Consolidated Statements of Cash Flows - USD ($) $ in Millions		9 Months Ended
		Sep. 27, 2015	Sep. 28, 2014
Operating activities
Net earnings		$ 2,672	$ 2,710
Adjustments to reconcile net earnings to net cash provided by operating activities
Depreciation and amortization		726	726
Stock-based compensation		118	128
Severance charges	[1]	35
Changes in assets and liabilities
Receivables, net		(861)	(231)
Inventories, net		(359)	66
Accounts payable		637	596
Customer advances and amounts in excess of costs incurred		(421)	(458)
Postretirement benefit plans		868	(96)
Income taxes		126	270
Other, net		196	356
Net cash provided by operating activities		3,737	4,067
Investing activities
Capital expenditures		(500)	(456)
Acquisitions of businesses and investments in affiliates			(622)
Other, net		89	14
Net cash used for investing activities		(411)	(1,064)
Financing activities
Issuance of long-term debt, net of related costs		2,213
Repurchases of common stock		(2,364)	(1,676)
Proceeds from stock option exercises		126	278
Dividends paid		(1,427)	(1,286)
Other, net		(20)	27
Net cash used for financing activities		(1,472)	(2,657)
Net change in cash and cash equivalents		1,854	346
Cash and cash equivalents at beginning of period		1,446	2,617
Cash and cash equivalents at end of period		$ 3,300	$ 2,963

[1] Severance charges for 2015 consist of amounts associated with the planned elimination of certain positions at our IS&GS business segment (Note 9, under the caption "Restructuring Charges"). Severance charges for initiatives that are not significant are included in business segment operating profit.