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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jan. 31, 2022 | Jan. 31, 2021 | Jan. 31, 2020
Operating activities: |  |  |
Net income | $ 497.0 | $ 1,208.2 | $ 214.5
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation, amortization, and accretion | 148.1 | 123.8 | 127.3
Stock-based compensation expense | 555.4 | 398.4 | 362.4
Deferred income taxes | (7.8) | (778.6) | 10.3
Lease-related asset impairments | 103.7 | 0.0 | 0.0
Restructuring and other exit costs, net | 0.0 | 0.0 | 0.5
Other operating activities | 17.6 | 38.8 | (11.9)
Changes in operating assets and liabilities, net of business combinations: |  |  |
Accounts receivable | (66.2) | 12.6 | (178.5)
Prepaid expenses and other assets | (133.5) | (56.4) | 58.5
Accounts payable and other liabilities | 9.9 | 129.6 | (90.8)
Deferred revenue | 419.4 | 344.4 | 916.7
Accrued income taxes | (12.3) | 16.4 | 6.1
Net cash provided by operating activities | 1,531.3 | 1,437.2 | 1,415.1
Investing activities: |  |  |
Purchases of marketable securities | (311.1) | (21.0) | (19.9)
Sales of marketable securities | 12.0 | 0.0 | 22.4
Maturities of marketable securities | 25.8 | 17.0 | 5.0
Purchases of developed technologies | (10.5) | (4.8) | 0.0
Business combinations, net of cash acquired | (1,250.3) | (246.2) | 0.0
Capital expenditures | (56.0) | (91.1) | (53.2)
Other investing activities | (4.5) | (57.8) | (11.6)
Net cash used in investing activities | (1,594.6) | (403.9) | (57.3)
Financing activities: |  |  |
Proceeds from issuance of common stock, net of issuance costs | 113.7 | 114.1 | 93.7
Taxes paid related to net share settlement of equity awards | (193.5) | (156.7) | (112.5)
Repurchase and retirement of common stock | (1,078.5) | (551.7) | (442.5)
Proceeds from debt, net of discount | 997.0 | 0.0 | 498.9
Repayments of debt | 0.0 | (450.0) | (500.0)
Other financing activities | (7.3) | (2.5) | (4.4)
Net cash used in financing activities | (168.6) | (1,046.8) | (466.8)
Effect of exchange rate changes on cash and cash equivalents | (11.9) | 11.0 | (2.3)
Net (decrease) increase in cash and cash equivalents | (243.8) | (2.5) | 888.7
Cash and cash equivalents at beginning of fiscal year | 1,772.2 | 1,774.7 | 886.0
Cash and cash equivalents at end of fiscal year | 1,528.4 | 1,772.2 | 1,774.7
Supplemental cash flow disclosure: |  |  |
Cash paid for interest | 57.5 | 62.7 | 67.8
Cash paid for income taxes, net of tax refunds | 165.2 | 92.8 | 60.3
Non-cash investing and financing activities: |  |  |
Fair value of common stock issued to settle liability-classified restricted stock units | 2.7 | 28.7 | 23.5
Fair value of common stock issued related to business combination | $ 6.1 | $ 37.9 | $ 0.0

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