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Segment Information (Tables)
3 Months Ended
Mar. 31, 2022
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 Ended
 March 31, 2022
 DomesticImportPremium Luxury
Revenues from external customers$2,034.4 $1,974.1 $2,478.7 
Segment income (1)
$149.4 $186.2 $229.5 
Three Months Ended
 March 31, 2021
 DomesticImportPremium Luxury
Revenues from external customers$1,846.7 $1,769.6 $2,103.5 
Segment income (1)
$118.5 $125.9 $158.5 
(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 Ended
 March 31,
 20222021
Total segment income for reportable segments$565.1 $402.9 
Corporate and other(51.3)(75.4)
Other interest expense(29.6)(21.2)
Other income (loss), net(6.4)11.0 
Income from continuing operations before income taxes$477.8 $317.3