Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net earnings	$ 2,357	$ (332)	$ 2,526
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation of property, plant and equipment	393	386	354
Amortization of intangible assets	163	234	238
Goodwill and intangible asset impairments	0	2,295	111
Stock-based compensation expense	120	114	128
Excess tax benefit from stock-based compensation	(23)	(29)	(24)
Deferred income tax (benefit) provision	104	(148)	14
Discontinued operations, net of tax	129	0	26
(Increase) decrease in assets, net of effects of business acquisitions:
Accounts receivable	(205)	240	(397)
Contracts in process	177	149	(62)
Inventories	(200)	(478)	(186)
Increase (decrease) in liabilities, net of effects of business acquisitions:
Accounts payable	(223)	(441)	17
Customer advances and deposits	330	730	629
Other current liabilities	(126)	22	86
Other, net	110	(55)	(222)
Net cash provided by operating activities	3,106	2,687	3,238
Cash flows from investing activities:
Capital expenditures	(440)	(450)	(458)
Purchases of available-for-sale securities	(135)	(252)	(373)
Sales of available-for-sale securities	99	186	107
Maturities of available-for-sale securities	14	110	235
Business acquisitions, net of cash acquired	(1)	(444)	(1,560)
Purchases of held-to-maturity securities	0	(260)	(459)
Maturities of held-to-maturity securities	0	224	441
Sales of held-to-maturity securities	0	211	0
Other, net	96	19	93
Net cash used by investing activities	(367)	(656)	(1,974)
Cash flows from financing activities:
Purchases of common stock	(740)	(602)	(1,468)
Dividends paid	(591)	(893)	(673)
Proceeds from option exercises	583	146	198
Repayment of fixed-rate notes	0	(2,400)	(750)
Proceeds from fixed-rate notes	0	2,382	1,497
Other, net	23	(15)	(5)
Net cash used by financing activities	(725)	(1,382)	(1,201)
Net cash used by discontinued operations	(9)	(2)	(27)
Net increase in cash and equivalents	2,005	647	36
Cash and equivalents at beginning of year	3,296	2,649	2,613
Cash and equivalents at end of year	$ 5,301	$ 3,296	$ 2,649