INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2015	Jun. 30, 2017	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Income (loss) from continuing operations before income taxes, domestic							$ 2,115	$ 505	$ 924
Income (loss) from continuing operations before income taxes, foreign							140	117	114
Income tax (expense) benefit:
Current (expense) benefit							(6)	(274)	(19)
Deferred (expense) benefit							1,145	358	41
Income tax (expense) benefit	$ 101	$ (419)	$ 121		$ (298)	$ (197)	$ 1,139	84	22
Federal statutory rate, percent							35.00%
Effective Income Tax Rate Reconciliation
Expected income tax (expense) benefit							$ (789)	(218)	(363)
Noncontrolling interest							175	162	118
Non-taxable investment income (loss)							250	175	189
Tax audit interest							(6)	(22)	1
State income taxes							(3)	(8)	1
Tax settlements/Uncertain Tax Position Release				$ 77			221	0	77
Change in Tax Law							1,308	0	0
Other							(17)	(5)	(1)
Foreign Tax Authority
Income tax (expense) benefit:
Income tax (expense) benefit							$ 29	$ 31	$ 28