Segment Information (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Reportable Segment Revenue

In the following tables of financial data, revenue and segment income of our reportable segments are reconciled to consolidated revenue and consolidated income from continuing operations before income taxes, respectively.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
Revenue:
Domestic	$	1,912.4	$	2,044.9	$	5,557.7	$	5,888.2
Import	1,789.7		1,779.0		5,123.5		5,202.1
Premium Luxury	1,634.3		1,680.6		4,894.9		4,865.6
Total	5,336.4		5,504.5		15,576.1		15,955.9
Corporate and other	96.0		63.0		275.0		172.6
Total consolidated revenue	$	5,432.4	$	5,567.5	$	15,851.1	$	16,128.5

Reportable Segment Income

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
Segment income(1):
Domestic	$	69.0		$	83.9		$	190.5		$	246.9
Import	81.0			79.3			227.9			230.0
Premium Luxury	78.8			80.9			243.3			256.8
Total	228.8			244.1			661.7			733.7
Corporate and other	(42.7		)	(43.3		)	(118.3		)	(137.2		)
Other interest expense	(30.0		)	(28.9		)	(88.0		)	(85.9		)
Interest income	0.2			0.3			0.8			0.8
Other income, net	1.6			2.6			6.4			3.4
Income from continuing operations before income taxes	$	157.9		$	174.8		$	462.6		$	514.8
(1) Segment income represents income for each of our reportable segments and is defined as operating income less floorplan interest expense.