Annual report pursuant to Section 13 and 15(d)

OTHER NONCURRENT ASSETS

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OTHER NONCURRENT ASSETS
 12 Months Ended
Dec. 31, 2018
OTHER NONCURRENT ASSETS  
OTHER NONCURRENT ASSETS

10.  OTHER NONCURRENT ASSETS

Other noncurrent assets consisted of the following (dollars in millions):

 

 

 

 

 

 

 

 

 

December 31, 

 

    

2018

    

2017

Capitalized turnaround costs, net

 

$

280

 

$

233

Catalyst assets, net

 

 

56

 

 

46

Other

 

 

217

 

 

218

Total

 

$

553

 

$

497

 

Amortization expense of catalyst assets for the years ended December 31, 2018, 2017 and 2016 was $22  million, $15 million and $17 million, respectively.