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Derivatives (Level 3 Derivative Instruments) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012
Equity Index Options |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Fair value Liabilities | 63.7
Equity Index Options | Black-Scholes option pricing model | Minimum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Adjustment to counterparty valuations | (1.10%)
Equity Index Options | Black-Scholes option pricing model | Maximum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Adjustment to counterparty valuations | (2.50%)
Equity Index Options | Black-Scholes option pricing model | Weighted Average |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Adjustment to counterparty valuations | (1.50%)
Variable annuity benefit guarantee liabilities |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Fair value Liabilities | 441.5
Variable annuity benefit guarantee liabilities | Discounted cash flows | Minimum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders |
Mortality | 0.00%
Foreign exchange volatilities |
Index volatilities |
Variable annuity benefit guarantee liabilities | Discounted cash flows | Maximum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders |
Mortality | 4.80%
Foreign exchange volatilities |
Index volatilities |
Variable annuity benefit guarantee liabilities | Discounted cash flows | Weighted Average |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders |
Mortality | 0.90%
Foreign exchange volatilities |
Index volatilities |
Foreign Exchange Options |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Fair value Liabilities | 76.8
Foreign Exchange Options | Black-Scholes option pricing model | Minimum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Foreign exchange volatilities | (2.20%)
Foreign Exchange Options | Black-Scholes option pricing model | Maximum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Foreign exchange volatilities | (7.90%)
Foreign Exchange Options | Black-Scholes option pricing model | Weighted Average |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Foreign exchange volatilities | (3.40%)
Year One | Variable annuity benefit guarantee liabilities | Discounted cash flows | Minimum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders | 0.30%
Foreign exchange volatilities | 11.30%
Index volatilities | 13.60%
Year One | Variable annuity benefit guarantee liabilities | Discounted cash flows | Maximum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders | 3.00%
Foreign exchange volatilities | 12.50%
Index volatilities | 19.30%
Year One | Variable annuity benefit guarantee liabilities | Discounted cash flows | Weighted Average |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders | 0.50%
Foreign exchange volatilities | 12.20%
Index volatilities | 14.50%
Year Two | Variable annuity benefit guarantee liabilities | Discounted cash flows | Minimum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders | 0.20%
Foreign exchange volatilities | 10.70%
Index volatilities | 17.50%
Year Two | Variable annuity benefit guarantee liabilities | Discounted cash flows | Maximum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders | 3.00%
Foreign exchange volatilities | 13.20%
Index volatilities | 22.70%
Year Two | Variable annuity benefit guarantee liabilities | Discounted cash flows | Weighted Average |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders | 0.40%
Foreign exchange volatilities | 12.10%
Index volatilities | 19.20%
Year Three and Thereafter | Variable annuity benefit guarantee liabilities | Discounted cash flows | Minimum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders | 0.10%
Foreign exchange volatilities | 10.00%
Index volatilities | 19.90%
Year Three and Thereafter | Variable annuity benefit guarantee liabilities | Discounted cash flows | Maximum |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders | 3.00%
Foreign exchange volatilities | 15.40%
Index volatilities | 22.70%
Year Three and Thereafter | Variable annuity benefit guarantee liabilities | Discounted cash flows | Weighted Average |
Quantitative information for Level 3 Fair Value Measurements Liabilities |
Surrenders | 0.40%
Foreign exchange volatilities | 13.10%
Index volatilities | 21.80%

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- Definition This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Represents the expected equity dividends, used as an input to measure fair value. + References No definition available. + Details
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