LENDING ACTIVITIES (Details - Credit quality indicators for commercial mortgage loans) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) loan	Dec. 31, 2017 USD ($) loan	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Commercial Mortgage Recorded Investment [Line Items]
Mortgage and other loans receivable, net	$ 43,135	$ 37,023
Allowance for credit losses	397	322	$ 297	$ 308
Total mortgage and other loans receivable	$ 43,532	$ 37,345
Debt Coverage Ratio	1.9	2.1
Average Loan to Value Ratio	58.00%	57.00%
Apartments
Commercial Mortgage Recorded Investment [Line Items]
In good standing	$ 11,190	$ 8,163
Restructured	0	0
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Mortgage and other loans receivable, net	11,190	8,163
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	122	72
Allowance for credit losses	122	72
Offices
Commercial Mortgage Recorded Investment [Line Items]
In good standing	9,774	8,585
Restructured	96	115
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Mortgage and other loans receivable, net	9,870	8,700
Allowance for credit losses, Specific	2	3
Allowance for credit losses, General	104	94
Allowance for credit losses	106	97
Retail
Commercial Mortgage Recorded Investment [Line Items]
In good standing	5,645	5,338
Restructured	0	23
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Mortgage and other loans receivable, net	5,645	5,361
Allowance for credit losses, Specific	0	1
Allowance for credit losses, General	51	37
Allowance for credit losses	51	38
Industrial
Commercial Mortgage Recorded Investment [Line Items]
In good standing	3,074	2,023
Restructured	0	0
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Mortgage and other loans receivable, net	3,074	2,023
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	13	6
Allowance for credit losses	13	6
Hotel
Commercial Mortgage Recorded Investment [Line Items]
In good standing	2,507	2,373
Restructured	16	16
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Mortgage and other loans receivable, net	2,523	2,389
Allowance for credit losses, Specific	1	1
Allowance for credit losses, General	19	15
Allowance for credit losses	20	16
Others
Commercial Mortgage Recorded Investment [Line Items]
In good standing	580	1,960
Restructured	0	0
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Mortgage and other loans receivable, net	580	1,960
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	6	18
Allowance for credit losses	$ 6	$ 18
Commercial mortgages
Commercial Mortgage Recorded Investment [Line Items]
Number of loans in good standing | loan	762	778
Number of loans restructured | loan	2	5
Number of loans 90 days or less delinquent | loan	0	0
Number of loans greater than 90 days delinquent or in process of foreclosure | loan	0	0
Number of Loans | loan	764	783
In good standing	$ 32,770	$ 28,442
Restructured	112	154
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Mortgage and other loans receivable, net	32,882	28,596
Allowance for credit losses, Specific	3	5
Allowance for credit losses, General	315	242
Allowance for credit losses	$ 318	$ 247
Percentage of loans that are current as to payments of principal and interest	100.00%	99.00%
Percentage restructured	0.00%	1.00%
Percentage 90 days or less delinquent	0.00%
Percentage greater than 90 days delinquent or in foreclosure	0.00%	0.00%
Percentage Total	100.00%	100.00%
Percentage of loans with valuation allowance, Genaral	1.00%	1.00%
Percentage of loans with valuation allowance, Specific	0.00%	0.00%
Percentage of loans with allowance for losses	1.00%	1.00%
Percentage of current commercial mortgages held	100.00%
Total mortgage and other loans receivable	$ 32,882	$ 28,596
Commercial mortgages | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	29,336	26,023
Commercial mortgages | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	2,966	1,964
Commercial mortgages | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	580	609
Commercial mortgages | Less than 65%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	21,997	19,876
Commercial mortgages | Less than 65% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	19,204	18,000
Commercial mortgages | Less than 65% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	2,543	1,525
Commercial mortgages | Less than 65% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	250	351
Commercial mortgages | 65% to 75%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	9,563	6,415
Commercial mortgages | 65% to 75% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	9,060	6,038
Commercial mortgages | 65% to 75% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	300	193
Commercial mortgages | 65% to 75% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	203	184
Commercial mortgages | 76% to 80%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	511	609
Commercial mortgages | 76% to 80% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	476	569
Commercial mortgages | 76% to 80% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	20	40
Commercial mortgages | 76% to 80% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	15	0
Commercial mortgages | Greater than 80%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	811	1,696
Commercial mortgages | Greater than 80% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	596	1,416
Commercial mortgages | Greater than 80% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	103	206
Commercial mortgages | Greater than 80% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	$ 112	$ 74