Business Group Information

3 Months Ended

Apr. 01, 2012

Business Group Information [Abstract]

Business Group Information

M. BUSINESS GROUP INFORMATION

We operate in four business groups: Aerospace, Combat Systems, Marine Systems and Information Systems and Technology. We organize and measure our business groups in accordance with the nature of products and services offered. These business groups derive their revenues from business aviation; combat vehicles, weapons systems and munitions; military and commercial shipbuilding; and communications and information technology, respectively. We measure each group's profit based on operating earnings. As a result, we do not allocate net interest, other income and expense items, and income taxes to our business groups.

Summary financial information for each of our business groups follows:

	Revenues				Operating Earnings
Three Months Ended	April 3, 2011		April 1, 2012		April 3, 2011			April 1, 2012
Aerospace	$	1,353	$	1,623	$	230		$	271
Combat Systems		1,955		1,911		277			203
Marine Systems		1,676		1,605		167			185
Information Systems and Technology		2,814		2,440		276			218
Corporate*		—		—		(21	)		(17	)
	$	7,798	$	7,579	$	929		$	860

* Corporate operating results primarily consists of our stock option expense.