CONSOLIDATED CONDENSED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue:
Total revenues	$ 7,662.3	$ 7,696.7	$ 15,266.8	$ 15,144.5
Cost of sales:
Total cost of sales	6,365.7	6,432.6	12,701.2	12,635.2
Gross profit	1,296.6	1,264.1	2,565.6	2,509.3
Selling, general, and administrative expenses	906.3	887.5	1,819.9	1,767.3
Depreciation	42.1	38.6	82.0	76.4
Operating income	348.2	338.0	663.7	665.6
Floor plan interest expense	(43.3)	(46.6)	(84.8)	(91.4)
Other interest expense	(21.6)	(19.9)	(44.1)	(41.2)
Gain on sale of dealership	0.0	0.0	52.3	0.0
Equity in earnings of affiliates	53.6	54.0	86.9	87.3
Income before income taxes	336.9	325.5	674.0	620.3
Income taxes	(86.0)	(82.6)	(178.1)	(161.2)
Net income	250.9	242.9	495.9	459.1
Less: Income attributable to non-controlling interests	0.9	1.7	1.6	2.7
Net income attributable to Penske Automotive Group common stockholders	$ 250.0	$ 241.2	$ 494.3	$ 456.4
Basic earnings per share attributable to Penske Automotive Group common stockholders:
Net income attributable to Penske Automotive Group common stockholders (in dollars per share)	$ 3.78	$ 3.61	$ 7.44	$ 6.81
Shares used in determining basic earnings per share (in shares)	66,172,701	66,878,772	66,470,709	66,969,939
Diluted earnings per share attributable to Penske Automotive Group common stockholders:
Net income attributable to Penske Automotive Group common stockholders (in dollars per share)	$ 3.78	$ 3.61	$ 7.44	$ 6.81
Shares used in determining diluted earnings per share (in shares)	66,187,252	66,895,548	66,485,260	66,986,715
Amounts attributable to Penske Automotive Group common stockholders:
Net income	$ 250.9	$ 242.9	$ 495.9	$ 459.1
Less: Income attributable to non-controlling interests	0.9	1.7	1.6	2.7
Net income attributable to Penske Automotive Group common stockholders	$ 250.0	$ 241.2	$ 494.3	$ 456.4
Cash dividends per share (in dollars per share)	$ 1.26	$ 0.96	$ 2.48	$ 1.83
Retail automotive dealership
Revenue:
Total revenues	$ 6,517.5	$ 6,615.4	$ 13,086.8	$ 13,093.4
Cost of sales:
Total cost of sales	5,408.7	5,540.4	10,894.2	10,961.2
Depreciation	36.5	33.5	71.0	66.6
Floor plan interest expense	(36.2)	(39.5)	(71.7)	(78.3)
Other interest expense	(17.5)	(18.8)	(35.5)	(40.0)
Equity in earnings of affiliates	0.3	1.2	0.5	2.2
Income before income taxes	222.3	210.4	474.4	408.8
Retail commercial truck dealership
Revenue:
Total revenues	943.6	892.3	1,767.3	1,684.1
Cost of sales:
Total cost of sales	800.0	747.8	1,482.7	1,394.8
Depreciation	4.1	3.7	8.1	7.2
Floor plan interest expense	(4.9)	(4.7)	(8.6)	(8.7)
Other interest expense	0.0	0.0	0.0	0.0
Equity in earnings of affiliates	0.0	0.0	0.0	0.0
Income before income taxes	54.2	51.7	99.3	102.2
Commercial vehicle distribution and other
Revenue:
Total revenues	201.2	189.0	412.7	367.0
Cost of sales:
Total cost of sales	$ 157.0	$ 144.4	$ 324.3	$ 279.2