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Property and Equipment
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment

Property and equipment consists of the following (in millions):
 
December 31, 2017
 
December 31, 2016
Land and buildings
$
123.5

 
$
115.1

Service vehicles
260.4

 
242.6

Leasehold improvements
74.4

 
63.4

Machinery and equipment
25.7

 
21.6

Computer equipment and software
58.4

 
47.8

Furniture and fixtures
11.8

 
8.2

Construction in progress
20.2

 
23.7

Property and equipment, gross
574.4

 
522.4

Less: accumulated depreciation
(288.1
)
 
(250.4
)
Property and equipment, net
$
286.3

 
$
272.0



Depreciation expense for the years ended December 31, 2017, 2016 and 2015 was $46.8 million, $39.7 million and $39.6 million, respectively. Depreciation expense for property and equipment is included in "Direct operating" and "Selling, general and administrative" expenses in the Company's consolidated statements of operations.

The Company leases certain of its service vehicles under capital leases. Depreciation of assets held under capital leases is included in depreciation expense. The gross amounts of property and equipment and related depreciation recorded under capital leases, included in service vehicles in the table above, were as follows (in millions):
 
December 31, 2017
 
December 31, 2016
Service vehicles
$
107.4

 
$
109.9

Less: accumulated depreciation
(55.2
)
 
(41.8
)
 
$
52.2

 
$
68.1


During October 2017, the Company entered into a financing obligation to lease certain of its properties as discussed further in Note 10, "Financing Obligations." Depreciation of assets held under financing obligations is included in depreciation expense. The gross amounts of land, building and leasehold improvements and related depreciation recorded under financing obligations, included in the table above, were as follows (in millions):
 
December 31, 2017
Land, building and leasehold improvements
$
70.1

Less: accumulated depreciation
(25.7
)
 
$
44.4