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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]



	(in millions)
2012	$	1,891
2013	1,922
2014	1,881
2015	1,725
2016	1,573
2017 and thereafter	9,148
	$	18,140

Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]



	(in millions)
2012	$	11,075
2013	6,240
2014	5,657
2015	4,896
2016	716
2017 and thereafter	921
	$	29,505

- Definition

Tabular disclosure of unconditional purchase obligations that are not recognized as a liability on the balance sheet, including the nature and significant terms of an unconditional purchase obligation; the amount of the fixed and determinable portion of the obligation as of the date of the latest balance sheet presented in the aggregate and, if determinable, for each of the five succeeding fiscal years; the nature of any variable components of the obligation; the amount purchased under the obligation (for example, the take-or-pay or throughput contract) for the reporting period; and may include the amount of imputed interest necessary to reduce the obligation to present value.

+ References+ Details