Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash received from customers
Progress payments	$ 1,975	$ 1,976
Collections on billings	11,028	11,653
Other cash receipts	80	3
Total sources of cash - continuing operations	13,083	13,632
Uses of Cash - Continuing Operations
Cash paid to suppliers and employees	(11,692)	(12,374)
Pension contributions	(550)	(363)
Interest paid, net of interest received	(119)	(138)
Income taxes paid, net of refunds received	(613)	(632)
Excess tax benefits from stock-based compensation	(21)	(10)
Other cash payments	(10)	(15)
Total uses of cash - continuing operations	(13,005)	(13,532)
Cash provided by continuing operations	78	100
Cash used in discontinued operations	(232)	(12)
Net cash (used in) provided by operating activities	(154)	88
Continuing Operations
Contribution received from the spin-off of Shipbuilding business	1,429
Additions to property, plant, and equipment	(216)	(178)
Decrease in restricted cash	31	5
Proceeds from sale of business, net of cash divested		13
Other investing activities, net	9	1
Cash provided by (used in) investing activities by continuing operations	1,253	(159)
Cash used in investing activities by discontinued operations	(63)	(59)
Net cash provided by (used in) investing activities	1,190	(218)
Financing Activities
Common stock repurchases	(1,013)	(855)
Payments of long-term debt	(750)	(90)
Dividends paid	(277)	(270)
Proceeds from exercises of stock options and issuances of common stock	86	103
Excess tax benefits from stock-based compensation	21	10
Other financing activities, net	6	1
Net cash used in financing activities	(1,927)	(1,101)
Decrease in cash and cash equivalents	(891)	(1,231)
Cash and cash equivalents, beginning of period	3,701	3,275
Cash and cash equivalents, end of period	$ 2,810	$ 2,044