Annual report pursuant to Section 13 and 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Management (Details)

v3.20.4
DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Management (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Notional Disclosures [Abstract]    
Notional value $ 33,327 $ 25,927
Derivatives designated as economic hedge    
Notional Disclosures [Abstract]    
Notional value 6,271 0
Fair Value Hedging    
Notional Disclosures [Abstract]    
Notional value 9,681 7,540
Cash Flow Hedging    
Notional Disclosures [Abstract]    
Notional value 17,375 18,387
Investment securities    
Notional Disclosures [Abstract]    
Notional value 3,484 12
Investment securities | Derivatives designated as economic hedge    
Notional Disclosures [Abstract]    
Notional value 0 0
Investment securities | Fair Value Hedging | Derivatives designated as Hedging Instruments    
Notional Disclosures [Abstract]    
Notional value 3,484 0
Investment securities | Cash Flow Hedging | Derivatives designated as Hedging Instruments    
Notional Disclosures [Abstract]    
Notional value 0 12
Loans    
Notional Disclosures [Abstract]    
Notional value 18,646 18,375
Loans | Derivatives designated as economic hedge    
Notional Disclosures [Abstract]    
Notional value 1,271 0
Loans | Fair Value Hedging | Derivatives designated as Hedging Instruments    
Notional Disclosures [Abstract]    
Notional value 0 0
Loans | Cash Flow Hedging | Derivatives designated as Hedging Instruments    
Notional Disclosures [Abstract]    
Notional value 17,375 18,375
Long-term debt    
Notional Disclosures [Abstract]    
Notional value 11,197 7,540
Long-term debt | Derivatives designated as economic hedge    
Notional Disclosures [Abstract]    
Notional value 5,000 0
Long-term debt | Fair Value Hedging | Derivatives designated as Hedging Instruments    
Notional Disclosures [Abstract]    
Notional value 6,197 7,540
Long-term debt | Cash Flow Hedging | Derivatives designated as Hedging Instruments    
Notional Disclosures [Abstract]    
Notional value $ 0 $ 0