Customer Financing (Schedule of Customer Financing Carrying Values Related to Major Aircraft Concentrations) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Customer Financing [Line Items]
Gross customer financing	$ 4,211	$ 3,586
Operating lease equipment	1,922	1,710
B-717 Aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	1,282	1,415
Operating lease equipment	301	372
B-747-8 [Member]
Customer Financing [Line Items]
Gross customer financing	1,111	916
Operating lease equipment	1,086	916
MD-80 Aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	259	314
B-757 Aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	246	270
Operating lease equipment	43	48
B-767 Aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	170	185
Operating lease equipment	85	84
B-777 [Member]
Customer Financing [Line Items]
Gross customer financing	165	23
B-747-400 aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	149	122
Operating lease equipment	149	122
B-737 Aircraft [Member]
Customer Financing [Line Items]
Gross customer financing	103	115
Operating lease equipment	$ 103	$ 115