Customer Financing (Schedule of Customer Financing Carrying Values Related to Major Aircraft Concentrations) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Customer Financing [Line Items]
Operating lease equipment, at cost, less accumulated depreciation	$ 2,038		$ 1,991
717 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,781	[1]	1,906	[1]
Operating lease equipment, at cost, less accumulated depreciation	465		480
757 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	561	[1]	631	[1]
Operating lease equipment, at cost, less accumulated depreciation	454		451
MD-80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	446	[1],[2]	485	[1],[2]
Operating lease equipment, at cost, less accumulated depreciation	0		0
737 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	316		394
Operating lease equipment, at cost, less accumulated depreciation	193		242
787 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	286
Operating lease equipment, at cost, less accumulated depreciation	286		0
MD-11 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	269	[1]	321	[1]
Operating lease equipment, at cost, less accumulated depreciation	269		321
767 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	223		307
Operating lease equipment, at cost, less accumulated depreciation	$ 63		$ 103

[1] Out-of-production aircraft

[2] Disclosure omitted from 2011 financial statements