Relationship and Transactions with Boeing - Intercompany Guarantee and Subsidy Agreements (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Guarantor Obligations [Line Items]
Finance lease income	$ 89	$ 113	$ 139
Interest income on notes receivable	43	35	76
Operating lease income	255	336	384
Net gain on disposal of assets	(1)	16	(2)
Asset impairment expense	(70)	(100)	(51)
Financial Guarantee [Member]
Guarantor Obligations [Line Items]
Finance lease income	(2)	(1)	19
Interest income on notes receivable	2	2	13
Operating lease income	43	63	50
Net gain on disposal of assets		2	9
Asset impairment expense			7
Income and Expense from Intercompany Guarantee and Subsidy Agreements	$ 43	$ 66	$ 98