Inventoried Costs, Net (Tables)

12 Months Ended

Dec. 31, 2011

INVENTORIED COSTS, NET [Abstract]

Inventoried Costs

	December 31
$ in millions	2011				2010
Production costs of contracts in process		$	1,629			$	1,521
General and administrative expenses			221				190
			1,850				1,711
Progress payments received			(1,100	)			(962	)
			750				749
Product inventory			123				147
Total inventoried costs, net		$	873			$	896