XML 53 R40.htm IDEA: XBRL DOCUMENT v3.20.2
Investment Securities (Narrative) (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Investment securities available-for-sale, Amortized Cost $ 12,388 $ 12,313
Investment securities available-for-sale, Fair Value 12,759 12,398
Carrying value of securities pledged 5,700  
Pledged to the FHLB as collateral for potential future borrowings 5,200  
FHLB potential future borrowings 5,000  
Collateral for potential future borrowings 506  
Liabilities secured by pledged collateral 432  
U.S. Treasury and other U.S. government agency securities    
Investment securities available-for-sale, Amortized Cost 2,747 2,745
Investment securities available-for-sale, Fair Value 2,852 2,792
Residential mortgage-backed securities    
Investment securities available-for-sale, Amortized Cost [1] 9,641 9,568
Investment securities available-for-sale, Fair Value [1] 9,907 9,606
Debt securities    
Investment securities available-for-sale, Amortized Cost 12,388  
Investment securities available-for-sale, Fair Value 12,759  
Prepayment options | Residential mortgage-backed securities    
Investment securities available-for-sale, Amortized Cost 9,600  
Investment securities available-for-sale, Fair Value [1] 9,900  
Available-for-sale Securities [Member]    
Interest receivable $ 19 $ 20
[1] Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.