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Property and Equipment, Net Property and Equipment, Net
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment, Net [Abstract]  
Property and equipment, net
Property and Equipment, Net
Property and equipment consisted of the following:

December 31,
 
Estimated
useful
(in millions)
2017

2016

life
Land
$
85

81

N/A
Buildings and improvements
1,100

1,048

8 - 20 years
Furniture and other equipment
497

447

2 - 8 years
Broadcast equipment
134

135

3 - 5 years
Computer equipment
160

146

2 - 4 years
Transponders and terrestrial transmitter (note 9)
170

150

8 - 15 years
Projects in progress
33

28

N/A

2,179

2,035


Less: accumulated depreciation
(1,174
)
(1,004
)

Property and equipment, net
$
1,005

1,031



Disposal of assets reduced property and equipment by $40 million and $65 million for the years ended December 31, 2017 and 2016, respectively.