Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash received from customers
Collections on billings	$ 15,632	$ 16,527
Progress payments	3,233	3,119
Other cash receipts	67	103
Total sources of cash - continuing operations	18,932	19,749
Uses of cash - continuing operations
Cash paid to suppliers and employees	(16,015)	(17,131)
Pension contributions	(349)	(572)
Interest paid, net of interest received	(177)	(205)
Income taxes paid, net of refunds received	(760)	(791)
Excess tax benefits from stock-based compensation	(41)	(24)
Other cash payments	(7)	0
Total uses of cash - continuing operations	(17,349)	(18,723)
Cash provided by continuing operations	1,583	1,026
Cash used in discontinued operations	0	(232)
Net cash provided by operating activities	1,583	794
Continuing operations
Maturities of short-term investments	250	0
Capital expenditures	(196)	(326)
Contribution received from the spin-off of shipbuilding business	0	1,429
Other investing activities, net	7	49
Cash provided by investing activities from continuing operations	61	1,152
Cash used in investing activities from discontinued operations	0	(63)
Net cash provided by investing activities	61	1,089
Financing activities
Common stock repurchases	(846)	(1,598)
Cash dividends paid	(401)	(414)
Proceeds from exercises of stock options	153	97
Excess tax benefits from stock-based compensation	41	24
Payments of long-term debt	0	(750)
Other financing activities, net	(68)	3
Net cash used in financing activities	(1,121)	(2,638)
Increase (decrease) in cash and cash equivalents	523	(755)
Cash and cash equivalents, beginning of year	3,002	3,701
Cash and cash equivalents, end of period	$ 3,525	$ 2,946