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Postretirement Benefit Plans (Details 14) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
U.S. Pension Plans [Member]
 
Defined Benefit Plan Estimated Future Benefit Payments [Abstract]  
2012 $ 15
2013 15
2014 16
2015 16
2016 17
2017-2021 93
International Pension Plan [Member]
 
Defined Benefit Plan Estimated Future Benefit Payments [Abstract]  
2012 3
2013 3
2014 4
2015 4
2016 4
2017-2021 17
Other Benefits [Member]
 
Defined Benefit Plan Estimated Future Benefit Payments [Abstract]  
2012 11
2013 11
2014 11
2015 12
2016 12
2017-2021 $ 61