Sales Inducements (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Changes in Deferred Sales Inducement Activity:
Balance, beginning of period	$ 78.9us-gaap_DeferredSalesInducementsNet	$ 76.9us-gaap_DeferredSalesInducementsNet
Sales inducements deferred	5.3	2.1
Amortization charged to income	(1.9)	(0.2)
Offsets to net unrealized investment gains or losses included in AOCI	(3.7)	(3.2)
Balance, end of period	$ 78.6us-gaap_DeferredSalesInducementsNet	$ 75.6us-gaap_DeferredSalesInducementsNet

Offsets to net unrealized investment gains or (losses) included in AOCI.

No definition available.

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- Definition

Amount of any adjustments, including write-offs and the effect of dispositions and internal replacements of contracts, that increases or decreases the gross carrying amount of deferred sales inducements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 30

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6481800&loc=d3e11332-158416

+ Details

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- Definition

The amount of deferred sales inducement costs charged against earnings during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 30

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6481800&loc=d3e11332-158416

+ Details

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- Definition

The unamortized carrying amount of deferred sales inducement costs as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 30

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6481800&loc=d3e11332-158416

+ Details

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- Details

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