Organization and Summary of Significant Accounting Policies - Retail Automotive (Details) - Retail automotive dealership	12 Months Ended
	Dec. 31, 2024 dealership franchise
Summary Of Significant Accounting Policies [Line Items]
Total number of owned and operated franchises	353
Number of retail automotive franchises acquired	16
U.S.
Summary Of Significant Accounting Policies [Line Items]
Number of owned and operated franchises in US	148
Number of retail locations operated | dealership	6
Number of retail automotive franchises acquired	2
U.S. | Chrysler, Jeep, Dodge, Ram
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive dealerships acquired	1
Number of retail automotive franchises closed	1
U.S. | Used Vehicle Dealerships
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive franchises closed	1
U.S. | Jaguar
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive franchises closed	1
U.S. | Lexus
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive franchises sold	1
Outside the U.S.
Summary Of Significant Accounting Policies [Line Items]
Number of owned and operated franchises outside US	205
U.S., U.K., and Australia
Summary Of Significant Accounting Policies [Line Items]
Number of stand-alone used vehicle dealerships operated in US and other countries | dealership	16
U.K.
Summary Of Significant Accounting Policies [Line Items]
Number of retail locations operated | dealership	9
Number of retail automotive franchises opened	1
Number of retail automotive franchises sold	2
U.K. | Used Vehicle Dealerships
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive franchises closed	1
U.K. | Jaguar
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive franchises closed	2
U.K. | Land Rover
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive franchises closed	2
U.K. | Audi
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive franchises closed	2
AUSTRALIA
Summary Of Significant Accounting Policies [Line Items]
Number of retail locations operated | dealership	1
Number of retail automotive dealerships acquired	3
AUSTRALIA | Used Vehicle Dealerships
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive dealerships acquired	1
Italy
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive dealerships acquired	2
Germany
Summary Of Significant Accounting Policies [Line Items]
Number of retail automotive franchises opened	1