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Loans Receivable, Net (Details - TDRs Accrual and Nonaccrual) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Financing Receivable, Impaired [Line Items]    
Financing Receivable, Troubled Debt Restructurings, Modifications, Total1 $ 259 $ 280
One- To Four-Family [Member]    
Financing Receivable, Impaired [Line Items]    
Financing Receivable, Troubled Debt Restructurings, Modifications, Total1 158 168
Home Equity [Member]    
Financing Receivable, Impaired [Line Items]    
Financing Receivable, Troubled Debt Restructurings, Modifications, Total1 $ 101 $ 112