REINSURANCE AND FINANCING TRANSACTIONS (Details) - USD ($)		9 Months Ended
	Jan. 15, 2016	Sep. 30, 2016
Debt Instrument [Line Items]
Increase in total assets		$ 2,800,000,000
Increase in assets resulting from reinsurance transaction		600,000,000
Increase in value of business acquired		280,000,000
Increase in assets associated with financing activities		$ 2,200,000,000
Golden Gate
Debt Instrument [Line Items]
Extraordinary dividend	$ 300,000,000
Financing Arrangement with Golden Gate and Syndicate if Risk Takers
Debt Instrument [Line Items]
Term of financing agreement	18 years
Financing capacity under the arrangement	$ 2,188,000,000.000
Steel City Notes | Golden Gate | Surplus Notes
Debt Instrument [Line Items]
Amount of debt issued	2,188,000,000.000
Golden Gate Surplus Notes | Steel City | Surplus Notes
Debt Instrument [Line Items]
Amount of debt issued	2,188,000,000.000
Non-recourse Funding Obligations Series | Golden Gate
Debt Instrument [Line Items]
Outstanding non-recourse funding obligations	$ 800,000,000