v3.8.0.1
Reinsurance (Narrative) (Details)
$ in Millions
12 Months Ended
Apr. 01, 2015
USD ($)
Jan. 02, 2013
USD ($)
policy
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2017
company
Effects of Reinsurance [Line Items]          
Number of major reinsurance companies | company         4
Percentage of reinsurance recoverable from major reinsurance companies         59.00%
Domestic Business, per Life          
Effects of Reinsurance [Line Items]          
Reinsurance retention policy, amount retained     $ 20 $ 30  
Hartford Life Business          
Effects of Reinsurance [Line Items]          
Reinsurance retention policy, amount retained   $ 141,000      
Business acquisition number of life insurance policies acquired reinsurance | policy   700,000      
Quote Share Reinsurance | Union Hamilton          
Effects of Reinsurance [Line Items]          
Reinsurance retention policy, reinsured risk percentage 50.00%        
Reinsurance retention policy, amount retained $ 2,900