Customer Financing (Carrying Values Related to Major Aircraft Concentrations) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Customer Financing [Line Items]
Customer financing carrying value	$ 3,440		$ 4,020
Operating leases	1,398		1,734
717 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,619	[1]	1,674	[1]
Operating leases	433	[1]	444	[1]
757 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	424	[1]	453	[1]
Operating leases	389	[1]	402	[1]
MD 80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	367	[1]	411	[1]
Operating leases		[1]		[1]
MD-11 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	206	[1]	220	[1]
Operating leases	206	[1]	220	[1]
737 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	198		210
Operating leases	131		138
747 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	172	[1]	286	[1]
Operating leases	172		183
767 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	183		207
Operating leases	53		60
787 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value			273
Operating leases			$ 273

[1] Out-of-production aircraft