Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Cash flows from operating activities:
Consolidated net income	$ 3,906	$ 2,276
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	2,714	2,678
Unrealized (gains) and losses	(783)	1,845
Deferred income taxes	(124)	50
Other operating activities	(75)	(265)
Changes in certain assets and liabilities, net of effects of acquisitions:
Receivables, net	970	1,134
Inventories	(421)	547
Accounts payable	(1,854)	(1,770)
Accrued liabilities	(1,514)	(1,813)
Accrued income taxes	346	49
Net cash provided by operating activities	3,563	5,161
Cash flows from investing activities:
Payments for property and equipment	(2,205)	(1,818)
Proceeds from the disposal of property and equipment	42	198
Proceeds from the disposal of certain operations	833	0
Payments for business acquisitions, net of cash acquired	56	0
Other investing activities	251	(62)
Net cash used in investing activities	(1,135)	(1,682)
Cash flows from financing activities:
Net change in short-term borrowings	(399)	2,501
Proceeds from issuance of long-term debt	3,978	0
Repayments of long-term debt	(364)	(2,521)
Dividends paid	(1,520)	(1,533)
Purchase of Company stock	(2,135)	(539)
Dividends paid to noncontrolling interest	(96)	(66)
Other financing activities	(310)	(328)
Net cash used in financing activities	(846)	(2,486)
Effect of exchange rates on cash, cash equivalents and restricted cash	(46)	143
Net increase (decrease) in cash, cash equivalents and restricted cash	1,536	1,136
Cash, cash equivalents and restricted cash at beginning of year	7,756	7,014
Cash, cash equivalents and restricted cash at end of period	$ 9,292	$ 8,150