Annual report pursuant to Section 13 and 15(d)

PENDING ACQUISITION OF TCF FINANCIAL CORPORATION - Narrative (Details)

v3.20.4
PENDING ACQUISITION OF TCF FINANCIAL CORPORATION - Narrative (Details)
$ in Millions
3 Months Ended 12 Months Ended
Jun. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Rate
Dec. 31, 2019
USD ($)
Business Acquisition [Line Items]      
Total assets   $ 123,038 $ 109,002
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