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LENDING ACTIVITIES (Details - Composition of Mortgages and other loans receivable) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total mortgage and other loans receivable $ 38,887 $ 37,345    
Allowance for losses (347) (322) $ (289) $ (297)
Mortgage and other loans receivable, net 38,540 37,023    
Commercial mortgages        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total mortgage and other loans receivable 29,699 28,596    
Allowance for losses $ (274) $ (247) $ (207) $ (194)
Commercial mortgages | California        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Percentage of mortgage loans in geographic area 11.00% 12.00%    
Commercial mortgages | New York        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Percentage of mortgage loans in geographic area 22.00% 23.00%    
Residential Mortgage        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total mortgage and other loans receivable $ 5,811 $ 5,398    
Life insurance policy loans        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total mortgage and other loans receivable 2,203 2,295    
Commercial loans, other loans and notes receivable        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total mortgage and other loans receivable $ 1,174 $ 1,056