XML 60 R45.htm IDEA: XBRL DOCUMENT v3.5.0.2
Investment Securities - Additional Information (Detail) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]    
Weighted-average maturity of available-for-sale investment securities 3 years 10 months 24 days 4 years 8 months 12 days
Weighted-average yields of available-for-sale investment securities 2.14% 2.21%
Weighted-average maturity of held-to-maturity investment securities 3 years 7 months 6 days 4 years 2 months 12 days
Weighted-average yields of held-to-maturity investment securities 1.92% 1.92%
Fair value of securities pledged $ 11,900 $ 13,100
Fair value of securities pledged as collateral where counterparty has right to repledge or resell $ 946 $ 1,000