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Inventory (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Work in process	$ 1,635	$ 1,518
Raw materials	1,258	1,109
Finished goods	57	69
Pre-owned aircraft	18	80
Total inventories	$ 2,968	$ 2,776

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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