Customer Financing (Carrying Values Related to Major Aircraft Concentrations) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Customer Financing [Line Items]
Customer financing carrying value	$ 3,172	$ 3,586
Operating leases	1,356	1,710
B-717 [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,347	1,415
Operating leases	359	372
747 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	727	1,038
Operating leases	700	1,038
MD 80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	278	314
Operating leases
B-757 [Member]
Customer Financing [Line Items]
Customer financing carrying value	257	270
Operating leases	45	48
B-767 [Member]
Customer Financing [Line Items]
Customer financing carrying value	186	185
Operating leases	96	84
B-737 [Member]
Customer Financing [Line Items]
Customer financing carrying value	109	115
Operating leases	109	115
MD-11 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	26	35
Operating leases	$ 26	$ 35