INCOME TAXES (Details - EFFECTIVE TAX RATE) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Sep. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2017
Income (loss) from continuing operations before income tax expense (benefit)
Income (loss) from continuing operations before income tax expense (benefit)		$ 1,227.0		$ 1,727.0
U.S.:
Income tax expense (benefit)		277.0		516.0
Reconciliation between actual income tax (benefit) expense and statutory U.S. federal amount computed by applying the federal income tax rate, pre-tax income (loss)
Income (loss) from continuing operations before income tax expense (benefit)		1,227.0		1,727.0
Reconciliation between actual income tax (benefit) expense and statutory U.S. federal amount computed by applying the federal income tax rate, tax expense/benefit
Income tax expense (benefit)		277.0		$ 516.0
Adjustments:
Reclassifications from accumulated other comprehensive income		248.0
Impact of Tax Act					$ 6,700.0
Valuation allowance
Increase (Decrease) in certain other valuation allowances associated with foreign jurisdictions	$ 0.0	30.0
Increase (Decrease) in certain other valuation allowances associated with certain state jurisdictions.	$ 0.0	0.0
Valuation allowance related to unrealized losses that are no more-likely-than-not to be realized		$ 0.0
Reconciliation between actual income tax (benefit) expense and statutory U.S. federal amount computed by applying the federal income tax rate, percentage of pre-tax income (loss)
U.S. federal income tax at statutory rate (as a percent)		21.00%		35.00%
Adjustments:
Amounts attributable to continuing operations (as a percent)	0.00%	22.60%	0.00%	29.90%
Accounting for Uncertainty in Income Taxes
Unrecognized tax benefits, excluding interest and penalties		$ 4,700.0			4,700.0
Unrecognized tax benefits, if recognized would not affect the effective tax rate		52.0			28.0
Unrecognized tax benefits, if recognized would favorably affect the effective tax rate		4,700.0			4,700.0
Unrecognized tax benefits, interest and penalties accrued		2,100.0			$ 2,000.0
Unrecognized tax benefits, interest net of the federal benefit (expense) and penalties		(54.0)		$ (17.0)
Decrease in Unrecognized Tax Benefits is Reasonably Possible in the next twelve months		$ 3,900.0
U.S. taxable income from life companies offset by those net operating loss carryforwards		35.00%