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Inventories (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Inventories |  |  |
Retail automotive dealership new vehicles | $ 869.1 | $ 1,810.9 |
Retail automotive dealership used vehicles | 1,420.0 | 1,019.7 |
Retail automotive parts, accessories, and other | 126.4 | 117.2 |
Retail commercial truck dealership vehicles and parts | 436.7 | 223.1 |
Commercial vehicle distribution vehicles, parts, and engines | 276.8 | 254.7 |
Total inventories | 3,129.0 | 3,425.6 |
Interest credits and advertising assistance | $ 63.7 | $ 52.6 | $ 51.6

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- Definition Represents the carrying amount of commercial distribution vehicle inventory, net of valuation reserves. + References No definition available. + Details
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- Definition Represents the carrying amount of commercial vehicle inventory, net of valuation reserves. + References No definition available. + Details
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- Definition Carrying amount of new vehicle inventory, net of valuation reserves. + References No definition available. + Details
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- Definition Carrying amount of parts, accessories and other inventory, net of valuation reserves. + References No definition available. + Details
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- Definition Carrying amount of used vehicle inventory, net of valuation reserves. + References No definition available. + Details
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- Definition Floor plan interest credits and advertising assistance received from vendors, which reduce the cost of sales. + References No definition available. + Details
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