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Accounts Receivable (Tables)
 12 Months Ended
Dec. 31, 2011
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
(In millions)
2011
 
2010
Accounts receivable
$
2,946

 
$
2,842

Allowance for doubtful accounts
(97
)
 
(106
)
 
$
2,849

 
$
2,736