Quarterly report pursuant to Section 13 or 15(d)

NONINTEREST INCOME - Summary of Noninterest Income (Details)

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NONINTEREST INCOME - Summary of Noninterest Income (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Revenue from Contract with Customer [Abstract]        
Noninterest income from contracts with customers $ 315 $ 224 $ 794 $ 652
Noninterest income within the scope of other GAAP topics 220 206 580 530
Total noninterest income $ 535 $ 430 $ 1,374 $ 1,182