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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 12 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2022
Operating activities:      
Net income $ 4,136 $ 208 $ 1,444
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization [1] 3,959 3,786 3,298
Amortization of costs capitalized to obtain revenue contracts, net 1,925 1,668 1,348
Stock-based compensation expense 2,787 3,279 2,779
(Gains) losses on strategic investments, net 277 239 (1,211)
Changes in assets and liabilities, net of business combinations:      
Accounts receivable, net (659) (995) (1,824)
Costs capitalized to obtain revenue contracts, net (1,872) (2,345) (2,283)
Prepaid expenses and other current assets and other assets (843) (302) 114
Accounts payable and accrued expenses and other liabilities (478) 528 507
Operating lease liabilities (621) (699) (801)
Unearned revenue 1,623 1,744 2,629
Net cash provided by operating activities 10,234 7,111 6,000 Close
Investing activities:      
Business combinations, net of cash acquired (82) (439) (14,876)
Purchases of strategic investments (496) (550) (1,718)
Sales of strategic investments 108 355 2,201
Purchases of marketable securities (3,761) (4,777) (5,674)
Sales of marketable securities 1,511 1,771 4,179
Maturities of marketable securities 2,129 2,449 2,069
Capital expenditures (736) (798) (717)
Net cash used in investing activities (1,327) (1,989) (14,536) Close
Financing activities:      
Proceeds from issuance of debt, net of issuance costs 0 0 7,906
Repayments of Slack Convertible Notes, net of capped call proceeds 0 0 (1,197)
Repurchases of common stock (7,620) (4,000) 0
Proceeds from employee stock plans 1,954 861 1,289
Principal payments on financing obligations (629) (419) (156)
Repayments of debt (1,182) (4) (4)
Net cash provided by (used in) financing activities (7,477) (3,562) 7,838 Close
Effect of exchange rate changes 26 (8) (33) Close
Net increase (decrease) in cash and cash equivalents 1,456 1,552 (731) Close
Cash and cash equivalents, beginning of period 7,016 5,464 6,195
Cash and cash equivalents, end of period 8,472 7,016 5,464
Cash paid during the period for:      
Interest 254 275 187
Income taxes, net of tax refunds 1,027 510 196
Non-cash investing and financing activities:      
Fair value of equity awards assumed 0 7 205
Fair value of common stock issued as consideration for business combinations $ 0 $ 0 $ 11,064
[1]     Includes amortization of intangible assets acquired through business combinations, depreciation of fixed assets and amortization and impairment of right-of-use assets.