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Segment Information (Tables)
9 Months Ended
Sep. 30, 2023
Segment Reporting [Abstract]  
Reportable Segment Revenues and Segment Income
The following table provides information on revenues from external customers and segment income of our reportable segments:
Three Months EndedNine Months Ended
 September 30, 2023September 30, 2023
 DomesticImportPremium LuxuryDomesticImportPremium Luxury
Revenues from external customers$1,983.9 $2,077.2 $2,516.1 $5,770.5 $5,864.2 $7,621.5 
Segment income (1)
$107.2 $164.7 $192.9 $341.5 $498.1 $641.2 
Three Months EndedNine Months Ended
 September 30, 2022September 30, 2022
 DomesticImportPremium LuxuryDomesticImportPremium Luxury
Revenues from external customers$2,032.8 $1,875.2 $2,506.4 $6,108.1 $5,799.0 $7,601.7 
Segment income (1)
$142.7 $180.3 $235.2 $445.2 $559.0 $722.2 
(1) Segment income represents income for each of our reportable segments and is defined as operating income less floorplan interest expense.
Reconciliation of Segment Income
The following is a reconciliation of total segment income for reportable segments to our consolidated income from continuing operations before income taxes:
Three Months EndedNine Months Ended
 September 30,September 30,
 2023202220232022
Total segment income for reportable segments$464.8 $558.2 $1,480.8 $1,726.4 
Corporate and other(83.6)(46.4)(277.0)(148.5)
Other interest expense(48.8)(33.7)(135.9)(97.4)
Other income (loss), net(5.0)(4.6)4.6 (24.7)
Income from continuing operations before income taxes$327.4 $473.5 $1,072.5 $1,455.8