v2.4.0.8
Commitments And Contingencies (Details) (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Environmental [Abstract]      
Beginning balance at January 1 $ 171 $ 170  
Accruals 16 19  
Payments (20) (21)  
Ending balance at June 30 167 168  
Current portion, ending balance at June 30 51 49  
Sites identified which we are or may be liable for remediation costs 269    
Sites subject of actions taken by the U.S. government 31    
Sites on the Superfund National Priorities List 17    
Environmental liability discount rate 0.00%   0.00%
Future Minimum Lease Payments For Operating Leases [Abstract]      
Total minimum operating lease payments 4,000    
Personal Injury [Member]
      
Liability Activity [Abstract]      
Commitments and contingencies, beginning balance at January 1 294 334  
Accruals 43 47  
Changes in estimates for prior years (14) (22)  
Payments (30) (44)  
Commitments and contingencies, ending balance at June 30 293 315  
Commitments and contingencies, current portion, ending balance at June 30 80 90  
Asserted And Unasserted Claims [Abstract]      
Percent of liability recorded related to asserted claims 92.00%    
Percent of liability recorded related to unasserted claims 8.00%    
Reasonably possible outcome of related claims, range minimum 293    
Reasonably possible outcome of related claims, range maximum 319    
Asbestos [Member]
      
Liability Activity [Abstract]      
Commitments and contingencies, beginning balance at January 1 131 139  
Accruals 0 0  
Payments (4) (5)  
Commitments and contingencies, ending balance at June 30 127 134  
Commitments and contingencies, current portion, ending balance at June 30 9 8  
Asserted And Unasserted Claims [Abstract]      
Percent of liability recorded related to asserted claims 20.00%    
Percent of liability recorded related to unasserted claims 80.00%    
Guarantees [Member]
      
Guarantees [Abstract]      
Maximum potential amount of guarantee payments 93   299
Recorded liability for fair value of guarantees $ 0.3   $ 1.0
Expiration year of final guarantee The final guarantee expires in 2022.