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Property, Plant and Equipment (Tables)
6 Months Ended
Jun. 30, 2019
Property Plant And Equipment [Abstract]  
Schedule of Carrying Value of Property, Plant and Equipment

The carrying value of property, plant and equipment is as follows:

(Thousands)

 

Depreciable Lives

 

 

June 30, 2019

 

 

December 31, 2018

 

Land

 

Indefinite

 

 

$

27,567

 

 

$

29,304

 

Building and improvements

 

3 - 40 years

 

 

 

345,754

 

 

 

340,238

 

Real property interests

 

 

(1

)

 

 

4,630

 

 

 

34,878

 

Poles

 

30 years

 

 

 

255,103

 

 

 

248,989

 

Fiber

 

30 years

 

 

 

3,158,337

 

 

 

3,005,304

 

Equipment

 

5 - 7 years

 

 

 

266,933

 

 

 

256,838

 

Copper

 

20 years

 

 

 

3,756,758

 

 

 

3,721,649

 

Conduit

 

30 years

 

 

 

89,768

 

 

 

89,692

 

Tower assets

 

20 years

 

 

 

127,577

 

 

 

120,073

 

Capital lease assets

 

 

(1

)

 

 

128,530

 

 

 

123,017

 

Other assets

 

15 - 20 years

 

 

 

11,798

 

 

 

11,524

 

Corporate assets

 

3 - 7 years

 

 

 

4,733

 

 

 

4,214

 

Construction in progress

 

 

(1

)

 

 

117,547

 

 

 

137,585

 

 

 

 

 

 

 

 

8,295,035

 

 

 

8,123,305

 

Less accumulated depreciation

 

 

 

 

 

 

(5,093,599

)

 

 

(4,914,299

)

Net property, plant and equipment

 

 

 

 

 

$

3,201,436

 

 

$

3,209,006

 

(1) See our Annual Report for property, plant and equipment accounting policies.