Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
Cash flows from operating activities:
Consolidated net income	$ 2,811	$ 4,074
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	2,661	2,791
Net unrealized and realized (gains) and losses	2,077	(783)
Losses on disposal of business operations	433	0
Deferred income taxes	(155)	84
Other operating activities	270	(51)
Changes in certain assets and liabilities, net of effects of acquisitions and dispositions:
Receivables, net	828	924
Inventories	(1,487)	2,221
Accounts payable	(1,004)	(1,183)
Accrued liabilities	(4,004)	(2,109)
Accrued income taxes	428	1,049
Net cash provided by operating activities	2,858	7,017
Cash flows from investing activities:
Payments for property and equipment	(2,214)	(1,752)
Proceeds from the disposal of property and equipment	72	60
Proceeds from disposal of certain operations, net of divested cash	7,935	0
Payments for business acquisitions, net of cash acquired	0	(10)
Other investing activities	57	6
Net cash provided by (used in) investing activities	5,850	(1,696)
Cash flows from financing activities:
Net change in short-term borrowings	138	3,542
Repayments of long-term debt	(510)	0
Dividends paid	(1,549)	(1,529)
Purchase of Company stock	(2,809)	(723)
Other financing activities	(669)	(725)
Net cash (used in) provided by financing activities	(5,399)	565
Effect of exchange rates on cash, cash equivalents and restricted cash	(51)	(415)
Net increase in cash, cash equivalents and restricted cash	3,258	5,471
Change in cash and cash equivalents classified as held for sale	1,848	0
Cash, cash equivalents and restricted cash at beginning of year	17,788	9,514
Cash, cash equivalents and restricted cash at end of period	$ 22,894	$ 14,985