XML 58 R45.htm IDEA: XBRL DOCUMENT v3.8.0.1
INVESTMENTS (Reverse Repurchase Agreements) (Details) - USD ($)
$ in Millions
Mar. 31, 2018
Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]    
Value of reverse repurchase agreements $ 24 $ 37
Minimum required collateral for reverse repurchase agreements, expressed as a percentage of loan principal 102.00%