Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash received from customers
Collections on billings	$ 9,911	$ 11,028
Progress payments	2,553	1,975
Other cash receipts	38	80
Total sources of cash - continuing operations	12,502	13,083
Uses of cash - continuing operations
Cash paid to suppliers and employees	(10,969)	(11,692)
Pension contributions	(33)	(550)
Interest paid, net of interest received	(102)	(119)
Income taxes paid, net of refunds received	(584)	(613)
Excess tax benefits from stock-based compensation	(29)	(21)
Other cash payments	(14)	(10)
Total uses of cash - continuing operations	(11,731)	(13,005)
Cash provided by continuing operations	771	78
Cash used in discontinued operations	0	(232)
Net cash provided by (used in) operating activities	771	(154)
Continuing operations
Maturities of short-term investments	250	0
Capital expenditures	(132)	(217)
Contribution received from the spin-off of shipbuilding business	0	1,429
Proceeds from sale of business, net of cash divested	43	0
Other investing activities, net	1	41
Cash provided by investing activities from continuing operations	162	1,253
Cash used in investing activities from discontinued operations	0	(63)
Net cash provided by investing activities	162	1,190
Financing activities
Common stock repurchases	(555)	(1,013)
Cash dividends paid	(265)	(277)
Proceeds from exercises of stock options	67	86
Excess tax benefits from stock-based compensation	29	21
Payments of long-term debt	0	(750)
Other financing activities, net	(63)	6
Net cash used in financing activities	(787)	(1,927)
Increase (decrease) in cash and cash equivalents	146	(891)
Cash and cash equivalents, beginning of year	3,002	3,701
Cash and cash equivalents, end of period	$ 3,148	$ 2,810