Customer Financing (Carrying Values Related to Major Aircraft Concentrations) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Customer Financing [Line Items]
Customer financing carrying value	$ 3,627	$ 4,020
Operating leases	1,616	1,734
717 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,591	1,674
Operating leases	426	444
747 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	461	286
Operating leases	461	183
757 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	386	453
Operating leases	355	402
MD 80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	370	411
Operating leases
737 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	193	210
Operating leases	129	138
MD-11 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	183	220
Operating leases	183	220
767 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	173	207
Operating leases	47	60
787 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value		273
Operating leases		$ 273