Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Total revenues	$ 2,803.8	$ 2,849.7
Cost of sales:
Total cost of sales	2,342.9	2,399.0
Gross profit	460.9	450.7
Asset impairments	0.0	0.5
Selling, general and administrative	346.0	321.8
Depreciation and amortization	22.0	19.8
Operating income	92.9	108.6
Floor plan interest expense	(14.0)	(18.1)
Other interest expense, net	(17.0)	(15.3)
Other income, net	2.3	2.6
Income before income taxes	64.2	77.8
Income tax provision	(18.0)	(21.4)
Net income	$ 46.2	$ 56.4
Basic net income per share (in dollars per share)	$ 1.99	$ 2.43
Shares used in basic per share calculations (in shares)	23.3	23.2
Diluted net income per share (in dollars per share)	$ 1.97	$ 2.42
Shares used in diluted per share calculations (in shares)	23.5	23.2
Cash dividends paid per Class A and Class B share (in dollars per share)	$ 0.30	$ 0.29
New vehicle retail
Revenues:
Total revenues	$ 1,373.5	$ 1,461.1
Cost of sales:
Total cost of sales	1,295.3	1,375.2
Used vehicle retail
Revenues:
Total revenues	874.4	827.9
Cost of sales:
Total cost of sales	784.4	743.3
Used vehicle wholesale
Revenues:
Total revenues	66.7	77.4
Cost of sales:
Total cost of sales	66.1	76.5
Finance and insurance
Revenues:
Total revenues	121.9	117.5
Service, body and parts
Revenues:
Total revenues	329.9	317.4
Cost of sales:
Total cost of sales	161.8	157.9
Fleet and other
Revenues:
Total revenues	37.4	48.4
Cost of sales:
Total cost of sales	$ 35.3	$ 46.1