XML 45 R75.htm IDEA: XBRL DOCUMENT v2.4.0.6
Receivables, Net (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Receivables, Net        
Trade accounts receivable $ 361 $ 305    
Notes receivable 7 5    
Other receivables 41 18    
Receivables, gross 409 328    
Allowance for doubtful accounts (13) (13) (21) (12)
Receivables, net $ 396 $ 315