LENDING ACTIVITIES (Details - Credit quality of residential mortgages by year of vintage) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	$ 187	$ 1,020
Year prior	1,201	1,034
Two years prior	772	421
Three years prior	314	675
Four years prior	502	776
Five years prior	1,183	719
Mortgage and other loans receivable, net	4,159	4,645
780 and greater
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	111	522
Year prior	873	619
Two years prior	568	283
Three years prior	217	469
Four years prior	357	539
Five years prior	836	484
780 and greater | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	2,962	2,916
720 - 779
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	74	478
Year prior	280	349
Two years prior	163	103
Three years prior	79	155
Four years prior	111	180
Five years prior	250	156
720 - 779 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	957	1,421
660 - 719
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	2	19
Year prior	47	61
Two years prior	37	28
Three years prior	14	42
Four years prior	30	51
Five years prior	71	58
660 - 719 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	201	259
600 - 659
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	1
Year prior	1	5
Two years prior	3	6
Three years prior	3	7
Four years prior	2	4
Five years prior	17	12
600 - 659 | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Mortgage and other loans receivable, net	26	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