LENDING ACTIVITIES (Details - Credit quality performance indicators for commercial mortgages) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan	Jun. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for credit losses	$ 641	$ 814	$ 701	$ 797	$ 794	$ 438
Debt Coverage Ratio	2.0	2.2
Average Loan to Value Ratio	58.00%	60.00%
Apartments
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	$ 14,084	$ 13,969
Allowance for credit losses	104	145
Apartments | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	14,084	13,969
Apartments | Restructured
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Apartments | 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Apartments | >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Offices
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	10,627	10,712
Allowance for credit losses	262	267
Offices | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	10,405	10,506
Offices | Restructured
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	141	52
Offices | 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	87
Offices | >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	81	67
Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	4,976	5,249
Allowance for credit losses	114	145
Retail | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	4,872	5,144
Retail | Restructured
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	49	50
Retail | 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Retail | >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	55	55
Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	3,774	3,766
Allowance for credit losses	42	53
Industrial | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	3,774	3,766
Industrial | Restructured
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Industrial | 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Industrial | >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Hotel
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	2,068	2,268
Allowance for credit losses	29	65
Hotel | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	1,932	2,064
Hotel | Restructured
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	136	4
Hotel | 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	114
Hotel | >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	86
Others
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	451	460
Allowance for credit losses	6	10
Others | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	451	460
Others | Restructured
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Others | 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	0
Others | >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	$ 0	$ 0
Commercial mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans in good standing | loan	646	688
Number of loans restructured | loan	9	5
Number of loans 90 days or less delinquent | loan	0	3
Number of loans greater than 90 days delinquent or in process of foreclosure | loan	5	4
Number of Loans | loan	660	700
Loans receivable	$ 35,980	$ 36,424
Allowance for credit losses	$ 557	$ 685
Percentage of loans that are current as to payments of principal and interest	99.00%	99.00%
Percentage restructured	1.00%	0.00%
Percentage 90 days or less delinquent	0.00%	0.00%
Percentage greater than 90 days delinquent or in foreclosure	0.00%	1.00%
Percentage Total	100.00%	100.00%
Percentage of loans with allowance for losses	2.00%	2.00%
Commercial mortgages | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	$ 35,518	$ 35,909
Commercial mortgages | Restructured
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	326	106
Commercial mortgages | 90 days or less delinquent
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	0	201
Commercial mortgages | >90 days delinquent or in process of foreclosure
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	$ 136	$ 208