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Investments (Details 3) (USD $) In Millions, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
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The scheduled maturities of available for sale fixed maturities |  |
Fixed maturities amortized cost, One year or less | $ 904 |
Fixed maturities fair value, One year or less | 922 |
Fixed maturities fair value, One year or less, Percent | 3.00% |
Fixed maturities amortized cost, After one year through five years | 4,672 |
Fixed maturities fair value, After one year through five years | 5,037 |
Fixed maturities fair value, After one year through five years, Percent | 19.00% |
Fixed maturities amortized cost, After five years through ten years | 7,383 |
Fixed maturities fair value, After five years through ten years | 7,714 |
Fixed maturities fair value, After five years through ten years, Percent | 28.00% |
Fixed maturities amortized cost, After ten years | 3,660 |
Fixed maturities fair value, After ten years | 3,757 |
Fixed maturities fair value, After ten years, Percent | 14.00% |
Fixed maturities amortized cost, Subtotal | 16,619 |
Fixed maturities fair value, Subtotal | 17,430 |
Fixed maturities fair value, Subtotal, Percent | 64.00% |
Fixed maturities amortized cost, ABS | 2,737 |
Fixed maturities fair value, ABS | 2,760 |
Fixed maturities fair value, ABS, Percent | 10.00% |
Fixed maturities amortized cost, MBS | 6,628 |
Fixed maturities fair value, MBS | 7,200 |
Fixed maturities fair value, MBS, Percent | 26.00% |
Fixed Maturity [Member] |  |
The scheduled maturities of available for sale fixed maturities |  |
Amortized Cost | 25,984 | 25,366
Fair Value | $ 27,390 | $ 26,456
Fair value, Total, Percent | 100.00% |

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