Receivables, net (Tables)

12 Months Ended

Dec. 31, 2017

Receivables [Abstract]

Receivables

Receivables, net consisted of the following (in millions):

	2017			2016
U.S. Government
Amounts billed	$	1,433		$	792
Unbilled costs and accrued profits	6,337			6,877
Less: customer advances and progress payments	(1,042		)	(1,346		)
Total U.S. Government receivables, net	6,728			6,323
Other governments and commercial
Amounts billed	687			546
Unbilled costs and accrued profits	1,651			1,847
Less: customer advances	(463		)	(514		)
Total other governments and commercial receivables, net	1,875			1,879
Total receivables, net	$	8,603		$	8,202