Quarterly report pursuant to Section 13 or 15(d)

PENDING ACQUISITION OF TCF FINANCIAL CORPORATION - Narrative (Details)

v3.21.1
PENDING ACQUISITION OF TCF FINANCIAL CORPORATION - Narrative (Details)
$ in Millions
3 Months Ended
Sep. 30, 2021
USD ($)
Mar. 31, 2021
USD ($)
Rate
Dec. 31, 2020
USD ($)
Business Acquisition [Line Items]      
Total Assets   $ 125,768 $ 123,038
Series C Non-Cumulative Perpetual Preferred Stock      
Business Acquisition [Line Items]      
Preferred Stock, Dividend Rate, Percentage | Rate   5.875%  
TCF Financial Corporation      
Business Acquisition [Line Items]      
Total Assets     $ 47,800
Forecast | TCF Financial Corporation | Series C Non-Cumulative Perpetual Preferred Stock      
Business Acquisition [Line Items]      
Preferred Stock, Dividend Rate, Percentage 5.70%    
TCF Financial Corporation | Forecast      
Business Acquisition [Line Items]      
Value of transaction $ 6,000    
TCF Financial Corporation | Forecast | Common Stock      
Business Acquisition [Line Items]      
Share issuance ratio 3.0028    
TCF Financial Corporation | Forecast | Newly created series of preferred stock      
Business Acquisition [Line Items]      
Share issuance ratio 1