LENDING ACTIVITIES (Details - Credit quality of residential mortgages by year of vintage) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	$ 1,925	$ 1,020
Year prior	1,052	1,034
Two years prior	485	421
Three years prior	201	675
Four years prior	321	776
Five years prior	824	719
Mortgage and other loans receivable, net	4,808	4,645
780 and greater
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	1,066	522
Year prior	752	619
Two years prior	355	283
Three years prior	133	469
Four years prior	227	539
Five years prior	570	484
780 and greater | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	3,103	2,916
720 - 779
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	830	478
Year prior	255	349
Two years prior	102	103
Three years prior	51	155
Four years prior	69	180
Five years prior	177	156
720 - 779 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	1,484	1,421
660 - 719
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	29	19
Year prior	44	61
Two years prior	25	28
Three years prior	13	42
Four years prior	21	51
Five years prior	55	58
660 - 719 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	187	259
600 - 659
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	1
Year prior	1	5
Two years prior	2	6
Three years prior	3	7
Four years prior	2	4
Five years prior	13	12
600 - 659 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	21	35
Less than 600
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Year prior	0	0
Two years prior	1	1
Three years prior	1	2
Four years prior	2	2
Five years prior	9	9
Less than 600 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	$ 13	$ 14