XML 115 R88.htm IDEA: XBRL DOCUMENT v3.24.0.1
Bank segment (HEI only) - Loans Receivable, Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Financing Receivable, Nonaccrual [Line Items]      
Percentage of benchmark loan to appraisal ratio in excess of which mortgage insurance is required 80.00%    
Real estate loans for investors $ 1,500.0 $ 1,500.0 $ 1,500.0
Loans to directors, executive directors, affiliates and any related interest of such individuals 23.5 10.7  
Loan balances, related interests of individuals who are directors 21.6 10.0  
Asset Pledged as Collateral with Right      
Financing Receivable, Nonaccrual [Line Items]      
Loans and leases receivable before fees, gross $ 3,200.0 $ 3,000.0