XML 51 R39.htm IDEA: XBRL DOCUMENT v3.20.2
Fair Value Measurements - Fair Value Measurement Inputs and Valuation Techniques (Details) - IRLCs - Not Designated as Hedging Instrument
Sep. 30, 2020
Dec. 31, 2019
Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value rates, IRLCs 0.41 0.56
Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value rates, IRLCs 1 1
Weighted average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value rates, IRLCs 0.67 0.78