Concentrations of Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Concentration Risk [Line Items]
Receivables from Erie Insurance Exchange and affiliates, net	$ 625,338	$ 524,937
Receivables from Erie Insurance Exchange, allowance for credit loss	600	600
Affiliated Entity
Concentration Risk [Line Items]
Receivables from Erie Insurance Exchange and affiliates, net	$ 625,300	$ 524,900