Customer Financing (Carrying Values Related to Major Aircraft Concentrations) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Customer Financing [Line Items]
Operating leases	$ 1,956		$ 2,038
717 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,755	[1]	1,781	[1]
Operating leases	460	[1]	465	[1]
757 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	506	[1]	561	[1]
Operating leases	422	[1]	454	[1]
M D 80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	444	[1]	446	[1]
747 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	351		221
Operating leases	246		221
737 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	289		316
Operating leases	170		193
787 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	282		286
Operating leases	282		286
MD-11 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	265	[1]	269	[1]
Operating leases	265	[1]	269	[1]
767 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	207		223
Operating leases	$ 63		$ 63

[1] Out-of-production aircraft