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PROPERTY, PLANT AND EQUIPMENT (Tables)
12 Months Ended
Dec. 31, 2019
PROPERTY, PLANT AND EQUIPMENT  
Schedule of property, plant and equipment

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2019

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2018

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Accumulated

    

Net Book

    

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Accumulated

    

Net Book

December 31 (millions of dollars)

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Cost

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Depreciation

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Value

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Cost

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Depreciation

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Value

Pipeline

 

1,907

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(929)

 

978

 

1,901

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(876)

 

1,025

Compression

 

584

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(202)

 

382

 

550

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(182)

 

368

Metering and other

 

180

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(56)

 

124

 

176

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(52)

 

124

Construction in progress

 

44

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-

 

44

 

12

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—

 

12

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2,715

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1,187

 

1,528

 

2,639

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(1,110)

 

1,529