SUBSEQUENT EVENTS (Details) $ in Millions	1 Months Ended	6 Months Ended
	Jul. 20, 2015 USD ($)	Jun. 30, 2015 USD ($)
Private Placement [Member]
Subsequent Event [Line Items]
Number of insurance companies participating in senior unsecured private placement notes	2
Proceeds from Issuance of Private Placement	$ 75
Unsecured debt, term (in years)	10
Effective Interest Rate	3.98%
Former nine bank group unsecured revolving credit facility [Member] | Credit Facility [Domain]
Subsequent Event [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 225
MarginoverLIBORrate		1.175
Facility fee		0.225
Debt Instrument, Maturity Date		Jan. 05, 2017
Nine bank group unsecured revolving credit facility [Member] | Credit Facility [Domain]
Subsequent Event [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 300
MarginoverLIBORrate	1.00
Facility fee	0.2
Extension option on credit facility	1 year
Expansion option on credit facility	$ 150
Credit facility, maturity (in years)	4 years
Former Pnc na revolving credit facility [Member] | Credit Facility [Domain]
Subsequent Event [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 25
MarginoverLIBORrate		1.175
Facility fee		0.225
Debt Instrument, Maturity Date		Jan. 05, 2017
Pnc Na Unsecured revolving credit facility [Member] | Credit Facility [Domain]
Subsequent Event [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 35
MarginoverLIBORrate	1.00
Facility fee	0.20
Extension option on credit facility	1 year
Credit facility, maturity (in years)	4 years