Organization and Summary of Significant Accounting Policies - Revenue Recognition (Details) - Finance and insurance, net - Retail Automotive and Retail Commercial Truck Dealership - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Revenue from external customers and Long-lived assets, net
Payment period	30 days
Aggregate reserves relating to chargeback activity	$ 42.7	$ 38.4