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Property and Equipment, Net
 3 Months Ended
Mar. 31, 2017
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net
Note 6 - Property and Equipment, Net
The following table provides details of property and equipment, net, including property and equipment held under capital leases as of the dates indicated (in millions):
 
March 31,
2017
 
December 31,
2016
Land
$
4.6

 
$
4.6

Buildings and leasehold improvements
24.0

 
24.2

Machinery and equipment
1,041.6

 
997.8

Office furniture and equipment
147.0

 
146.1

Construction in progress
18.2

 
9.5

Total property and equipment
$
1,235.4

 
$
1,182.2

Less accumulated depreciation and amortization
(664.9
)
 
(633.1
)
Property and equipment, net
$
570.5

 
$
549.1


The gross amount of capitalized internal-use software, which is included within office furniture and equipment, totaled $108.0 million and $107.8 million as of March 31, 2017 and December 31, 2016, respectively. Capitalized internal-use software, net of accumulated amortization, totaled $28.5 million and $30.9 million as of March 31, 2017 and December 31, 2016, respectively. Depreciation and amortization expense associated with property and equipment for the three month periods ended March 31, 2017 and 2016 totaled $38.8 million and $33.7 million, respectively.