XML 53 R38.htm IDEA: XBRL DOCUMENT v3.24.3
Loans and Allowance for Loan Losses - Narrative (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans $ 43,120,674,000   $ 43,120,674,000   $ 43,404,490,000      
Land held for future development, period     1 year          
Financing receivable, allowance for credit loss 484,985,000 $ 477,532,000 $ 484,985,000 $ 477,532,000 479,385,000 $ 485,101,000 $ 471,238,000 $ 443,424,000
Reserve for unfunded commitments 49,600,000   49,600,000   57,200,000      
All financing receivable, allowance for credit loss $ 534,500,000   534,500,000   $ 536,600,000      
Increase (decrease) in allowance for credit loss     $ (2,100,000)          
ACL to loans ratio (as percent) 1.24%   1.24%   1.24%      
Allowance for credit loss, reasonable and supportable forecast period (in year)     2 years          
Allowance for credit loss, straight-line basis historical period (in year)     1 year          
Allowance for credit loss, measurement input, estimated peak weighted average unemployment rate 4.50%   4.50%   4.50%      
Financing receivable, modified, subsequent default $ 0 0 $ 74,700,000 0        
Commitments to land additional funds to TDRs 0   0   $ 0      
Total consumer                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Charge-off of previously established reserves for credit losses associated with the transfer to held for sale   23,300,000   31,300,000 31,300,000      
Reclassification to held-for-sale   1,170,000,000   1,590,000,000        
Financing receivable, allowance for credit loss 141,329,000 $ 134,702,000 $ 141,329,000 $ 134,702,000 126,657,000 $ 122,691,000 $ 141,525,000 $ 138,299,000
Substandard                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Retail loan substandard period (in days)     90 days          
Loss                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Retail loan charge off (in days)     120 days          
Asset Pledged as Collateral                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans $ 24,800,000,000   $ 24,800,000,000   $ 24,310,000,000