Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details)

v3.21.2
GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details)
$ in Millions
6 Months Ended
Jun. 09, 2021
USD ($)
Jun. 30, 2021
USD ($)
Reportable_segment
Jun. 30, 2021
USD ($)
numberOfSegments
Dec. 31, 2020
USD ($)
Business Acquisition [Line Items]        
Number of Reportable Segments   4 4  
Goodwill   $ 5,316 $ 5,316 $ 1,990
TCF Financial Corporation        
Business Acquisition [Line Items]        
Goodwill $ 3,326      
Value of transaction 7,183      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles 157      
Core deposit intangible | TCF Financial Corporation        
Business Acquisition [Line Items]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles 92      
Other Intangible assets | TCF Financial Corporation        
Business Acquisition [Line Items]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 6