Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Statement of Cash Flows [Abstract]
Net earnings	$ 1,300	$ 16,540	$ 15,409
Adjustments to reconcile net earnings to cash flows from operating activities:
Depreciation and amortization of property and intangibles	5,642	3,754	3,746
Stock based compensation	962	878	874
Venezuela adjustments	0	0	122
Asset write-downs	795	283	624
Net gain on sale of assets/businesses	(1,307)	(563)	(2,583)
Deferred tax provision	2,406	(341)	(270)
Accounts receivable allowances	17	(11)	18
Changes in assets and liabilities, net of effects from acquisitions and divestitures:
Increase in accounts receivable	(633)	(1,065)	(433)
Decrease/(Increase) in inventories	581	(249)	(449)
Increase in accounts payable and accrued liabilities	2,725	656	287
Increase in other current and non-current assets	(411)	(529)	(103)
Increase/(Decrease) in other current and non-current liabilities	8,979	(586)	2,327
Net cash flows from operating activities	21,056	18,767	19,569
Cash flows from investing activities
Additions to property, plant and equipment	(3,279)	(3,226)	(3,463)
Proceeds from the disposal of assets/businesses, net	1,832	1,267	3,464
Acquisitions, net of cash acquired (Note 20)	(35,151)	(4,509)	(954)
Purchases of investments	(6,153)	(33,950)	(40,828)
Sales of investments	28,117	35,780	34,149
Other (primarily intangibles)	(234)	(123)	(103)
Net cash used by investing activities	(14,868)	(4,761)	(7,735)
Cash flows from financing activities
Dividends to shareholders	(8,943)	(8,621)	(8,173)
Repurchase of common stock	(6,358)	(8,979)	(5,290)
Proceeds from short-term debt	869	111	2,416
Retirement of short-term debt	(1,330)	(2,017)	(1,044)
Proceeds from long-term debt, net of issuance costs	8,992	12,004	75
Retirement of long-term debt	(1,777)	(2,223)	(68)
Proceeds from the exercise of stock options/employee withholding tax on stock awards, net	1,062	1,189	1,005
Other	(188)	(15)	(57)
Net cash used by financing activities	(7,673)	(8,551)	(11,136)
Effect of exchange rate changes on cash and cash equivalents	337	(215)	(1,489)
(Decrease)/Increase in cash and cash equivalents	(1,148)	5,240	(791)
Cash and cash equivalents, beginning of year (Note 1)	18,972	13,732	14,523
Cash and cash equivalents, end of year (Note 1)	17,824	18,972	13,732
Supplemental cash flow data
Interest	960	730	617
Interest, net of amount capitalized	866	628	515
Income taxes	3,312	2,843	2,865
Supplemental schedule of non-cash investing and financing activities
Treasury stock issued for employee compensation and stock option plans, net of cash proceeds/ employee withholding tax on stock awards	2,062	2,043	1,486
Conversion of debt	16	35	16
Acquisitions
Fair value of assets acquired	36,937	4,586	1,174
Fair value of liabilities assumed and noncontrolling interests	(1,786)	(77)	(220)
Net cash paid for acquisitions	$ 35,151	$ 4,509	$ 954