Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Cash flows from operating activities:
Consolidated net income	$ 10,307	$ 10,332
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:
Depreciation and amortization	7,374	7,023
Deferred income taxes	1,167	(987)
Other operating activities	(387)	644
Changes in certain assets and liabilities, net of effects of acquisitions:
Receivables, net	271	783
Inventories	(5,516)	(6,637)
Accounts payable	5,121	3,603
Accrued liabilities	1,256	662
Accrued income taxes	51	(418)
Net cash provided by operating activities	19,644	15,005
Cash flows from investing activities:
Payments for property and equipment	(7,459)	(8,223)
Proceeds from the disposal of property and equipment	783	362
Proceeds from the disposal of certain operations	0	246
Purchase of available for sale securities	(1,901)	0
Investment and business acquisitions, net of cash acquired	(2,406)	0
Other investing activities	(67)	48
Net cash used in investing activities	(11,050)	(7,567)
Cash flows from financing activities:
Net change in short-term borrowings	2,302	3,537
Proceeds from issuance of long-term debt	134	41
Payments of long-term debt	(2,040)	(4,422)
Dividends paid	(4,682)	(4,728)
Purchase of Company stock	(6,254)	(1,720)
Dividends paid to noncontrolling interest	(320)	(609)
Purchase of noncontrolling interest	(89)	(890)
Other financing activities	(186)	(468)
Net cash used in financing activities	(11,135)	(9,259)
Effect of exchange rates on cash and cash equivalents	(225)	(324)
Net increase (decrease) in cash and cash equivalents	(2,766)	(2,145)
Cash and cash equivalents at beginning of year	8,705	9,135
Cash and cash equivalents at end of period	$ 5,939	$ 6,990