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Retirement Benefits Plans - Estimated Pension and Other Postretirement Benefit Payments (Details 10) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Estimated United States pension payments [Member]
Dec. 31, 2011
Estimated non-United States pension payments [Member]
Dec. 31, 2011
Gross [Member]
Dec. 31, 2011
Medicare Prescription Drug Subsidy [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans            
2012     $ 143 $ 86 $ 91  
Medicare prescription drug subsidy 2012           (7)
2013     148 74 92  
Medicare prescription drug subsidy 2013           (7)
2014     329 75 85  
Medicare prescription drug subsidy 2014           (7)
2015     205 77 81  
Medicare prescription drug subsidy 2015           (7)
2016     215 80 78  
Medicare prescription drug subsidy 2016           (6)
2017 - 2021     1,206 431 325  
Medicare prescription drug subsidy 2017 - 2021           $ (12)
Percentage Of Pension Lump Sum Payments 50.00% 50.00%