Concentrations of Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Concentration Risk [Line Items]
Receivables from Erie Insurance Exchange and affiliates, net	$ 707,060	$ 625,338
Receivables from Erie Insurance Exchange, allowance for credit loss	700	600
Affiliated Entity
Concentration Risk [Line Items]
Receivables from Erie Insurance Exchange and affiliates, net	$ 707,100	$ 625,300