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Retirement Benefits (Tables)
 3 Months Ended
Mar. 31, 2012
Compensation and Retirement Disclosure [Abstract]  
Schedule of defined benefit plans expense [Table Text Block]
The expense for our defined benefit pension and OPEB plans for the periods ended March 31 was as follows (in millions):
 
First Quarter
 
Pension Benefits
 
 
 
 
 
U.S. Plans
 
Non-U.S. Plans
 
Worldwide OPEB
 
2012
 
2011
 
2012
 
2011
 
2012
 
2011
Service cost
$
130

 
$
117

 
$
93

 
$
80

 
$
17

 
$
15

Interest cost
552

 
594

 
298

 
303

 
72

 
82

Expected return on assets
(718
)
 
(757
)
 
(334
)
 
(348
)
 
—

 
—

Amortization of
 

 
 

 
 

 
 

 
 

 
 

Prior service costs/(credits)
55

 
86

 
18

 
18

 
(136
)
 
(152
)
(Gains)/Losses
106

 
48

 
103

 
76

 
32

 
29

Separation programs/other
7

 
(1
)
 
34

 
12

 
1

 
—

(Gains)/Losses from curtailments and settlements
—

 
—

 
—

 
—

 
(10
)
 
—

Net expense/(income)
$
132

 
$
87

 
$
212

 
$
141

 
$
(24
)
 
$
(26
)