Accounting Policies - Summary of Components of Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Land	$ 235.7	$ 239.9
Structures	780.3	788.4
Revenue equipment	1,236.8	1,228.2
Technology equipment and software	321.5	291.7
Other, including miscellaneous field operations equipment	221.2	213.4
Total property and equipment, at cost	$ 2,795.5	$ 2,761.6

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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-Topic 210
-SubTopic 10
-Section 45
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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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-Publisher FASB
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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Property, plant and equipment other, including miscellaneous field operations equipment.

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Revenue Equipment

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Technology Equipment And Software

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