Annual report pursuant to Section 13 and 15(d)

FAIR VALUES OF ASSETS AND LIABILITIES - Balance Sheet Location (Details) (Details)

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FAIR VALUES OF ASSETS AND LIABILITIES - Balance Sheet Location (Details) (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Financial Assets:    
Held-to-maturity securities $ 8,861 $ 9,070
Loans held for sale 1,275 877
Net loans and leases 79,794 74,621
Derivatives 1,057 452
Financial Liabilities:    
Deposits 98,948 82,347
Short-term borrowings 183 2,606
Long-term borrowings 8,352 9,849
Derivatives 116 104
Gross amounts of recognized assets 1,946 856
Derivative assets netting (889) (404)
Gross amounts of recognized liabilities 1,033 521
Derivative liabilities netting (917) (417)
Fair Value, Recurring    
Financial Assets:    
Trading account securities   99
Available-for-sale securities 16,485 14,149
Derivatives 1,057 452
Financial Liabilities:    
Derivatives 116 104
Derivative assets netting (889) (404)
Derivative liabilities netting (917) (417)
Level 1 | Fair Value, Recurring    
Financial Assets:    
Trading account securities   30
Available-for-sale securities 5 10
Financial Liabilities:    
Gross amounts of recognized assets 0 0
Gross amounts of recognized liabilities 0 0
Level 2 | Fair Value, Recurring    
Financial Assets:    
Trading account securities   69
Available-for-sale securities 13,510 11,090
Financial Liabilities:    
Gross amounts of recognized assets 1,903 848
Gross amounts of recognized liabilities 1,031 519
Level 3 | Fair Value, Recurring    
Financial Assets:    
Trading account securities   0
Available-for-sale securities 2,970 3,049
Financial Liabilities:    
Gross amounts of recognized assets 43 8
Gross amounts of recognized liabilities 2 2
Carrying Amount    
Financial Assets:    
Cash and short term assets 6,712 1,272
Trading account securities 62 99
Available-for-sale securities 16,485 14,149
Held-to-maturity securities 8,861 9,070
Other Securities 418 441
Loans held for sale 1,275 877
Net loans and leases 79,794 74,621
Derivatives 1,057 452
Financial Liabilities:    
Deposits 98,948 82,347
Short-term borrowings 183 2,606
Long-term borrowings 8,352 9,849
Derivatives 116 104
Fair Value    
Financial Assets:    
Cash and short term assets 6,712 1,272
Trading account securities 62 99
Available-for-sale securities 16,485 14,149
Held-to-maturity securities 9,255 9,186
Other Securities 418 441
Loans held for sale 1,275 879
Net loans and leases 80,477 75,177
Derivatives 1,057 452
Financial Liabilities:    
Deposits 99,021 82,344
Short-term borrowings 183 2,606
Long-term borrowings 8,568 10,075
Derivatives 116 104
Other securities 59 54
Fair Value | Level 1    
Financial Assets:    
Trading account securities 0 30
Available-for-sale securities 5 10
Held-to-maturity securities 0 0
Loans held for sale 0 0
Net loans and leases 0 0
Financial Liabilities:    
Deposits 0 0
Short-term borrowings 0 0
Long-term borrowings 0 0
Other securities 59 54
Fair Value | Level 2    
Financial Assets:    
Trading account securities 62 69
Available-for-sale securities 13,510 11,090
Held-to-maturity securities 9,255 9,186
Loans held for sale 1,198 781
Net loans and leases 71 55
Financial Liabilities:    
Deposits 96,656 76,790
Short-term borrowings 183 0
Long-term borrowings 7,999 9,439
Other securities 0 0
Fair Value | Level 3    
Financial Assets:    
Trading account securities 0 0
Available-for-sale securities 2,970 3,049
Held-to-maturity securities 0 0
Loans held for sale 77 98
Net loans and leases 80,406 75,122
Financial Liabilities:    
Deposits 2,365 5,554
Short-term borrowings 0 2,606
Long-term borrowings 569 636
Other securities 0 0
Amortized Cost | Carrying Amount    
Financial Assets:    
Cash and short term assets 6,712 1,272
Held-to-maturity securities 8,861 9,070
Other Securities 359 387
Net loans and leases 79,700 74,540
Financial Liabilities:    
Deposits 98,948 82,347
Short-term borrowings 183 2,606
Long-term borrowings 8,352 9,849
Lower of Cost or Market | Carrying Amount    
Financial Assets:    
Loans held for sale 77 96
Fair Value or Fair Value Option | Carrying Amount    
Financial Assets:    
Trading account securities 62 99
Available-for-sale securities 16,485 14,149
Other Securities 59 54
Loans held for sale 1,198 781
Net loans and leases 94 81
Derivatives 1,057 452
Financial Liabilities:    
Derivatives $ 116 $ 104