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Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2011
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]  
Schedule of Net Benefit Costs [Table Text Block]
The following table shows the components of net periodic cost:
 
Pension Benefits
Other Postretirement and
Postemployment Benefits
(in millions)
2011
2010
2011
2010
Three Months Ended June 30
 
 
 
 
Service cost
$
—


$
—


$
13


$
15


Interest cost
242


246


45


49


Expected return on plan assets
(181
)
(170
)
(22
)
(23
)
Amortization of prior service benefit
—


—


(1
)
(1
)
Recognized net actuarial loss (gain)
14


12


(3
)
(1
)
Settlements
—


4


—


—


Net periodic cost
$
75


$
92


$
32


$
39


Six Months Ended June 30
 
 
 
 
Service cost
$
—


$
—


$
26


$
30


Interest cost
484


492


90


98


Expected return on plan assets
(362
)
(339
)
(45
)
(46
)
Amortization of prior service benefit
—


—


(1
)
(2
)
Recognized net actuarial loss (gain)
28


24


(6
)
(2
)
Settlements
—


6


—


—


Net periodic cost
$
150


$
183


$
64


$
78