Customer Financing (Carrying Values Related to Major Aircraft Concentrations) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Customer Financing [Line Items]
Customer financing carrying value	$ 4,272		$ 4,480
Operating leases	1,936		2,038
717 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,701	[1]	1,781	[1]
Operating leases	449	[1]	465	[1]
757 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	473	[1]	561	[1]
Operating leases	408	[1]	454	[1]
MD 80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	418	[1]	446	[1]
787 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	370		286
Operating leases	370		286
747 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	336		221
Operating leases	230	[1]	221
MD-11 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	257	[1]	269	[1]
Operating leases	257	[1]	269	[1]
737 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	218		316
Operating leases	144	[1]	193
767 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	204		223
Operating leases	$ 62		$ 63

[1] Out-of-production aircraft