LENDING ACTIVITIES (Details - Credit quality performance indicators for commercial mortgages) $ in Millions		12 Months Ended
		Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	[1]	$ 45,562	$ 46,984
Allowance for credit losses		$ 814	$ 438	$ 397	$ 322
Debt Coverage Ratio		2.2	2.0
Average Loan to Value Ratio		60.00%	56.00%
Apartments
Financing Receivable, Credit Quality Indicator [Line Items]
In good standing		$ 13,969	$ 13,698
Restructured		0	0
90 days or less delinquent		0	1
Greater than 90 days delinquent or in process of foreclosure		0	0
Mortgage and other loans receivable, net		13,969	13,699
Allowance for credit losses, Specific			0
Allowance for credit losses, General			81
Allowance for credit losses		145	81
Offices
Financing Receivable, Credit Quality Indicator [Line Items]
In good standing		10,506	10,553
Restructured		52	89
90 days or less delinquent		87	0
Greater than 90 days delinquent or in process of foreclosure		67	0
Mortgage and other loans receivable, net		10,712	10,642
Allowance for credit losses, Specific			2
Allowance for credit losses, General			153
Allowance for credit losses		267	155
Retail
Financing Receivable, Credit Quality Indicator [Line Items]
In good standing		5,144	5,332
Restructured		50	0
90 days or less delinquent		0	0
Greater than 90 days delinquent or in process of foreclosure		55	0
Mortgage and other loans receivable, net		5,249	5,332
Allowance for credit losses, Specific			1
Allowance for credit losses, General			44
Allowance for credit losses		145	45
Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
In good standing		3,766	3,663
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		3,766	3,663
Allowance for credit losses, Specific			0
Allowance for credit losses, General			30
Allowance for credit losses		53	30
Hotel
Financing Receivable, Credit Quality Indicator [Line Items]
In good standing		2,064	2,211
Restructured		4	101
90 days or less delinquent		114	0
Greater than 90 days delinquent or in process of foreclosure		86	0
Mortgage and other loans receivable, net		2,268	2,312
Allowance for credit losses, Specific			6
Allowance for credit losses, General			14
Allowance for credit losses		65	20
Others
Financing Receivable, Credit Quality Indicator [Line Items]
In good standing		460	522
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		460	522
Allowance for credit losses, Specific			0
Allowance for credit losses, General			5
Allowance for credit losses		$ 10	$ 5
Commercial mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans in good standing | loan		688	736
Number of loans restructured | loan		5	3
Number of loans 90 days or less delinquent | loan		3	1
Number of loans greater than 90 days delinquent or in process of foreclosure | loan		4	0
Number of Loans | loan		700	740
In good standing		$ 35,909	$ 35,979
Restructured		106	190
90 days or less delinquent		201	1
Greater than 90 days delinquent or in process of foreclosure		208	0
Mortgage and other loans receivable, net		36,424	36,170
Allowance for credit losses, Specific			9
Allowance for credit losses, General			327
Allowance for credit losses		$ 685	$ 336
Percentage of loans that are current as to payments of principal and interest		99.00%	99.00%
Percentage restructured		0.00%	1.00%
Percentage 90 days or less delinquent		0.00%	0.00%
Percentage greater than 90 days delinquent or in foreclosure		1.00%	0.00%
Percentage Total		100.00%	100.00%
Percentage of loans with valuation allowance, Specific			0.00%
Percentage of loans with valuation allowance, Genaral			1.00%
Percentage of loans with allowance for losses		2.00%	1.00%

[1] See Note 10 for details of balances associated with variable interest entities.