Costs and Estimated Earnings on Uncompleted Contracts

6 Months Ended

Jun. 30, 2011

Costs and Estimated Earnings on Uncompleted Contracts [Abstract]

Costs and Estimated Earnings on Uncompleted Contracts

4. Costs and Estimated Earnings on Uncompleted Contracts

Costs and estimated earnings on uncompleted contracts consist of (in millions):

	June 30,			December 31,
	2011			2010
Costs incurred on uncompleted contracts	$	6,868		$	6,676
Estimated earnings		4,743			4,665
		11,611			11,341
Less: Billings to date		11,890			11,037
	$	(279	)	$	304
Costs and estimated earnings in excess of billings on uncompleted contracts	$	499		$	815
Billings in excess of costs and estimated earnings on uncompleted contracts		(778	)		(511	)
	$	(279	)	$	304