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Deferred Policy Acquisition Costs and Deferred Sales Inducements (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Deferred Policy Acquisition Costs and Deferred Sales Inducements [Abstract] |  |  |
Deferred policy acquisition costs, increase (decrease) in amortization due to unlocking adjustment | $ (11.0) | $ (35.5) | $ (18.5)
Deferred sales inducements, increase (decrease) in amortization due to unlocking adjustment | $ (5.6) | $ (12.6) | $ (11.1)

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- Definition Deferred Policy Acquisition Costs and Deferred Sales Inducements [Abstract] + References No definition available. + Details
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- Definition Item represents adjustments to amortization through a retrospective unlocking process where amortization is adjusted to reflect current estimates of future gross profits/margins (including the impact of realized investment gains and losses) to be realized from a group of products. + References No definition available. + Details
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- Definition Item represents adjustments to amortization through a retrospective unlocking process where amortization is adjusted to reflect current estimates of future gross profits/margins (including the impact of realized investment gains and losses) to be realized from a group of products. + References No definition available. + Details
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