Customer Financing (Carrying Values Related to Major Aircraft Concentrations) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Customer Financing [Line Items]
Customer financing carrying value	$ 3,562		$ 4,020
Operating leases	1,425		1,734
717 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	1,647	[1]	1,674	[1]
Operating leases	438	[1]	444	[1]
757 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	436	[1]	453	[1]
Operating leases	396	[1]	402	[1]
MD 80 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	403	[1]	411	[1]
Operating leases		[1]		[1]
MD-11 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	212	[1]	220	[1]
Operating leases	212	[1]	220	[1]
767 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	206		207
Operating leases	54		60
737 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	202		210
Operating leases	133		138
747 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value	177		286
Operating leases	177		183
787 Aircraft [Member]
Customer Financing [Line Items]
Customer financing carrying value			273
Operating leases			$ 273

[1] Out-of-production aircraft