Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash received from customers
Progress payments	$ 3,119	$ 3,149
Collections on billings	16,527	17,610
Other cash receipts	103	18
Total sources of cash - continuing operations	19,749	20,777
Uses of Cash - Continuing Operations
Cash paid to suppliers and employees	(17,131)	(18,219)
Pension contributions	(572)	(415)
Interest paid, net of interest received	(205)	(248)
Income taxes paid, net of refunds received	(791)	(933)
Excess tax benefits from stock-based compensation	(24)	(12)
Other cash payments		(34)
Total uses of cash - continuing operations	(18,723)	(19,861)
Cash provided by continuing operations	1,026	916
Cash (used in) provided by discontinued operations	(232)	150
Net cash provided by operating activities	794	1,066
Continuing Operations
Contribution received from the spin-off of Shipbuilding business	1,429
Additions to property, plant, and equipment	(324)	(301)
Decrease in restricted cash	34	5
Other investing activities, net	13	8
Cash provided by (used in) investing activities by continuing operations	1,152	(288)
Cash used in investing activities by discontinued operations	(63)	(93)
Net cash provided by (used in) investing activities	1,089	(381)
Financing Activities
Common stock repurchases	(1,598)	(1,060)
Payments of long-term debt	(750)	(91)
Dividends paid	(414)	(408)
Proceeds from exercises of stock options and issuances of common stock	97	112
Excess tax benefits from stock-based compensation	24	12
Other financing activities, net	3	3
Net cash used in financing activities	(2,638)	(1,432)
Decrease in cash and cash equivalents	(755)	(747)
Cash and cash equivalents, beginning of period	3,701	3,275
Cash and cash equivalents, end of period	$ 2,946	$ 2,528