LENDING ACTIVITIES (Details - Credit quality indicators for commercial mortgage loans) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2017 USD ($) loan	Dec. 31, 2016 USD ($) loan	Sep. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)
Commercial Mortgage Recorded Investment [Line Items]
Mortgage and other loans receivable, net	$ 36,089	$ 33,240
Allowance for credit losses	345	297	$ 299	$ 308
Total mortgage and other loans receivable	$ 36,434	$ 33,537
Debt Coverage Ratio	1.8	1.9
Average Loan to Value Ratio	58.00%	58.00%
Apartments
Commercial Mortgage Recorded Investment [Line Items]
In good standing	$ 7,274	$ 6,005
Restructured	0	0
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	61	35
Allowance for credit losses	61	35
Total mortgage and other loans receivable	7,274	6,005
Offices
Commercial Mortgage Recorded Investment [Line Items]
In good standing	8,642	7,830
Restructured	15	134
90 days or less delinquent	14	0
Greater than 90 days delinquent or in process of foreclosure	40	0
Allowance for credit losses, Specific	3	3
Allowance for credit losses, General	93	72
Allowance for credit losses	96	75
Total mortgage and other loans receivable	8,711	7,964
Retail
Commercial Mortgage Recorded Investment [Line Items]
In good standing	5,367	5,179
Restructured	4	18
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	18	0
Allowance for credit losses, Specific	31	1
Allowance for credit losses, General	36	41
Allowance for credit losses	67	42
Total mortgage and other loans receivable	5,389	5,197
Industrial
Commercial Mortgage Recorded Investment [Line Items]
In good standing	2,147	1,898
Restructured	0	0
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Allowance for credit losses, Specific	0	6
Allowance for credit losses, General	8	7
Allowance for credit losses	8	13
Total mortgage and other loans receivable	2,147	1,898
Hotel
Commercial Mortgage Recorded Investment [Line Items]
In good standing	2,391	2,373
Restructured	16	16
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Allowance for credit losses, Specific	1	1
Allowance for credit losses, General	14	13
Allowance for credit losses	15	14
Total mortgage and other loans receivable	2,407	2,389
Others
Commercial Mortgage Recorded Investment [Line Items]
In good standing	2,002	1,589
Restructured	0	0
90 days or less delinquent	0	0
Greater than 90 days delinquent or in process of foreclosure	0	0
Allowance for credit losses, Specific	0	0
Allowance for credit losses, General	17	15
Allowance for credit losses	17	15
Total mortgage and other loans receivable	$ 2,002	$ 1,589
Commercial mortgages
Commercial Mortgage Recorded Investment [Line Items]
Number of loans in good standing | loan	770	784
Number of loans restructured | loan	3	4
Number of loans 90 days or less delinquent | loan	1	0
Number of loans greater than 90 days delinquent or in process of foreclosure | loan	2	0
Number of Loans | loan	776	788
In good standing	$ 27,823	$ 24,874
Restructured	35	168
90 days or less delinquent	14	0
Greater than 90 days delinquent or in process of foreclosure	58	0
Allowance for credit losses, Specific	35	11
Allowance for credit losses, General	229	183
Allowance for credit losses	$ 264	$ 194
Percentage of loans that are current as to payments of principal and interest	100.00%	99.00%
Percentage restructured	0.00%	1.00%
Percentage 90 days or less delinquent	0.00%
Percentage greater than 90 days delinquent or in foreclosure	0.00%	0.00%
Percentage Total	100.00%	100.00%
Percentage of loans with valuation allowance, Genaral	1.00%	1.00%
Percentage of loans with allowance for losses	1.00%	1.00%
Percentage of current commercial mortgages held	99.70%
Total mortgage and other loans receivable	$ 27,930	$ 25,042
Commercial mortgages | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	24,367	21,661
Commercial mortgages | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	2,869	2,835
Commercial mortgages | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	694	546
Commercial mortgages | Less than 65%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	19,355	15,924
Commercial mortgages | Less than 65% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	17,040	13,998
Commercial mortgages | Less than 65% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	1,960	1,694
Commercial mortgages | Less than 65% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	355	232
Commercial mortgages | 65% to 75%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	6,089	6,583
Commercial mortgages | 65% to 75% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	5,466	5,946
Commercial mortgages | 65% to 75% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	418	575
Commercial mortgages | 65% to 75% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	205	62
Commercial mortgages | 76% to 80%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	779	1,467
Commercial mortgages | 76% to 80% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	672	1,246
Commercial mortgages | 76% to 80% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	54	174
Commercial mortgages | 76% to 80% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	53	47
Commercial mortgages | Greater than 80%
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	1,707	1,068
Commercial mortgages | Greater than 80% | Greater than 1.2x
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	1,189	471
Commercial mortgages | Greater than 80% | 1.00X - 1.20X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	437	392
Commercial mortgages | Greater than 80% | Less than 1.00X
Commercial Mortgage Recorded Investment [Line Items]
Total mortgage and other loans receivable	$ 81	$ 205