Inventories, Net (Tables)

9 Months Ended

Sep. 30, 2012

Inventories

Inventories consisted of the following (in millions):

	September 30, 2012			December 31, 2011
Work-in-process, primarily related to long-term contracts and programs in progress		$7,000			$7,129
Less: customer advances and progress payments		(4,944	)		(5,425	)
		2,056			1,704
Other inventories		822			777
Total inventories, net		$2,878			$2,481