Inventories (Tables)
 9 Months Ended
Sep. 30, 2016
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
A summary of inventories is shown below:
 
September 30,
2016
 
December 31,
2015
 
 
 
 
 
(in millions)
Productive material
$
739

 
$
634

Work-in-process
117

 
98

Finished goods
519

 
449

Total
$
1,375

 
$
1,181