XML 105 R77.htm IDEA: XBRL DOCUMENT v3.21.1
INVESTMENTS - Debt Securities Held-to-Maturity (Details) - USD ($)
$ in Millions
1 Months Ended
Feb. 28, 2021
Aug. 31, 2020
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Debt Securities Held-to-maturity            
Amortized cost, net     $ 161,742 $ 104,943    
Gross unrealized gains     2,334 3,022    
Gross unrealized losses     1,701 175    
Fair value     162,375 107,790    
Allowance for credit losses on HTM debt securities     78 86 $ 76 $ 0
Mortgage-backed securities - U.S. government-sponsored agency guaranteed            
Debt Securities Held-to-maturity            
Amortized cost, net     63,783 49,004    
Gross unrealized gains     1,643 2,162    
Gross unrealized losses     718 15    
Fair value     64,708 51,151    
Mortgage-backed securities - Non-U.S. residential            
Debt Securities Held-to-maturity            
Amortized cost, net     1,107 1,124    
Gross unrealized gains     3 3    
Gross unrealized losses     1 1    
Fair value     1,109 1,126    
Commercial            
Debt Securities Held-to-maturity            
Amortized cost, net     887 825    
Gross unrealized gains     2 1    
Gross unrealized losses     1 1    
Fair value     888 825    
Mortgage-backed securities            
Debt Securities Held-to-maturity            
Amortized cost, net     65,777 50,953    
Gross unrealized gains     1,648 2,166    
Gross unrealized losses     720 17    
Fair value     66,705 53,102    
U.S. treasury securities            
Debt Securities Held-to-maturity            
Amortized cost, net     58,380 21,293    
Gross unrealized gains     0 4    
Gross unrealized losses     925 55    
Fair value     57,455 21,242    
Fair value of securities transferred from AFS to HTM   $ 13,100        
Securities transferred from AFS to HTM, unrealized gain position   $ 144        
State and municipal            
Debt Securities Held-to-maturity            
Amortized cost, net     9,446 9,185    
Gross unrealized gains     631 755    
Gross unrealized losses     17 11    
Fair value     10,060 9,929    
Fair value of securities transferred from AFS to HTM $ 237          
Securities transferred from AFS to HTM, unrealized gain position $ 14          
Foreign government            
Debt Securities Held-to-maturity            
Amortized cost, net     1,877 1,931    
Gross unrealized gains     45 91    
Gross unrealized losses     8 0    
Fair value     1,914 2,022    
Asset-backed securities            
Debt Securities Held-to-maturity            
Amortized cost, net     26,262 21,581    
Gross unrealized gains     10 6    
Gross unrealized losses     31 92    
Fair value     $ 26,241 $ 21,495