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Inventories - Inventories at Lower of Cost or Market (Detail) (USD $) In Millions, unless otherwise specified	Mar. 29, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Raw materials, components and sub-assemblies	$ 155	$ 168
Work in process	124	124
Finished goods	68	71
Total	$ 347	$ 363

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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