Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash received from customers
Progress payments	$ 4,803	$ 4,437	$ 2,957
Collections on billings	21,628	23,531	24,955
Other cash receipts	149	40	71
Total sources of cash - continuing operations	26,580	28,008	27,983
Uses of Cash - Continuing Operations
Cash paid to suppliers and employees	(22,059)	(23,759)	(23,761)
Pension contributions	(1,084)	(789)	(657)
Interest paid, net of interest received	(227)	(269)	(257)
Income taxes paid, net of refunds received	(810)	(1,071)	(774)
Income taxes paid on sale of business			(508)
Excess tax benefits from stock-based compensation	(17)	(22)	(2)
Other cash payments	(36)	(42)	(29)
Total uses of cash - continuing operations	(24,233)	(25,952)	(25,988)
Cash provided by continuing operations	2,347	2,056	1,995
Cash (used in) provided by discontinued operations	(232)	397	138
Net cash provided by operating activities	2,115	2,453	2,133
Continuing Operations
Contribution received from the spin-off of Shipbuilding business	1,429
Additions to property, plant, and equipment	(488)	(579)	(473)
Purchase of short term investments	(450)	(2)
Maturities of short term investments	200
Proceeds from sale of business, net of cash divested	4	14	1,650
Other investing activities, net	48	(4)	(127)
Cash provided by (used in) investing activities by continuing operations	743	(571)	1,050
Cash used in investing activities by discontinued operations	(63)	(189)	(184)
Net cash provided by (used in) investing activities	680	(760)	866
Financing Activities
Common stock repurchases	(2,295)	(1,177)	(1,100)
Payments of long-term debt	(768)	(1,011)	(474)
Proceeds from issuance of long-term debt		1,484	843
Cash dividends paid	(543)	(545)	(539)
Proceeds from exercises of stock options and common stock issuances	101	142	51
Excess tax benefits from stock-based compensation	17	22	2
Other financing activities, net	(6)	(2)	(12)
Cash used in financing activities by continuing operations	(3,494)	(1,087)	(1,229)
Cash used in financing activities by discontinued operations		(179)
Net cash used in financing activities	(3,494)	(1,266)	(1,229)
(Decrease) increase in cash and cash equivalents	(699)	427	1,770
Cash and cash equivalents, beginning of year	3,701	3,274	1,504
Cash and cash equivalents, end of year	$ 3,002	$ 3,701	$ 3,274