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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2023
Oct. 31, 2022
Operating activities:        
Net income $ 1,224 $ 210 $ 2,690 $ 306
Adjustments to reconcile net income to net cash provided by operating activities:        
Depreciation and amortization [1] 862 941 3,006 2,754
Amortization of costs capitalized to obtain revenue contracts, net 482 423 1,428 1,225
Stock-based compensation expense 693 843 2,113 2,470
(Gains) losses on strategic investments, net 72 (23) 242 (75)
Changes in assets and liabilities, net of business combinations:        
Accounts receivable, net 550 471 5,905 5,486
Costs capitalized to obtain revenue contracts, net (300) (375) (906) (1,279)
Prepaid expenses and other current assets and other assets (407) (63) (750) (359)
Accounts payable and accrued expenses and other liabilities 172 (309) (1,607) (1,205)
Operating lease liabilities (139) (173) (474) (561)
Unearned revenue (1,677) (1,632) (4,816) (4,439)
Net cash provided by operating activities 1,532 313 6,831 4,323 Close
Investing activities:        
Business combinations, net of cash acquired (82) 0 (82) (439)
Purchases of strategic investments (103) (44) (390) (475)
Sales of strategic investments 80 98 102 181
Purchases of marketable securities (661) (408) (2,827) (4,132)
Sales of marketable securities 315 500 1,117 1,392
Maturities of marketable securities 563 585 1,810 1,752
Capital expenditures (166) (198) (589) (580)
Net cash provided by (used in) investing activities (54) 533 (859) (2,301) Close
Financing activities:        
Repurchases of common stock (1,925) (1,677) (5,928) (1,677)
Proceeds from employee stock plans 274 233 1,085 688
Principal payments on financing obligations (114) (233) (506) (349)
Repayments of debt 0 (1) (1,182) (3)
Net cash used in financing activities (1,765) (1,678) (6,531) (1,341) Close
Effect of exchange rate changes (32) (23) (4) (69) Close
Net increase (decrease) in cash and cash equivalents (319) (855) (563) 612 Close
Cash and cash equivalents, beginning of period 6,772 6,931 7,016 5,464
Cash and cash equivalents, end of period 6,453 6,076 6,453 6,076
Cash paid during the period for:        
Interest 28 46 164 184
Income taxes, net of tax refunds $ 458 $ 113 $ 709 $ 390
[1]     Includes amortization of intangible assets acquired through business combinations, depreciation of fixed assets and amortization and impairment of right-of-use assets.