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Benefit Plans (Details 2) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Amounts charged to expense      
Amounts charged to expense for defined contribution plans $ 15 $ 13 $ 12
US Plans
     
Plan assets      
Weighted average asset allocation (as a percent) 100.00% 100.00%  
Fair value of plan assets 297 257 222
Cash contributions to defined benefit pension plan 13 23  
Expected contribution in next fiscal year 2    
Expected future benefit payments      
2014 18    
2015 17    
2016 17    
2017 19    
2018 20    
Years 2019 - 2023 105    
US Plans | Equity Index, US
     
Plan assets      
Fair value of plan assets 151    
US Plans | Equity Index, International
     
Plan assets      
Fair value of plan assets 32    
US Plans | Equity Index, Real Estate
     
Plan assets      
Fair value of plan assets 3    
US Plans | Fixed Income Index, Intermediate Bond
     
Plan assets      
Fair value of plan assets 57    
US Plans | Fixed Income Index, Long Bond
     
Plan assets      
Fair value of plan assets 50    
US Plans | Cash and other
     
Plan assets      
Plan assets minimum allocation percentage 1.00%    
Plan assets maximum allocation percentage 3.00%    
Weighted average asset allocation (as a percent) 2.00% 1.00%  
US Plans | Cash
     
Plan assets      
Fair value of plan assets 4    
US Plans | Equity securities
     
Plan assets      
Plan assets minimum allocation percentage 38.00%    
Plan assets maximum allocation percentage 72.00%    
Weighted average asset allocation (as a percent) 62.00% 61.00%  
US Plans | Debt securities
     
Plan assets      
Weighted average asset allocation (as a percent) 36.00% 38.00%  
US Plans | Fixed income securities
     
Plan assets      
Plan assets minimum allocation percentage 31.00%    
Plan assets maximum allocation percentage 58.00%    
US Plans | Level 2
     
Plan assets      
Fair value of plan assets 297    
US Plans | Level 2 | Equity Index, US
     
Plan assets      
Fair value of plan assets 151    
US Plans | Level 2 | Equity Index, International
     
Plan assets      
Fair value of plan assets 32    
US Plans | Level 2 | Equity Index, Real Estate
     
Plan assets      
Fair value of plan assets 3    
US Plans | Level 2 | Fixed Income Index, Intermediate Bond
     
Plan assets      
Fair value of plan assets 57    
US Plans | Level 2 | Fixed Income Index, Long Bond
     
Plan assets      
Fair value of plan assets 50    
US Plans | Level 2 | Cash
     
Plan assets      
Fair value of plan assets 4    
Non-US Plans
     
Plan assets      
Weighted average asset allocation (as a percent) 100.00% 100.00%  
Fair value of plan assets 223 189 156
Cash contributions to defined benefit pension plan 43 15  
Expected contribution in next fiscal year 8    
Expected future benefit payments      
2014 15    
2015 14    
2016 14    
2017 14    
2018 15    
Years 2019 - 2023 79    
Non-US Plans | Equity Index, US
     
Plan assets      
Fair value of plan assets 38    
Non-US Plans | Equity Index, Canada
     
Plan assets      
Fair value of plan assets 38    
Non-US Plans | Equity Index, International
     
Plan assets      
Fair value of plan assets 39    
Non-US Plans | Fixed Income Index, Intermediate Bond
     
Plan assets      
Fair value of plan assets 1    
Non-US Plans | Fixed Income Index, Long Bond
     
Plan assets      
Fair value of plan assets 85    
Non-US Plans | Cash and other
     
Plan assets      
Weighted average asset allocation (as a percent) 10.00% 11.00%  
Non-US Plans | Cash
     
Plan assets      
Fair value of plan assets 3    
Non-US Plans | Equity securities
     
Plan assets      
Weighted average asset allocation (as a percent) 51.00% 42.00%  
Non-US Plans | Debt securities
     
Plan assets      
Weighted average asset allocation (as a percent) 39.00% 47.00%  
Non-US Plans | Other
     
Plan assets      
Fair value of plan assets 19    
Non-US Plans | Level 1
     
Plan assets      
Fair value of plan assets 3    
Non-US Plans | Level 1 | Cash
     
Plan assets      
Fair value of plan assets 3    
Non-US Plans | Level 2
     
Plan assets      
Fair value of plan assets 220    
Non-US Plans | Level 2 | Equity Index, US
     
Plan assets      
Fair value of plan assets 38    
Non-US Plans | Level 2 | Equity Index, Canada
     
Plan assets      
Fair value of plan assets 38    
Non-US Plans | Level 2 | Equity Index, International
     
Plan assets      
Fair value of plan assets 39    
Non-US Plans | Level 2 | Fixed Income Index, Intermediate Bond
     
Plan assets      
Fair value of plan assets 1    
Non-US Plans | Level 2 | Fixed Income Index, Long Bond
     
Plan assets      
Fair value of plan assets 85    
Non-US Plans | Level 2 | Other
     
Plan assets      
Fair value of plan assets $ 19