CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Total Penske Automotive Group Stockholders' Equity	Voting and Non-voting Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interest
Beginning balance (in shares) at Dec. 31, 2022			69,681,891
Beginning balance at Dec. 31, 2022	$ 4,351.7	$ 4,324.9	$ 0.0	$ 0.0	$ 4,660.2	$ (335.3)	$ 26.8
Increase (decrease) in stockholders' equity
Equity compensation (in shares)			237,906
Equity compensation	28.1	28.1		28.1
Repurchases of common stock (in shares)			(2,808,616)
Repurchases of common stock	(385.2)	(385.2)		(28.1)	(357.1)
Dividends	(189.1)	(189.1)			(189.1)
PMG Distributions to partners	(54.7)	(54.7)			(54.7)
Distributions to non-controlling interest	(3.4)						(3.4)
Foreign currency translation	66.1	65.5				65.5	0.6
Other	5.7	5.7				5.7
Net income	1,114.2	1,108.8			1,108.8		5.4
Ending balance (in shares) at Dec. 31, 2023			67,111,181
Ending balance at Dec. 31, 2023	4,933.4	4,904.0	$ 0.0	0.0	5,168.1	(264.1)	29.4
Increase (decrease) in stockholders' equity
Equity compensation (in shares)			180,715
Equity compensation	29.4	29.4		29.4
Repurchases of common stock (in shares)			(517,245)
Repurchases of common stock	(78.0)	(78.0)		(16.7)	(61.3)
Dividends	(274.4)	(274.4)			(274.4)
PMG Distributions to partners	(36.6)	(36.6)			(36.6)
Purchase of subsidiary shares from non-controlling interest	(16.7)	(3.6)		(3.6)			(13.1)
Distributions to non-controlling interest	(2.8)						(2.8)
Foreign currency translation	(91.9)	(91.4)				(91.4)	(0.5)
Other	(17.3)	(17.3)			(8.3)	(9.0)
Net income	$ 973.4	968.9			968.9		4.5
Ending balance (in shares) at Dec. 31, 2024	66,774,651		66,774,651
Ending balance at Dec. 31, 2024	$ 5,418.5	5,401.0	$ 0.0	9.1	5,756.4	(364.5)	17.5
Increase (decrease) in stockholders' equity
Equity compensation (in shares)			164,224
Equity compensation	30.2	30.2		30.2
Repurchases of common stock (in shares)			(1,178,411)
Repurchases of common stock	(183.0)	(183.0)		(39.3)	(143.7)
Dividends	(343.8)	(343.8)			(343.8)
PMG Distributions to partners	(52.5)	(52.5)			(52.5)
PMG common control transaction	(401.7)	(401.7)			(401.7)
Distributions to non-controlling interest	(2.3)						(2.3)
Foreign currency translation	166.9	166.1				166.1	0.8
Other	10.7	10.7				10.7
Net income	$ 937.9	935.4			935.4		2.5
Ending balance (in shares) at Dec. 31, 2025	65,760,464		65,760,464
Ending balance at Dec. 31, 2025	$ 5,580.9	$ 5,562.4	$ 0.0	$ 0.0	$ 5,750.1	$ (187.7)	$ 18.5