CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 221.2	$ 225.3	$ 717.3	$ 751.2
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	0.0	(29.6)	(17.4)	158.8
Other adjustments to comprehensive income	(4.0)	(1.6)	(15.6)	2.7
Other comprehensive income (loss), net of tax	(4.0)	(31.2)	(33.0)	161.5
Comprehensive income	217.2	194.1	684.3	912.7
Less: Comprehensive income attributable to non-controlling interests	0.4	0.5	1.4	2.7
Comprehensive income attributable to Penske Automotive Group common stockholders	$ 216.8	$ 193.6	$ 682.9	$ 910.0