CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 227.0	$ 264.4	$ 686.1	$ 866.6
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	95.3	(66.4)	61.1	(14.7)
Other adjustments to comprehensive income, net of tax	(7.8)	0.1	(9.1)	8.3
Other comprehensive income (loss), net of tax:	87.5	(66.3)	52.0	(6.4)
Comprehensive income	314.5	198.1	738.1	860.2
Less: Comprehensive income attributable to non-controlling interests	1.1	0.5	3.9	4.0
Comprehensive income attributable to Penske Automotive Group common stockholders	$ 313.4	$ 197.6	$ 734.2	$ 856.2