
1% - 1.99% | Fixed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 563 402  
1% - 1.99% | Fixed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 161 132  
1% - 1.99% | Fixed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 21 33  
1% - 1.99% | Fixed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 9 10  
1% - 1.99% | Non-indexed accounts of fixed indexed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 24 $ 25  
1% - 1.99% | Non-indexed accounts of fixed indexed annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.00% 1.00%  
1% - 1.99% | Non-indexed accounts of fixed indexed annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.99% 1.99%  
1% - 1.99% | Non-indexed accounts of fixed indexed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 1  
1% - 1.99% | Non-indexed accounts of fixed indexed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 3  
1% - 1.99% | Non-indexed accounts of fixed indexed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 7 7  
1% - 1.99% | Non-indexed accounts of fixed indexed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 14 14  
1% - 1.99% | Non-indexed accounts of fixed indexed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
1% - 1.99% | Universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.00% 1.00%  
1% - 1.99% | Universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.99% 1.99%  
1% - 1.99% | Universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
1% - 1.99% | Universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Fixed accounts of variable universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 24 $ 18  
1% - 1.99% | Fixed accounts of variable universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.00% 1.00%  
1% - 1.99% | Fixed accounts of variable universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.99% 1.99%  
1% - 1.99% | Fixed accounts of variable universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 4  
1% - 1.99% | Fixed accounts of variable universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4 3  
1% - 1.99% | Fixed accounts of variable universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 2  
1% - 1.99% | Fixed accounts of variable universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Fixed accounts of variable universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 17 9  
1% - 1.99% | Non-indexed accounts of indexed universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 2 $ 3  
1% - 1.99% | Non-indexed accounts of indexed universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.00% 1.00%  
1% - 1.99% | Non-indexed accounts of indexed universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.99% 1.99%  
1% - 1.99% | Non-indexed accounts of indexed universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
1% - 1.99% | Non-indexed accounts of indexed universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Non-indexed accounts of indexed universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2 3  
1% - 1.99% | Non-indexed accounts of indexed universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Non-indexed accounts of indexed universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Other life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
1% - 1.99% | Other life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.00% 1.00%  
1% - 1.99% | Other life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 1.99% 1.99%  
1% - 1.99% | Other life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
1% - 1.99% | Other life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Other life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Other life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
1% - 1.99% | Other life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Total      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 438 $ 461  
2% - 2.99% | Total | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.00% 2.00%  
2% - 2.99% | Total | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.99% 2.99%  
2% - 2.99% | Total | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 422 $ 455  
2% - 2.99% | Total | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 0  
2% - 2.99% | Total | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 7 2  
2% - 2.99% | Total | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2 2  
2% - 2.99% | Total | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4 2  
2% - 2.99% | Fixed accounts of variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 158 $ 177  
2% - 2.99% | Fixed accounts of variable annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.00% 2.00%  
2% - 2.99% | Fixed accounts of variable annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.99% 2.99%  
2% - 2.99% | Fixed accounts of variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 158 $ 177  
2% - 2.99% | Fixed accounts of variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed accounts of variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed accounts of variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed accounts of variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed accounts of structured variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
2% - 2.99% | Fixed accounts of structured variable annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.00% 2.00%  
2% - 2.99% | Fixed accounts of structured variable annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.99% 2.99%  
2% - 2.99% | Fixed accounts of structured variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
2% - 2.99% | Fixed accounts of structured variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed accounts of structured variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed accounts of structured variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed accounts of structured variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 59 $ 67  
2% - 2.99% | Fixed annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.00% 2.00%  
2% - 2.99% | Fixed annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.99% 2.99%  
2% - 2.99% | Fixed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 59 $ 67  
2% - 2.99% | Fixed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Non-indexed accounts of fixed indexed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
2% - 2.99% | Non-indexed accounts of fixed indexed annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.00% 2.00%  
2% - 2.99% | Non-indexed accounts of fixed indexed annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.99% 2.99%  
2% - 2.99% | Non-indexed accounts of fixed indexed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
2% - 2.99% | Non-indexed accounts of fixed indexed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Non-indexed accounts of fixed indexed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Non-indexed accounts of fixed indexed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Non-indexed accounts of fixed indexed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 60 $ 56  
2% - 2.99% | Universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.00% 2.00%  
2% - 2.99% | Universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.99% 2.99%  
2% - 2.99% | Universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 54 $ 55  
2% - 2.99% | Universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 6 1  
2% - 2.99% | Universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Fixed accounts of variable universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 33 $ 35  
2% - 2.99% | Fixed accounts of variable universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.00% 2.00%  
2% - 2.99% | Fixed accounts of variable universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.99% 2.99%  
2% - 2.99% | Fixed accounts of variable universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 23 $ 30  
2% - 2.99% | Fixed accounts of variable universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 0  
2% - 2.99% | Fixed accounts of variable universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1 1  
2% - 2.99% | Fixed accounts of variable universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2 2  
2% - 2.99% | Fixed accounts of variable universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4 2  
2% - 2.99% | Non-indexed accounts of indexed universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 128 $ 126  
2% - 2.99% | Non-indexed accounts of indexed universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.00% 2.00%  
2% - 2.99% | Non-indexed accounts of indexed universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.99% 2.99%  
2% - 2.99% | Non-indexed accounts of indexed universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 128 $ 126  
2% - 2.99% | Non-indexed accounts of indexed universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Non-indexed accounts of indexed universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Non-indexed accounts of indexed universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Non-indexed accounts of indexed universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Other life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
2% - 2.99% | Other life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.00% 2.00%  
2% - 2.99% | Other life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 2.99% 2.99%  
2% - 2.99% | Other life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
2% - 2.99% | Other life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Other life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Other life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
2% - 2.99% | Other life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Total      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 6,539 $ 7,013  
3% - 3.99% | Total | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.00% 3.00%  
3% - 3.99% | Total | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.99% 3.99%  
3% - 3.99% | Total | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 6,526 $ 7,006  
3% - 3.99% | Total | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1 2  
3% - 3.99% | Total | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 7 3  
3% - 3.99% | Total | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 5 2  
3% - 3.99% | Total | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed accounts of variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 2,423 $ 2,612  
3% - 3.99% | Fixed accounts of variable annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.00% 3.00%  
3% - 3.99% | Fixed accounts of variable annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.99% 3.99%  
3% - 3.99% | Fixed accounts of variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 2,422 $ 2,611  
3% - 3.99% | Fixed accounts of variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed accounts of variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed accounts of variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1 1  
3% - 3.99% | Fixed accounts of variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed accounts of structured variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
3% - 3.99% | Fixed accounts of structured variable annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.00% 3.00%  
3% - 3.99% | Fixed accounts of structured variable annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.99% 3.99%  
3% - 3.99% | Fixed accounts of structured variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
3% - 3.99% | Fixed accounts of structured variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed accounts of structured variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed accounts of structured variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed accounts of structured variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 3,075 $ 3,344  
3% - 3.99% | Fixed annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.00% 3.00%  
3% - 3.99% | Fixed annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.99% 3.99%  
3% - 3.99% | Fixed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 3,075 $ 3,344  
3% - 3.99% | Fixed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Non-indexed accounts of fixed indexed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
3% - 3.99% | Non-indexed accounts of fixed indexed annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.00% 3.00%  
3% - 3.99% | Non-indexed accounts of fixed indexed annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.99% 3.99%  
3% - 3.99% | Non-indexed accounts of fixed indexed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
3% - 3.99% | Non-indexed accounts of fixed indexed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Non-indexed accounts of fixed indexed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Non-indexed accounts of fixed indexed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Non-indexed accounts of fixed indexed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 875 $ 888  
3% - 3.99% | Universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.00% 3.00%  
3% - 3.99% | Universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.99% 3.99%  
3% - 3.99% | Universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 869 $ 885  
3% - 3.99% | Universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 1  
3% - 3.99% | Universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 4 2  
3% - 3.99% | Universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2 0  
3% - 3.99% | Universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Fixed accounts of variable universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 134 $ 137  
3% - 3.99% | Fixed accounts of variable universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.00% 3.00%  
3% - 3.99% | Fixed accounts of variable universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.99% 3.99%  
3% - 3.99% | Fixed accounts of variable universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 128 $ 134  
3% - 3.99% | Fixed accounts of variable universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 1 1  
3% - 3.99% | Fixed accounts of variable universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 3 1  
3% - 3.99% | Fixed accounts of variable universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 2 1  
3% - 3.99% | Fixed accounts of variable universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Non-indexed accounts of indexed universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
3% - 3.99% | Non-indexed accounts of indexed universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.00% 3.00%  
3% - 3.99% | Non-indexed accounts of indexed universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.99% 3.99%  
3% - 3.99% | Non-indexed accounts of indexed universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
3% - 3.99% | Non-indexed accounts of indexed universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Non-indexed accounts of indexed universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Non-indexed accounts of indexed universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Non-indexed accounts of indexed universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Other life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 32 $ 32  
3% - 3.99% | Other life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.00% 3.00%  
3% - 3.99% | Other life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 3.99% 3.99%  
3% - 3.99% | Other life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 32 $ 32  
3% - 3.99% | Other life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Other life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Other life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
3% - 3.99% | Other life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Total      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 5,392 $ 5,475  
4% - 5.00% | Total | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 4.00% 4.00%  
4% - 5.00% | Total | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 5.00% 5.00%  
4% - 5.00% | Total | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 5,392 $ 5,475  
4% - 5.00% | Total | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Total | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Total | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Total | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 1,584 $ 1,611  
4% - 5.00% | Fixed accounts of variable annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 4.00% 4.00%  
4% - 5.00% | Fixed accounts of variable annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 5.00% 5.00%  
4% - 5.00% | Fixed accounts of variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 1,584 $ 1,611  
4% - 5.00% | Fixed accounts of variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of structured variable annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
4% - 5.00% | Fixed accounts of structured variable annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 4.00% 4.00%  
4% - 5.00% | Fixed accounts of structured variable annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 5.00% 5.00%  
4% - 5.00% | Fixed accounts of structured variable annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
4% - 5.00% | Fixed accounts of structured variable annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of structured variable annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of structured variable annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of structured variable annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 2,329 $ 2,333  
4% - 5.00% | Fixed annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 4.00% 4.00%  
4% - 5.00% | Fixed annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 5.00% 5.00%  
4% - 5.00% | Fixed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 2,329 $ 2,333  
4% - 5.00% | Fixed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Non-indexed accounts of fixed indexed annuities      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
4% - 5.00% | Non-indexed accounts of fixed indexed annuities | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 4.00% 4.00%  
4% - 5.00% | Non-indexed accounts of fixed indexed annuities | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 5.00% 5.00%  
4% - 5.00% | Non-indexed accounts of fixed indexed annuities | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
4% - 5.00% | Non-indexed accounts of fixed indexed annuities | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Non-indexed accounts of fixed indexed annuities | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Non-indexed accounts of fixed indexed annuities | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Non-indexed accounts of fixed indexed annuities | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 543 $ 569  
4% - 5.00% | Universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 4.00% 4.00%  
4% - 5.00% | Universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 5.00% 5.00%  
4% - 5.00% | Universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 543 $ 569  
4% - 5.00% | Universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of variable universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 631 $ 648  
4% - 5.00% | Fixed accounts of variable universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 4.00% 4.00%  
4% - 5.00% | Fixed accounts of variable universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 5.00% 5.00%  
4% - 5.00% | Fixed accounts of variable universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 631 $ 648  
4% - 5.00% | Fixed accounts of variable universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of variable universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of variable universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Fixed accounts of variable universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Non-indexed accounts of indexed universal life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
4% - 5.00% | Non-indexed accounts of indexed universal life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 4.00% 4.00%  
4% - 5.00% | Non-indexed accounts of indexed universal life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 5.00% 5.00%  
4% - 5.00% | Non-indexed accounts of indexed universal life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0  
4% - 5.00% | Non-indexed accounts of indexed universal life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Non-indexed accounts of indexed universal life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Non-indexed accounts of indexed universal life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Non-indexed accounts of indexed universal life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Other life insurance      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 305 $ 314  
4% - 5.00% | Other life insurance | Minimum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 4.00% 4.00%  
4% - 5.00% | Other life insurance | Maximum      
Policyholder Account Balance [Line Items]      
Range of Guaranteed Minimum Crediting Rates 5.00% 5.00%  
4% - 5.00% | Other life insurance | At Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 305 $ 314  
4% - 5.00% | Other life insurance | 1-49 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Other life insurance | 50-99 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Other life insurance | 100-150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances 0 0  
4% - 5.00% | Other life insurance | Greater than 150 bps above Guaranteed Minimum      
Policyholder Account Balance [Line Items]      
Policyholder account balances $ 0 $ 0