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Long-Term Debt and Credit Facilities (Tables)
 12 Months Ended
Dec. 31, 2011
Long-term Debt, Unclassified [Abstract]  
Maturities Of Long-Term Debt Disclosures
 
 
December 31
 
 
2011
 
2010
3.00% senior unsecured notes, due January 15, 2015
 
$
500

 
$
499

4.375% senior unsecured notes, due January 15, 2020
 
497

 
497

2.00% senior unsecured notes, due September 30, 2016
 
749

 
—

Other
 
22

 
25

Total debt
 
1,768

 
1,021

Less current maturities
 
(17
)
 
(25
)
Long-term debt
 
$
1,751

 
$
996