XML 66 R55.htm IDEA: XBRL DOCUMENT v3.24.0.1
Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Summary Of Significant Accounting Policies [Line Items]      
Number of days on which collection of interest on principal is no longer probable 90 days    
Period over which borrower has to demonstrate repayment performance in compliance with restructured terms to take loan out of nonaccrual status 6 months    
Number of days on which charge-offs unsecured consumer loans are recorded 120 days    
Minimum loan amount for credit review process $ 1,000,000    
Goodwill impairment 0    
Fair value hedging transactions     $ 1,000,000,000
Weighted average fixed rate     3.80%
Fair value of instruments totaled     $ 6,900,000
Net decrease in retained earnings $ 1,112,642,000 $ 1,002,847,000  
Minimum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Number of days over which principal or interest payments are past due to consider loans, excluding PCI loans 30 days    
Number of days for which principal or interest payments on loans, excluding PCI loans remain accrual 30 days    
Maximum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Number of days for which principal or interest payments on loans, excluding PCI loans remain accrual 89 days