Supplemental Balance Sheet and Cash Flow Information (Tables)
 3 Months Ended
Mar. 31, 2018
Text Block [Abstract]  
Supplemental Balance Sheet Information [Text Block]
Inventory components at —
 
 
March 31,
2018
 
December 31,
2017
Raw materials
 
$
490

 
$
442

Work in process and finished goods
 
600

 
580

Inventory reserves
 
(58
)
 
(53
)
Total
 
$
1,032

 
$
969
Supplemental Cash Flow Information [Table Text Block]
Cash, cash equivalents and restricted cash at —
 
 
March 31,
2018
 
December 31,
2017
 
March 31,
2017
 
December 31,
2016
Cash and cash equivalents
 
$
479

 
$
603

 
$
423

 
$
707

Restricted cash included in other current assets
 
8

 
3

 
9

 
5

Restricted cash included in other noncurrent assets
 
4

 
4

 
4

 
4

Total cash, cash equivalents and restricted cash
 
$
491

 
$
610

 
$
436

 
$
716