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REVENUES - Revenues Disaggregated by Revenue Source and Geographical Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue
Revenue from contract with customer	$ 3,010.0	$ 2,690.8
U.S.
Disaggregation of Revenue
Revenue from contract with customer	2,404.3	2,007.6
U.K.
Disaggregation of Revenue
Revenue from contract with customer	549.6	590.7
Brazil
Disaggregation of Revenue
Revenue from contract with customer	56.1	92.5
Total new and used vehicle sales
Disaggregation of Revenue
Revenue from contract with customer	2,522.4	2,207.7
Total new and used vehicle sales | U.S.
Disaggregation of Revenue
Revenue from contract with customer	1,993.0	1,605.5
Total new and used vehicle sales | U.K.
Disaggregation of Revenue
Revenue from contract with customer	482.6	520.9
Total new and used vehicle sales | Brazil
Disaggregation of Revenue
Revenue from contract with customer	46.8	81.3
New vehicle retail sales
Disaggregation of Revenue
Revenue from contract with customer	1,543.4	1,342.2
New vehicle retail sales | U.S.
Disaggregation of Revenue
Revenue from contract with customer	1,246.0	988.4
New vehicle retail sales | U.K.
Disaggregation of Revenue
Revenue from contract with customer	263.2	296.3
New vehicle retail sales | Brazil
Disaggregation of Revenue
Revenue from contract with customer	34.1	57.5
Used vehicle retail sales
Disaggregation of Revenue
Revenue from contract with customer	898.8	779.0
Used vehicle retail sales | U.S.
Disaggregation of Revenue
Revenue from contract with customer	696.5	570.3
Used vehicle retail sales | U.K.
Disaggregation of Revenue
Revenue from contract with customer	191.6	188.8
Used vehicle retail sales | Brazil
Disaggregation of Revenue
Revenue from contract with customer	10.7	19.9
Used vehicle wholesale sales
Disaggregation of Revenue
Revenue from contract with customer	80.2	86.5
Used vehicle wholesale sales | U.S.
Disaggregation of Revenue
Revenue from contract with customer	50.4	46.8
Used vehicle wholesale sales | U.K.
Disaggregation of Revenue
Revenue from contract with customer	27.8	35.8
Used vehicle wholesale sales | Brazil
Disaggregation of Revenue
Revenue from contract with customer	2.0	3.8
Parts and service sales
Disaggregation of Revenue
Revenue from contract with customer	360.6	370.6
Parts and service sales | U.S.
Disaggregation of Revenue
Revenue from contract with customer	296.3	304.6
Parts and service sales | U.K.
Disaggregation of Revenue
Revenue from contract with customer	56.5	56.4
Parts and service sales | Brazil
Disaggregation of Revenue
Revenue from contract with customer	7.9	9.6
Finance, insurance and other, net
Disaggregation of Revenue
Revenue from contract with customer	127.0	112.5
Variable consideration recognized relating to performance obligations satisfied in previous period	6.0	4.0
Finance, insurance and other, net | U.S.
Disaggregation of Revenue
Revenue from contract with customer	115.1	97.4
Finance, insurance and other, net | U.K.
Disaggregation of Revenue
Revenue from contract with customer	10.6	13.3
Finance, insurance and other, net | Brazil
Disaggregation of Revenue
Revenue from contract with customer	$ 1.4	$ 1.7

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- Definition

Amount of revenue recognized from performance obligation satisfied or partially satisfied in previous reporting periods. Includes, but is not limited to, change in transaction price.

+ References

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