Organization and Summary of Significant Accounting Policies - Penske Transportation Solutions (Details)	12 Months Ended
	Dec. 31, 2023
Penske Truck Leasing Co LP | Penske Corporation
Summary Of Significant Accounting Policies [Line Items]
Ownership interest in Penske Truck Leasing Company	41.10%
Penske Truck Leasing Co LP | Mitsui and Co
Summary Of Significant Accounting Policies [Line Items]
Ownership interest in Penske Truck Leasing Company	30.00%
Penske Truck Leasing Co LP | Corporate Joint Venture
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	28.90%