XML 187 R99.htm IDEA: XBRL DOCUMENT v3.10.0.1
REINSURANCE - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
Reinsurer
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Effects of Reinsurance [Line Items]      
Reinsurance recoverables included in other long-term assets $ 314 $ 824  
Premiums ceded 976 969 $ 842
Benefits ceded $ 980 $ 844 $ 767
Number of reinsurers comprising other reinsurance recoverables balance | Reinsurer 10    
Cash and securities in trusts held by certain reinsurers $ 110    
100% Coinsurance Agreements      
Effects of Reinsurance [Line Items]      
Percentage of coinsurance agreement 100.00%    
Reinsurance Recoverables | Reinsurer Concentration Risk      
Effects of Reinsurance [Line Items]      
Percentage of reinsurance recoverables resulting from 100% coinsurance agreements 99.00% 33.00%  
Protective Life Insurance Company      
Effects of Reinsurance [Line Items]      
Reinsurance recoverables included in other long-term assets $ 177    
All Others      
Effects of Reinsurance [Line Items]      
Reinsurance recoverables included in other long-term assets $ 137