Quarterly report pursuant to Section 13 or 15(d)

Employee Benefit Plans (Details)

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Employee Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
U.S. Defined Benefit Pension Plans
        
Components of Net Periodic Benefit Cost [Abstract]        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost 19 23 39 45
Expected return on plan assets (27) (38) (55) (76)
Amortization of prior service cost 0 0 0 0
Amortization of net actuarial (gains) losses 3 0 6 1
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments 0   0  
Net periodic benefit (income) cost (5) (15) (10) (30)
Non-U.S. Defined Benefit Pension Plans
        
Components of Net Periodic Benefit Cost [Abstract]        
Service cost 8 10 16 19
Interest cost 21 21 43 41
Expected return on plan assets (27) (32) (55) (62)
Amortization of prior service cost 0 0 0 0
Amortization of net actuarial (gains) losses 0 (2) 1 (4)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments 0   (7)  
Net periodic benefit (income) cost 2 (3) (2) (6)
Estimated future employer contributions in 2013 96   96  
Amount contributed by employer     64  
Postretirement Plans
        
Components of Net Periodic Benefit Cost [Abstract]        
Service cost 1 [1] 1 [2] 2 [1] 2 [2]
Interest cost 2 [1] 4 [2] 5 [1] 8 [2]
Expected return on plan assets 0 [1] 0 [2] 0 [1] 0 [2]
Amortization of prior service cost 1 [1] 1 [2] 2 [1] 2 [2]
Amortization of net actuarial (gains) losses (1) [1] 2 [2] (2) [1] 4 [2]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments 0 [1]   0 [1]  
Net periodic benefit (income) cost 3 [1] 8 [2] 7 [1] 16 [2]
Percentage of the postretirement benefit obligation that relates to the U.S. postretirement plan 93.00% 96.00% 93.00% 96.00%
Estimated future employer contributions in 2013 19   19  
Amount contributed by employer     10  
Nonqualified Pension Plans
        
Components of Net Periodic Benefit Cost [Abstract]        
Estimated future employer contributions in 2013 $ 1   $ 1  
[1] Approximately 93% of the postretirement benefit obligation at June 30, 2013 relates to the U.S. postretirement plan.
[2] )Approximately 96% of the postretirement benefit obligation at June 30, 2012 relates to the U.S. postretirement plan.