Segment Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Information

Revenues and segment income by reportable segment

	Retail		Retail Commercial				Non-Automotive		Intersegment
	Automotive		Truck		Other		Investments		Elimination		Total
Revenues
2018	$	20,849.2	$	1,374.5	$	561.4	$	—	$	—	$	22,785.1
2017		19,824.3		1,048.0		514.6		—		—		21,386.9
2016		18,673.2		1,000.7		448.5		—		(3.9)		20,118.5
Floor plan interest expense
2018	$	74.9	$	4.2	$	1.8	$	—	$	—	$	80.9
2017		59.4		2.7		1.3		—		—		63.4
2016		47.1		2.9		0.9		—		—		50.9
Other interest expense
2018	$	108.3	$	2.4	$	4.0	$	—	$	—	$	114.7
2017		95.0		3.4		9.0		—		—		107.4
2016		74.8		4.1		6.5		—		—		85.4
Depreciation
2018	$	94.2	$	4.3	$	5.2	$	—	$	—	$	103.7
2017		85.7		4.1		5.3		—		—		95.1
2016		81.7		3.2		4.8		—		—		89.7
Equity in earnings of affiliates
2018	$	5.2	$	—	$	—	$	129.6	$	—	$	134.8
2017		4.6		—		—		103.0		—		107.6
2016		4.9		—		—		64.6		—		69.5
Adjusted segment income
2018	$	389.7	$	62.3	$	22.5	$	129.6	$	—	$	604.1
2017		397.2		38.4		9.6		103.0		—		548.2
2016		412.9		26.2		4.4		64.6		—		508.1

Total assets, equity method investments, and capital expenditures by reporting segment

	Retail		Retail Commercial				Non-Automotive		Intersegment
	Automotive		Truck		Other		Investments		Elimination		Total
Total assets
2018	$	8,501.4	$	571.5	$	590.5	$	1,241.1	$	—	$	10,904.5
2017		8,157.0		553.4		642.1		1,188.1		—		10,540.6
Equity method investments
2018	$	64.1	$	—	$	—	$	1,241.1	$	—	$	1,305.2
2017		68.5		—		—		1,188.1		—		1,256.6
Capital expenditures
2018	$	292.6	$	9.3	$	3.7	$	—	$	—	$	305.6
2017		237.8		6.4		2.8		—		—		247.0
2016		195.6		3.3		4.2		—		—		203.1

Schedule of revenue and long-lived assets by geographic area

	Year Ended December 31,
	2018		2017		2016
Revenue from external customers:
U.S.	$	12,607.8	$	12,487.2	$	12,005.9
Non-U.S.		10,177.3		8,899.7		8,112.6
Total revenue from external customers	$	22,785.1	$	21,386.9	$	20,118.5
Long-lived assets, net:
U.S.	$	2,365.5	$	2,268.1
Non-U.S.		1,205.6		1,111.5
Total long-lived assets	$	3,571.1	$	3,379.6

Schedule of revenue from external customers by product type for the Retail Automotive and Retail Commercial Truck segments

	Year Ended December 31,
Retail Automotive Dealership Revenue	2018		2017		2016
New vehicle	$	9,666.4	$	9,678.5	$	9,547.1
Used vehicle		7,252.1		6,386.8		5,663.7
Finance and insurance, net		629.6		581.8		495.0
Service and parts		2,151.4		2,057.5		1,948.6
Fleet and wholesale		1,149.7		1,119.7		1,018.8
Total retail automotive dealership revenue	$	20,849.2	$	19,824.3	$	18,673.2

	Year Ended December 31,
Retail Commercial Truck Dealership Revenue	2018		2017		2016
New truck	$	866.9	$	613.2	$	625.5
Used truck		112.0		89.4		51.8
Finance and insurance, net		11.9		9.0		7.3
Service and parts		364.5		325.6		306.0
Other		19.2		10.8		10.1
Total retail commercial truck dealership revenue	$	1,374.5	$	1,048.0	$	1,000.7