XML 110 R96.htm IDEA: XBRL DOCUMENT v3.22.4
Borrowings - Narrative (Detail) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Federal Funds Purchased    
Debt Instrument [Line Items]    
Aggregate availability under federal funds line $ 1,700.0 $ 1,300.0