LENDING ACTIVITIES (Details - Credit quality performance indicators for commercial mortgages) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for credit losses	$ 787	$ 814	$ 787	$ 438
Debt Coverage Ratio	2.1	2.2
Average Loan to Value Ratio	59.00%	60.00%
Apartments
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	$ 14,141	$ 13,969
Allowance for credit losses	135	145
Apartments | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	14,141	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	10,642	10,712
Allowance for credit losses	270	267
Offices | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	10,433	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	68	67
Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	5,203	5,249
Allowance for credit losses	140	145
Retail | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	5,096	5,144
Retail | Restructured
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	50	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	57	55
Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	3,708	3,766
Allowance for credit losses	48	53
Industrial | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	3,708	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	2,262	2,268
Allowance for credit losses	56	65
Hotel | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	2,011	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	115	86
Others
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	462	460
Allowance for credit losses	13	10
Others | In good standing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	462	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	678	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	4	4
Number of Loans | loan	691	700
Loans receivable	$ 36,418	$ 36,424
Allowance for credit losses	$ 662	$ 685
Percentage of loans that are current as to payments of principal and interest	98.00%	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	1.00%	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	$ 35,851	$ 35,909
Commercial mortgages | Restructured
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	327	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	$ 240	$ 208