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Receivables Receivables (Tables)
 12 Months Ended
Dec. 31, 2011
Receivables [Abstract]  
Schedule of Receivables [Table Text Block]
Receivables at December 31, 2011 and 2010 consisted of the following (in millions):
 
 
2011
 
2010
Trade receivables
 
$
1,248

 
$
875

Tax receivables
 
25

 
20

Other receivables
 
6

 
21

Allowance for doubtful accounts
 
(7
)
 
(8
)
Total Receivables, Net
 
$
1,272

 
$
908