Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2011

Accounts Receivable [Abstract]

Schedule Of Accounts Receivable

	2011			2010
U.S. government contracts	$	2,950		$	2,969
Commercial customers		1,390			1,241
Reinsurance receivables		585			487
Non-U.S. military contracts		553			514
Other		368			253
Less valuation allowance	$	(53	)		(42	)
Total	$	5,793		$	5,422

Schedule Of Accounts Receivable Under Long-Term Contracts

	Unbillable				Claims
	2011		2010		2011		2010
Current	$	1,174	$	994	$	49	$	30
Expected to be collected after one year		498		507		209		194
Total	$	1,672	$	1,501	$	258	$	224