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Inventories
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories
 
As of
June 30,
2019
 
As of
December 31,
2018
 
(In $ millions)
Finished goods
688

 
697

Work-in-process
73

 
70

Raw materials and supplies
250

 
279

Total
1,011

 
1,046