Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Narrative (Details)

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Employee Benefit Plans - Narrative (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Defined benefit pension and postretirement plans      
Effect of 1% Increase on Other postretirement benefits cost $ 2,000,000 $ 2,000,000  
Effect of 1% Decrease on Other postretirement benefits cost (2,000,000) (2,000,000)  
Effect of 1% Increase on Accumulated benefit obligation 31,000,000 29,000,000  
Effect of 1% Decrease on Accumulated benefit obligation (26,000,000) (25,000,000)  
U.S. Defined Contribution Pension
      
Defined Contribution Pension Plans [Abstract]      
Cash contributions to defined contribution plans 305,000,000 240,000,000 228,000,000
Non-U.S. Defined Contribution Pension
      
Defined Contribution Pension Plans [Abstract]      
Cash contributions to defined contribution plans 90,000,000 97,000,000 81,000,000
Total Defined Benefit Pension Plans
      
Defined benefit pension and postretirement plans      
Estimated future benefit payments in 2013 182,000,000    
Accumulated benefit obligation for all defined benefit pension plans 4,100,000,000 3,600,000,000  
U.S. Defined Benefit Pension Plans
      
Defined benefit pension and postretirement plans      
Estimated future benefit payments in 2013 132,000,000 [1]    
Prior year market gains and losses recognized by asset valuation method for defined pension plans 60.00%    
Remaining market gains and losses recognized by asset valuation method for defined pension plans 40.00%    
Number of subsequent years over which gains and losses are spread 4 years    
Increase in plan obligations with respect to 1/4% decline in discount rate 60,000,000    
Increase in plan expense with respect to 1/4 % decline in expected rate of return 7,000,000    
Non-U.S. Defined Benefit Pension Plans
      
Defined benefit pension and postretirement plans      
Estimated future benefit payments in 2013 50,000,000 [2]    
Estimated future employer contributions/payments in 2013 82,000,000    
U.K. Defined Benefit Pension Plan
      
Defined benefit pension and postretirement plans      
Increase in plan obligations with respect to 1/4% decline in discount rate 93,000,000    
Increase in plan expense with respect to 1/4 % decline in expected rate of return 5,000,000    
Postretirement Plans
      
Defined benefit pension and postretirement plans      
Estimated future benefit payments in 2013 19,000,000    
U.S. Terminated Pension Plan
      
Defined benefit pension and postretirement plans      
Estimated future benefit payments in 2013 $ 1,000,000    
Terminated pension plan as a percentage of total plan assets 60.00%    
Percentage of terminated pension plan assets invested in fixed income securities 100.00%    
[1] The U.S. defined benefit pension plan payments are primarily funded under the terminated plan annuity contract.
[2] The U.K., Swiss and Japan pension plans payments represent approximately 47%, 15% and 22%, respectively, of the non-U.S. 2013 expected defined benefit pension payments.