The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

Name:	us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Investments - Additional Information (Details)	3 Months Ended		6 Months Ended
Investments - Additional Information (Details)	Jun. 30, 2016 USD ($) Issue	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) Issue	Jun. 30, 2015 USD ($)	Dec. 31, 2015 Issue
Gain (Loss) on Investments [Line Items]
Total issues of fixed maturity portfolio \| Issue	1,573		1,573		1,565
Fixed Maturities [Member]
Gain (Loss) on Investments [Line Items]
Other than-temporary impairment, available for sale securities	$ 0	$ 0	$ 0	$ 0
Fair value of securities previously impaired	$ 56,000,000		$ 56,000,000
Percentage of investments previously impaired (less than)	1.00%		1.00%