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Inventories
3 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Inventories
Inventories

Inventories consisted of the following (in millions):
 
December 31, 2017
 
September 30, 2017
 
 
 
 
Raw materials and supplies
$
1,006

 
$
919

Work-in-process
543

 
567

Finished goods
1,910

 
1,723

Inventories
$
3,459

 
$
3,209