LENDING ACTIVITIES (Details - Credit quality of residential mortgages by year of vintage) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	$ 717	$ 1,020
Year prior	1,116	1,034
Two years prior	584	421
Three years prior	234	675
Four years prior	384	776
Five years prior	958	719
Mortgage and other loans receivable, net	3,993	4,645
780 and greater
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	391	522
Year prior	800	619
Two years prior	431	283
Three years prior	162	469
Four years prior	269	539
Five years prior	668	484
780 and greater | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	2,721	2,916
720 - 779
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	318	478
Year prior	269	349
Two years prior	120	103
Three years prior	54	155
Four years prior	87	180
Five years prior	204	156
720 - 779 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	1,052	1,421
660 - 719
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	8	19
Year prior	46	61
Two years prior	30	28
Three years prior	14	42
Four years prior	24	51
Five years prior	62	58
660 - 719 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	184	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	15	12
600 - 659 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	23	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