CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 242.9	$ 302.6	$ 459.1	$ 602.2
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	2.4	33.4	(34.2)	51.7
Other adjustments to comprehensive income	(4.9)	3.4	(1.3)	8.2
Other comprehensive income (loss), net of tax	(2.5)	36.8	(35.5)	59.9
Comprehensive income	240.4	339.4	423.6	662.1
Less: Comprehensive income attributable to non-controlling interests	1.6	1.9	2.8	3.5
Comprehensive income attributable to Penske Automotive Group common stockholders	$ 238.8	$ 337.5	$ 420.8	$ 658.6