Minimum Guarantees - Assumptions and Methodologies Used to Determine GMDB (Details)	Dec. 31, 2015 Scenario
GMDB
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Data used (number of scenarios)	1,050
Discount rates	5.00%
GMDB \| Regular Equity
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Mean investment performance	10.00%
Volatility	23.00%
GMDB \| Aggressive Equity
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Mean investment performance	12.00%
Volatility	33.00%
GMDB \| Fixed, Bond, Money Market
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Mean investment performance	3.00%
Minimum \| GLWB
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Mean investment performance	0.75%
Volatility	15.00%
Lapse rate	1.00%
Maximum \| GLWB
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Mean investment performance	3.00%
Volatility	28.00%
Lapse rate	15.00%

Long-Duration Contracts, Assumptions by Product and Guarantee, Number of Investment Performance Scenarios

No definition available.

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- Definition

Percentage discount rate used to calculate present value of an expected stream of future payments, which is included in the calculation of the amount of the specified guaranteed benefit obligation as of the balance sheet date.

+ References

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-Publisher FASB
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- Definition

Estimated average rate of return on investments which is included in the calculation of the amount of the specified guaranteed benefit obligation as of the balance sheet date.

+ References

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- Definition

Anticipated rate of future terminations of contracts in force as of the balance sheet date, which is included in determining the amount of the specified guaranteed benefit obligation as of the balance sheet date.

+ References

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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.

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- Definition

Percentage rate that is indicative of an expected degree of movement against a base line index, and which is included in determining the amount of the specified guaranteed benefit obligation as of the balance sheet date.

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