v2.4.0.8
Postemployment 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
Postemployment Benefit Plans        
Expense associated with severance-related costs $ 10   $ 10  
Net periodic benefit costs, before tax        
Service cost 22 21 43 40
Interest cost 21 23 43 43
Expected return on plan assets (22) (24) (45) (44)
Settlements and curtailments 1   1 2
Actuarial losses, net 14 11 28 22
Prior service cost (credit), net (1) (1) (1) (1)
Net periodic benefit costs 35 30 69 62
Funding contributions 62 110 81 122
Minimum
        
Postemployment Benefit Plans        
Period of employee's weekly base salary considered for calculation of lump sum benefit payment     28 days  
Maximum
        
Postemployment Benefit Plans        
Period of employee's weekly base salary considered for calculation of lump sum benefit payment     364 days  
Payments for involuntary terminations under one-time termination benefit plans     1  
U.S. Plans
        
Net periodic benefit costs, before tax        
Service cost 15 12 29 24
Interest cost 16 15 31 29
Expected return on plan assets (17) (16) (34) (31)
Settlements and curtailments 1   1 2
Actuarial losses, net 13 10 26 20
Prior service cost (credit), net (1) (1) (1) (1)
Net periodic benefit costs 27 20 52 43
Funding contributions 59 100 60 103
Non-U.S. Plans
        
Net periodic benefit costs, before tax        
Service cost 7 9 14 16
Interest cost 5 8 11 13
Expected return on plan assets (5) (8) (11) (13)
Actuarial losses, net 1 1 2 2
Net periodic benefit costs 8 10 16 18
Funding contributions 3 9 20 17
OPEB Plans
        
Net periodic benefit costs, before tax        
Interest cost     1 1
Net periodic benefit costs     1 1
Funding contributions   $ 1 $ 1 $ 2