XML 56 R45.htm IDEA: XBRL DOCUMENT v3.20.2
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
contract
Sep. 30, 2019
contract
Dec. 31, 2019
USD ($)
contract
Financing Receivable Allowance For Credit Losses [Line Items]          
Provision for Credit Loss, Expense (Reversal) $ (300,000,000)        
Loans classified in doubtful or loss risk rating $ 0   $ 0   $ 0
Number of loans modified as TDRs | contract     1 4 4
Increase in allowance for loan losses due to TDRs         $ 0
Troubled debt restructuring charge-offs         $ 0
COVID-19          
Financing Receivable Allowance For Credit Losses [Line Items]          
Provision for Credit Loss, Expense (Reversal)   $ 12,100,000