Oil Refinery (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Segment results are prepared based on our internal accounting methods described below, with reconciliations to consolidated amounts in accordance with GAAP. Our segments are not designed to measure operating income or loss directly related to the products and services included in each segment on a stand-alone basis.

	Three Months Ended March 31, 2013
(in millions)	Airline		Refinery			Intersegment Sales/ Other				Consolidated
Operating revenue:	$	8,500	$	1,731						$	8,500
Sales to airline segment						$	(292	)	(1)
Exchanged products						(1,321		)	(2)
Sales of by-products to third parties						(118		)	(3)
Operating income (loss)(4)	244		(22		)	—				222
Interest expense, net	178		—			—				178
Depreciation and amortization expense	401		4			—				405
Total assets, end of period	43,789		1,279			—				45,068
Capital expenditures	641		6			—				647

⁽¹⁾  Represents transfers, valued on a market price basis, from the refinery to the airline segment for use in airline operations. We determine market price by reference to the market index for the primary delivery location for jet fuel from the refinery, which is New York harbor.

⁽²⁾  Represents value of products exchanged under our buy/sell agreements, as discussed above, determined on a market price basis.

⁽³⁾  Represents sales of refinery by-products to third parties. Such products are generally sold at or near cost; accordingly, margin on such sales is de minimis. By-products are produced as a result of the refining of crude oil into gasoline, diesel and jet fuel.

⁽⁴⁾  Includes allocation of refinery's inventory price risk to the airline segment.