CONSOLIDATED CONDENSED STATEMENTS OF INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue:
Total revenues	$ 19,284.9	$ 17,232.0	$ 14,482.5
Cost of sales:
Total cost of sales	16,417.4	14,652.8	12,281.5
Gross profit	2,867.5	2,579.2	2,201.0
Selling, general and administrative expenses	2,223.0	2,008.6	1,711.6
Depreciation	78.0	70.2	59.6
Operating income	566.5	500.4	429.8
Floor plan interest expense	(44.5)	(46.5)	(43.4)
Other interest expense	(69.4)	(52.8)	(45.3)
Gain on investment		16.0
Equity in earnings of affiliates	39.3	40.8	30.7
Income from continuing operations before income taxes	491.9	457.9	371.8
Income taxes	(158.0)	(153.1)	(123.3)
Income from continuing operations	333.9	304.8	248.5
Loss from discontinued operations, net of tax	(3.5)	(14.7)	(2.8)
Net income	330.4	290.1	245.7
Less: Income attributable to non-controlling interests	4.3	3.4	1.5
Net income attributable to Penske Automotive Group common stockholders	$ 326.1	$ 286.7	$ 244.2
Basic earnings per share attributable to Penske Automotive Group common stockholders:
Continuing operations (in dollars per share)	$ 3.67	$ 3.34	$ 2.74
Discontinued operations (in dollars per share)	(0.04)	(0.16)	(0.03)
Net income attributable to Penske Automotive Group common stockholders (in dollars per share)	$ 3.63	$ 3.17	$ 2.71
Shares used in determining basic earnings per share (Note 6) (in shares)	89,759,626	90,318,839	90,273,747
Diluted earnings per share attributable to Penske Automotive Group common stockholders:
Continuing operations (in dollars per share)	$ 3.67	$ 3.34	$ 2.73
Discontinued operations (in dollars per share)	(0.04)	(0.16)	(0.03)
Net income attributable to Penske Automotive Group common stockholders (in dollars per share)	$ 3.63	$ 3.17	$ 2.70
Shares used in determining diluted earnings per share (Note 6) (in shares)	89,759,626	90,354,839	90,330,621
Amounts attributable to Penske Automotive Group common stockholders:
Income from continuing operations	$ 333.9	$ 304.8	$ 248.5
Less: Income attributable to non-controlling interests	4.3	3.4	1.5
Income from continuing operations, net of tax	329.6	301.4	247.0
Loss from discontinued operations, net of tax	(3.5)	(14.7)	(2.8)
Net income attributable to Penske Automotive Group common stockholders	$ 326.1	$ 286.7	$ 244.2
Cash dividends per share (in dollars per share)	$ 0.94	$ 0.78	$ 0.62
Retail Automotive Dealership
Revenue:
Total revenues	$ 17,896.3	$ 16,657.5	$ 14,329.9
Cost of sales:
Total cost of sales	15,288.3	14,180.1	12,153.1
Retail Commercial Truck Dealership
Revenue:
Total revenues	944.1	125.6
Cost of sales:
Total cost of sales	797.1	104.5
Commercial Vehicle Distribution and Other
Revenue:
Total revenues	444.5	448.9	152.6
Cost of sales:
Total cost of sales	$ 332.0	$ 368.2	$ 128.4