Inventories (Detail) (USD $) In Millions, unless otherwise specified	Jun. 29, 2014	Dec. 31, 2013
Inventory [Line Items]
Work-in-process, primarily related to long-term contracts and programs in progress	$ 7,341	$ 7,073
Less: customer advances and progress payments	(5,271)	(4,834)
Inventory for long term contracts or programs net of customer advances and progress payments	2,070	2,239
Other inventories	576	738
Total inventories, net	$ 2,646	$ 2,977