Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012
Cash flows from operating activities:
Net earnings	$ 1,211	$ 1,198
Adjustments to reconcile net earnings to net cash provided by operating activities -
Depreciation of property, plant and equipment	191	189
Amortization of Intangible Assets	89	115
Stock-based compensation expense	61	69
Excess tax benefit from stock-based compensation	(16)	(22)
Deferred income tax provision	42	3
(Increase) decrease in assets, net of effects of business acquisitions -
Accounts receivable	(90)	(110)
Contracts in process	(125)	194
Inventories	(167)	(316)
Increase (decrease) in liabilities, net of effects of business acquisitions -
Accounts payable	(25)	(342)
Customer advances and deposits	(54)	226
Increase (Decrease) in Income Taxes Payable	50	67
Other current and noncurrent liabilities	(156)	(114)
Other, net	72	46
Net cash provided by operating activities	1,083	1,203
Cash flows from investing activities:
Capital expenditures	(168)	(176)
Purchases of available-for-sale securities	(43)	(100)
Business acquisitions, net of cash acquired	(1)	(165)
Other, net	48	(65)
Net cash used by investing activities	(164)	(506)
Cash flows from financing activities:
Purchases of common stock	(485)	(592)
Proceeds from option exercises	212	111
Dividends paid	(198)	(353)
Other, net	16	28
Net cash used by financing activities	(455)	(806)
Net cash used by discontinued operations	(3)	0
Net increase (decrease) in cash and equivalents	461	(109)
Cash and equivalents at beginning of period	3,296	2,649
Cash and equivalents at end of period	3,757	2,540
Cash payments for:
Income taxes	468	506
Interest	$ 46	$ 78