XML 60 R43.htm IDEA: XBRL DOCUMENT v3.4.0.3
Investments (Proceeds from Sales of Available-For-Sale Securities and the Gross Realized Gains and Gross Realized Losses) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 01, 2016
Mar. 31, 2016
[1]
Mar. 31, 2015
Investment [Line Items]      
Proceeds from sales   $ 2,267,717 $ 552,513
Gross realized gains   176,317 12,343
Gross realized losses   $ 26,461 $ 5,599
Employee Benefits Segment | Discontinued Operations, Disposed of by Sale      
Investment [Line Items]      
Investments transferred $ 146,727    
[1] 2016 includes $146,727 related to the sale of Assurant Employee Benefits mainly through reinsurance transactions.