Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating Activities
Net earnings	$ 1,090	$ 977
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	217	225
Stock-based compensation	51	71
Excess tax benefits from stock-based compensation	(74)	(27)
Deferred income taxes	21	33
Changes in assets and liabilities:
Accounts receivable, net	(577)	(268)
Inventoried costs, net	(33)	62
Prepaid expenses and other assets	(23)	6
Accounts payable and other liabilities	(588)	(430)
Income taxes payable	103	60
Retiree benefits	8	(397)
Other, net	(25)	17
Net cash provided by operating activities	170	329
Investing activities
Capital expenditures	(176)	(88)
Other investing activities, net	(72)	6
Net cash used in investing activities	(248)	(82)
Financing activities
Common stock repurchases	(1,301)	(921)
Cash dividends paid	(280)	(272)
Net proceeds from issuance of long-term debt	0	2,841
Payments of long-term debt	0	877
Other financing activities, net	(15)	24
Net cash (used in) provided by financing activities	(1,596)	795
(Decrease) increase in cash and cash equivalents	(1,674)	1,042
Cash and cash equivalents, beginning of year	5,150	3,862
Cash and cash equivalents, end of period	$ 3,476	$ 4,904