LENDING ACTIVITIES (Details - Credit quality indicators for commercial mortgage loans) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019 USD ($) loan	Dec. 31, 2018 USD ($) loan	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Commercial Mortgage Recorded Investment [Line Items]
Mortgage and other loans receivable, net	$ 45,075	$ 43,135
Allowance for credit losses	430	397	$ 379	$ 322
Total mortgage and other loans receivable	$ 45,505	$ 43,532
Debt Coverage Ratio	1.9	1.9
Average Loan to Value Ratio	57.00%	58.00%
Apartments
Commercial Mortgage Recorded Investment [Line Items]
In good standing	$ 13,263	$ 11,190
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	13,263	11,190
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	93	122
Allowance for credit losses	93	122
Offices
Commercial Mortgage Recorded Investment [Line Items]
In good standing	9,903	9,774
Restructured	90	96
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	9,993	9,870
Allowance for credit losses, Specific	2	2
Allowance for credit losses, General	141	104
Allowance for credit losses	143	106
Retail
Commercial Mortgage Recorded Investment [Line Items]
In good standing	5,479	5,645
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	5,479	5,645
Allowance for credit losses, Specific	1	0
Allowance for credit losses, General	44	51
Allowance for credit losses	45	51
Industrial
Commercial Mortgage Recorded Investment [Line Items]
In good standing	3,348	3,074
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	3,348	3,074
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	28	13
Allowance for credit losses	28	13
Hotel
Commercial Mortgage Recorded Investment [Line Items]
In good standing	2,337	2,507
Restructured	15	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	2,352	2,523
Allowance for credit losses, Specific	6	1
Allowance for credit losses, General	15	19
Allowance for credit losses	21	20
Others
Commercial Mortgage Recorded Investment [Line Items]
In good standing	519	580
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	519	580
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	5	6
Allowance for credit losses	$ 5	$ 6
Commercial mortgages
Commercial Mortgage Recorded Investment [Line Items]
Number of loans in good standing | loan	747	762
Number of loans restructured | loan	2	2
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	749	764
In good standing	$ 34,849	$ 32,770
Restructured	105	112
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	34,954	32,882
Allowance for credit losses, Specific	9	3
Allowance for credit losses, General	326	315
Allowance for credit losses	$ 335	$ 318
Percentage of loans that are current as to payments of principal and interest	100.00%	100.00%
Percentage restructured	0.00%	0.00%
Percentage 90 days or less delinquent	0.00%	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%
Commercial mortgages | Less than 65% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	$ 20,822	$ 19,204
Commercial mortgages | Less than 65% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	2,771	2,543
Commercial mortgages | Less than 65% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	173	250
Commercial mortgages | Less than 65% | Total
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	23,766	21,997
Commercial mortgages | 65% to 75% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	9,744	9,060
Commercial mortgages | 65% to 75% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	677	300
Commercial mortgages | 65% to 75% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	93	203
Commercial mortgages | 65% to 75% | Total
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	10,514	9,563
Commercial mortgages | 76% to 80% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	173	476
Commercial mortgages | 76% to 80% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	19	20
Commercial mortgages | 76% to 80% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	13	15
Commercial mortgages | 76% to 80% | Total
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	205	511
Commercial mortgages | Greater than 80% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	182	596
Commercial mortgages | Greater than 80% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	143	103
Commercial mortgages | Greater than 80% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	144	112
Commercial mortgages | Greater than 80% | Total
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	469	811
Commercial mortgages | Total | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	30,921	29,336
Commercial mortgages | Total | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	3,610	2,966
Commercial mortgages | Total | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	423	580
Commercial mortgages | Total | Total
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	$ 34,954	$ 32,882