v3.8.0.1

Investments (Securities Pledged) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Total securities pledged | $ 16,836 | $ 15,626
Fixed maturities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Total securities pledged | 13,303 | 11,393
Trading account assets supporting insurance liabilities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Total securities pledged | 369 | 477
Other trading account assets |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Total securities pledged | 1 | 2
Separate account assets |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Total securities pledged | 2,992 | 3,386
Equity securities |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Total securities pledged | $ 171 | $ 368

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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