Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014
Operating activities
Net earnings	$ 1,807	$ 1,822
Adjustments to reconcile net earnings to net cash provided by operating activities
Depreciation and amortization	490	479
Stock-based compensation	89	97
Changes in assets and liabilities
Receivables, net	(1,183)	(598)
Inventories, net	(154)	307
Accounts payable	453	557
Customer advances and amounts in excess of costs incurred	(211)	(160)
Postretirement benefit plans	580	125
Income taxes	471	311
Other, net	(122)	137
Net cash provided by operating activities	2,220	3,077
Investing activities
Capital expenditures	(309)	(253)
Acquisitions of businesses and investments in affiliates		(172)
Other, net	91	(1)
Net cash used for investing activities	(218)	(426)
Financing activities
Issuance of long-term debt, net of related costs	2,213
Repurchases of common stock	(1,541)	(1,230)
Proceeds from stock option exercises	84	223
Dividends paid	(965)	(865)
Other, net	(37)	40
Net cash used for financing activities	(246)	(1,832)
Net change in cash and cash equivalents	1,756	819
Cash and cash equivalents at beginning of period	1,446	2,617
Cash and cash equivalents at end of period	$ 3,202	$ 3,436