Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2025

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of the changes in accumulated other comprehensive income/(loss) by component and the reclassifications out of accumulated other comprehensive income/(loss) attributable to the entity's common stockholders

Changes in accumulated other comprehensive loss by component during the three and nine months ended September 30, 2025 and 2024, respectively, attributable to Penske Automotive Group common stockholders follows:

Three Months Ended September 30, 2025

	Foreign Currency Translation		Other		Accumulated Other Comprehensive Loss
Balance at June 30, 2025	$	(166.2)	$	(6.2)	$	(172.4)
Other comprehensive loss, net of tax	(29.6)		(1.6)		(31.2)
Balance at September 30, 2025	$	(195.8)	$	(7.8)	$	(203.6)

Three Months Ended September 30, 2024

	Foreign Currency Translation		Other		Accumulated Other Comprehensive Loss
Balance at June 30, 2024	$	(296.9)	$	(2.8)	$	(299.7)
Other comprehensive income (loss), net of tax	95.1		(7.8)		87.3
Balance at September 30, 2024	$	(201.8)	$	(10.6)	$	(212.4)

Nine Months Ended September 30, 2025

	Foreign Currency Translation		Other		Accumulated Other Comprehensive Loss
Balance at December 31, 2024	$	(354.0)	$	(10.5)	$	(364.5)
Other comprehensive income, net of tax	158.2		2.7		160.9
Balance at September 30, 2025	$	(195.8)	$	(7.8)	$	(203.6)

Nine Months Ended September 30, 2024

	Foreign Currency Translation		Other		Accumulated Other Comprehensive Loss
Balance at December 31, 2023	$	(262.6)	$	(1.5)	$	(264.1)
Other comprehensive income (loss), net of tax	60.8		(9.1)		51.7
Balance at September 30, 2024	$	(201.8)	$	(10.6)	$	(212.4)