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Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2011
Commitments and Contingencies Disclosure [Abstract] 
Guarantee obligations [Table Text Block]
The maximum potential payments under guarantees and the carrying value of recorded liabilities related to guarantees were as follows (in millions):
 
September 30,
2011
 
December 31,
2010
Maximum potential payments
$
467

 
$
500

Carrying value of recorded liabilities related to guarantees
37

 
43

Warranty [Table Text Block]
Included in warranty cost accruals are the costs for basic warranty coverages on products sold. These costs are estimates based primarily on historical warranty claim experience. Warranty accruals accounted for in Accrued liabilities and deferred revenue were as follows (in millions):
 
First Nine Months
 
2011
 
2010
Beginning balance
$
2,646

 
$
3,147

Payments made during the period
(1,535
)
 
(1,658
)
Changes in accrual related to warranties issued during the period
1,384

 
1,163

Changes in accrual related to pre-existing warranties
164

 
113

Foreign currency translation and other
(35
)
 
(54
)
Ending balance
$
2,624

 
$
2,711