Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Sources of cash—continuing operations
Cash received from customers	$ 24,631	$ 25,364	$ 26,431
Other cash receipts	99	99	149
Total sources of cash—continuing operations	24,730	25,463	26,580
Uses of cash—continuing operations
Cash paid to suppliers and employees	(20,473)	(21,074)	(22,059)
Pension contributions	(579)	(367)	(1,084)
Interest paid, net of interest received	(234)	(200)	(227)
Income taxes paid, net of refunds received	(880)	(1,119)	(810)
Other cash payments	(81)	(63)	(53)
Total uses of cash—continuing operations	(22,247)	(22,823)	(24,233)
Cash provided by continuing operations	2,483	2,640	2,347
Cash used in discontinued operations	0	0	(232)
Net cash provided by operating activities	2,483	2,640	2,115
Continuing operations
Capital expenditures	(364)	(331)	(492)
Maturities of short-term investments	0	250	200
Contribution received from the spin-off of shipbuilding business	0	0	1,429
Purchases of short-term investments	0	0	(450)
Other investing activities, net	18	(3)	56
Cash (used in) provided by investing activities from continuing operations	(346)	(84)	743
Cash used in investing activities from discontinued operations	0	0	(63)
Net cash (used in) provided by investing activities	(346)	(84)	680
Financing activities
Net proceeds from issuance of long-term debt	2,841	0	0
Common stock repurchases	(2,371)	(1,316)	(2,295)
Payments of long-term debt	(877)	0	(768)
Cash dividends paid	(545)	(535)	(543)
Proceeds from exercises of stock options	184	188	101
Other financing activities, net	(81)	(33)	11
Net cash used in financing activities	(849)	(1,696)	(3,494)
Increase (decrease) in cash and cash equivalents	1,288	860	(699)
Cash and cash equivalents, beginning of year	3,862	3,002	3,701
Cash and cash equivalents, end of year	$ 5,150	$ 3,862	$ 3,002