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Estimated Future Benefit Payments (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
United States Pension Plans of US Entity, Defined Benefit
 
Defined Benefit Plan Disclosure [Line Items]  
2013 $ 137
2014 133
2015 132
2016 127
2017 124
2018 to 2022 594
Total 1,247
Foreign Pension Plans, Defined Benefit
 
Defined Benefit Plan Disclosure [Line Items]  
2013 14
2014 14
2015 14
2016 14
2017 16
2018 to 2022 103
Total 175
Foreign Postretirement Benefit Plans, Defined Benefit
 
Defined Benefit Plan Disclosure [Line Items]  
2013 7
2014 7
2015 7
2016 7
2017 7
2018 to 2022 35
Total $ 70