Receivables, net (Tables)

12 Months Ended

Dec. 31, 2012

Receivables

Receivables consisted of the following (in millions):

	2012				2011
U.S. Government
Amounts billed		$	1,088			$	1,273
Unbilled costs and accrued profits			5,630				4,961
Less: customer advances and progress payments			(1,048	)			(1,086	)
Total U.S. Government receivables, net			5,670				5,148
Other governments and commercial
Amounts billed			376				396
Unbilled costs and accrued profits			789				774
Less: customer advances			(272	)			(254	)
Total other governments and commercial receivables, net			893				916
Total receivables, net		$	6,563			$	6,064