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Investments - Scheduled maturities of available for sale fixed maturities (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2020 USD ($)
Fair Value Percent, Fiscal Year Maturity [Abstract] |  |
Average life of ABS | 4 years |
Average life of MBS | 3 years 6 months |
Fixed maturities |  |
Amortized Cost Basis, Fiscal Year Maturity [Abstract] |  |
One year or less | $ 1,851 | [1]
After one year through five years | 10,604 | [1]
After five years through ten years | 14,125 | [1]
After ten years | 3,191 | [1]
Fixed maturities amortized cost, Subtotal | 29,771 | [1]
Collateralized loan obligations and other ABS (average life of approximately 4 years) | 11,991 | [1]
MBS (average life of approximately 3-1/2 years) | 3,847 | [1]
Amortized Cost | 45,609 | [1]
Fair Value, Fiscal Year Maturity [Abstract] |  |
One year or less | 1,874 |
After one year through five years | 11,212 |
After five years through ten years | 15,485 |
After ten years | 3,542 |
Fixed maturities fair value, Subtotal | 32,113 |
Collateralized loan obligations and other ABS (average life of approximately 4 years) | 11,822 |
MBS (average life of approximately 3-1/2 years) | 4,111 |
Fair Value | $ 48,046 |
Fair Value Percent, Fiscal Year Maturity [Abstract] |  |
One year or less | 4.00% |
After one year through five years | 23.00% |
After five years through ten years | 32.00% |
After ten years | 7.00% |
Fixed maturities fair value, Subtotal, Percent | 66.00% |
Collateralized loan obligations and other ABS (average life of approximately 4 years) | 25.00% |
MBS (average life of approximately 3-1/2 years) | 9.00% |
Fair value, Total, Percent | 100.00% |
[1] | Amortized cost, net of allowance for expected credit losses.

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