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Employee Benefit Plans (Tables)
9 Months Ended
Sep. 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 September 30
 
 
 
 
 
Service cost
$
—

$
—

 
$
13

$
14

Interest cost
242

245

 
45

49

Expected return on plan assets
(181
)
(169
)
 
(22
)
(22
)
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

Nine Months Ended September 30
 
 
 
 
 
Service cost
$
—

$
—

 
$
39

$
44

Interest cost
726

737

 
135

147

Expected return on plan assets
(543
)
(508
)
 
(67
)
(68
)
Amortization of prior service benefit
—

—

 
(2
)
(3
)
Recognized net actuarial loss (gain)
42

36

 
(9
)
(3
)
Settlements
—

10

 
—

—

Net periodic cost
$
225

$
275

 
$
96

$
117