CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 213.5	$ 227.0	$ 709.4	$ 686.1
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(29.6)	95.3	158.8	61.1
Other adjustments to comprehensive income, net of tax	(1.6)	(7.8)	2.7	(9.1)
Other comprehensive income (loss), net of tax:	(31.2)	87.5	161.5	52.0
Comprehensive income	182.3	314.5	870.9	738.1
Less: Comprehensive income attributable to non-controlling interests	0.5	1.1	2.7	3.9
Comprehensive income attributable to Penske Automotive Group common stockholders	$ 181.8	$ 313.4	$ 868.2	$ 734.2