Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of expense for amortization of capitalized computer software costs.

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Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,213.8	$ 2,025.9
Accumulated depreciation and amortization	(1,375.6)	(1,262.6)
Property and equipment, net	838.2	763.3
Amortization	14.7	15.7	$ 16.5
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	53.1	51.9
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	229.1	211.0
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	269.2	236.0
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	686.6	646.3
Capitalized software(a)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	233.4	213.4
Other machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 742.4	$ 667.3