STATUTORY REPORTING PRACTICES AND OTHER REGULATORY MATTERS (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
STATUTORY REPORTING PRACTICES AND OTHER REGULATORY MATTERS
Total (net) effect of statutory surplus	$ (310)	$ (311)
Non-admission of goodwill
STATUTORY REPORTING PRACTICES AND OTHER REGULATORY MATTERS
Total (net) effect of statutory surplus	(310)	(311)
Insurance subsidiaries | Accounting for Letters of Credit as admitted assets
STATUTORY REPORTING PRACTICES AND OTHER REGULATORY MATTERS
Total (net) effect of statutory surplus	1,735	1,415
Insurance subsidiaries | Accounting for Red Mountain Note as admitted asset
STATUTORY REPORTING PRACTICES AND OTHER REGULATORY MATTERS
Total (net) effect of statutory surplus	435	365
Insurance subsidiaries | Reserving based on state specific actuarial practices
STATUTORY REPORTING PRACTICES AND OTHER REGULATORY MATTERS
Total (net) effect of statutory surplus	112	105
Insurance subsidiaries | Reserving difference related to a captive insurance company
STATUTORY REPORTING PRACTICES AND OTHER REGULATORY MATTERS
Total (net) effect of statutory surplus	$ (87)	$ (22)