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Property and Equipment - Components of Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 574.4	$ 522.4
Less: accumulated depreciation and amortization	(288.1)	(250.4)
Property and equipment, net	286.3	272.0
Land and buildings
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	123.5	115.1
Service vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	260.4	242.6
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	74.4	63.4
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	25.7	21.6
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	58.4	47.8
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	11.8	8.2
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 20.2	$ 23.7

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
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-Section S99
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- Definition

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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+ References

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-Topic 210
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