Customer Financing (Carrying Values Related to Major Aircraft Concentrations) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Customer Financing [Line Items]
Customer financing carrying value	$ 3,777	$ 3,586
Operating leases	1,887	1,710
B-717 [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,314	1,415
Operating leases	353	372
B747-8 [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,120	916
Operating leases	1,094	916
MD 80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	269	314
B-757 [Member]
Customer Financing [Line Items]
Customer financing carrying value	251	270
Operating leases	44	48
B-767 [Member]
Customer Financing [Line Items]
Customer financing carrying value	178	185
Operating leases	90	84
B747-400 aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	170	122
Operating leases	170	122
B-777 [Member]
Customer Financing [Line Items]
Customer financing carrying value	164	23
B-737 [Member]
Customer Financing [Line Items]
Customer financing carrying value	106	115
Operating leases	$ 106	$ 115