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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Line Items]  
Property and Equipment
December 31 (in millions)
Weighted-Average
Original Useful Life
as of December 31, 2019
 
2019

 
2018

Distribution systems
11 years
 
$
40,639

 
$
38,380

Customer premise equipment
6 years
 
26,065

 
26,208

Other equipment
9 years
 
13,025

 
12,437

Buildings and leasehold improvements
30 years
 
15,104

 
14,188

Construction in process
N/A
 
5,245

 
2,991

Land
N/A
 
1,483

 
1,539

Property and equipment, at cost
 
 
101,561

 
95,743

Less: Accumulated depreciation
 
 
53,239

 
51,306

Property and equipment, net
 
 
$
48,322

 
$
44,437


NBCUniversal Media LLC [Member]  
Property, Plant and Equipment [Line Items]  
Property and Equipment
December 31 (in millions)
Weighted-Average
Original Useful Life
as of December 31, 2019
2019

2018

Buildings and leasehold improvements
31 years
$
9,438

$
8,877

Furniture, fixtures and equipment
12 years
6,049

5,501

Construction in process
N/A
4,884

2,676

Land
N/A
1,179

1,129

Property and equipment, at cost
 
21,550

18,183

Less: Accumulated depreciation
 
5,799

4,994

Property and equipment, net
 
$
15,751

$
13,189