| USD ($) $ in Millions | Apr 30, 2026 | Jan 31, 2026 | Oct 31, 2025 | Apr 30, 2025 | Jan 31, 2025 | Oct 31, 2024 | Apr 30, 2024 | Jan 31, 2024 | Oct 31, 2023 | Apr 30, 2023 | Jan 31, 2023 | Oct 31, 2022 | Apr 30, 2022 | Jan 31, 2022 | Oct 31, 2021 | Apr 30, 2021 | Jan 31, 2021 | Oct 31, 2020 | Apr 30, 2020 | Jan 31, 2020 | Oct 31, 2019 | Apr 30, 2019 | Jan 31, 2019 | Oct 31, 2018 | Apr 30, 2018 | Jan 31, 2018 | Oct 31, 2017 | Apr 30, 2017 | Jan 31, 2017 | Oct 31, 2016 | Apr 30, 2016 | Jan 31, 2016 | Oct 31, 2015 | Apr 30, 2015 | Jan 31, 2015 | Oct 31, 2014 | Apr 30, 2014 | Jan 31, 2014 | Oct 31, 2013 | Apr 30, 2013 | Jan 31, 2013 | Oct 31, 2012 |
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Cash flows from operating activities | ||||||||||||||||||||||||||||||||||||||||||
Net income | $ (177.0) | $ 432.0 | $ 334.0 | $ 262.1 | $ 267.3 | $ 350.7 | $ 278.8 | $ 1,746.9 | $ 194.2 | $ 107.8 | $ 84.2 | $ 20.0 | ||||||||||||||||||||||||||||||
Adjustments to reconcile net income to net cash provided by operating activities: | ||||||||||||||||||||||||||||||||||||||||||
Share-based compensation for equity-based awards | 643.0 | 301.0 | 370.0 | 325.9 | 320.5 | 294.3 | 263.5 | 272.0 | 271.0 | 271.0 | 283.3 | 266.0 | ||||||||||||||||||||||||||||||
Deferred income taxes | 24.0 | 5.0 | 9.0 | (124.7) | (179.4) | (137.4) | (127.0) | (1,691.3) | - | - | - | - | ||||||||||||||||||||||||||||||
Depreciation and amortization | 334.0 | 91.0 | 89.0 | 88.1 | 87.6 | 83.9 | 74.3 | 68.6 | 64.3 | 72.3 | 69.9 | 70.7 | ||||||||||||||||||||||||||||||
Gain related to facility exit | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Cease-use loss related to facility exit | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Amortization of deferred contract costs | 149.0 | 135.0 | 126.0 | 119.1 | 114.6 | 110.4 | 110.3 | 108.9 | 105.5 | 101.4 | 99.0 | 97.0 | ||||||||||||||||||||||||||||||
Change in fair value of convertible senior notes and capped calls | 38.0 | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Amortization of debt issuance costs | - | - | - | 0.2 | 0.3 | 0.5 | 0.8 | 1.1 | 1.0 | 1.8 | 1.7 | 1.8 | ||||||||||||||||||||||||||||||
Change in fair value of contingent consideration liability | (110.0) | 3.0 | (13.0) | 4.3 | 9.7 | 6.3 | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Reduction of operating lease right-of-use assets | 19.0 | 17.0 | 18.0 | 16.1 | 16.0 | 16.0 | 14.6 | 13.7 | 12.4 | 12.1 | 12.5 | 12.1 | ||||||||||||||||||||||||||||||
Amortization of operating lease right-of-use assets | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Amortization of investment premiums, net of accretion of purchase discounts | (1.0) | (45.0) | (7.0) | (9.4) | (10.8) | (15.0) | (15.6) | (16.2) | (14.7) | (20.1) | (16.0) | 1.7 | ||||||||||||||||||||||||||||||
Unrealized foreign currency exchange (gains) losses, net | 9.0 | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Loss on conversions of convertible senior notes | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Repayments of convertible senior notes attributable to debt discount | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Excess tax benefit from share-based compensation arrangements | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Change in fair value of preferred stock warrants | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Changes in operating assets and liabilities, net of effects of acquisitions: | ||||||||||||||||||||||||||||||||||||||||||
Accounts receivable, net | (423.0) | (758.0) | 1,622.0 | (454.5) | (362.6) | 1,485.7 | 180.9 | (482.2) | 1,050.2 | (165.3) | (39.8) | 904.4 | ||||||||||||||||||||||||||||||
Financing receivables, net | 172.0 | 50.0 | 125.0 | 112.5 | (21.4) | 10.7 | (369.4) | 0.3 | (43.6) | - | - | - | ||||||||||||||||||||||||||||||
Deferred contract costs | (204.0) | (124.0) | (82.0) | (134.9) | (114.6) | (78.9) | (125.9) | (96.0) | (63.3) | (97.6) | (92.8) | (60.1) | ||||||||||||||||||||||||||||||
Prepaid expenses and other assets | (2.0) | (12.0) | (33.0) | (21.1) | 92.5 | (3.6) | 1.3 | (8.1) | 54.0 | (336.7) | (118.5) | (41.1) | ||||||||||||||||||||||||||||||
Accounts payable | 10.0 | 42.0 | (2.0) | 85.3 | (63.4) | 96.8 | (67.8) | 47.7 | (0.4) | (37.0) | 1.7 | (1.0) | ||||||||||||||||||||||||||||||
Accrued compensation | 5.0 | 163.0 | (210.0) | 14.6 | 137.1 | (200.2) | (66.7) | 118.6 | (216.9) | (50.9) | 124.0 | (192.3) | ||||||||||||||||||||||||||||||
Accrued and other liabilities | (12.0) | 76.0 | (53.0) | 33.9 | 94.7 | (94.0) | 27.6 | 233.9 | (34.1) | 38.0 | (88.6) | (28.1) | ||||||||||||||||||||||||||||||
Deferred revenue | 397.0 | 178.0 | (522.0) | 311.2 | 168.8 | (416.6) | 349.2 | 372.1 | 146.4 | 535.3 | 374.0 | 185.6 | ||||||||||||||||||||||||||||||
Net cash provided by operating activities | 871.0 | 554.0 | 1,771.0 | 628.7 | 556.9 | 1,509.6 | 528.9 | 690.0 | 1,526.0 | 432.1 | 694.6 | 1,236.7 | ||||||||||||||||||||||||||||||
Cash flows from investing activities | ||||||||||||||||||||||||||||||||||||||||||
Purchases of investments | (496.0) | (524.0) | (1,401.0) | (1,089.1) | (1,072.1) | (660.0) | (475.1) | (1,156.7) | (854.7) | (742.1) | (1,606.5) | (2,112.8) | ||||||||||||||||||||||||||||||
Proceeds from sales of investments | 583.0 | 2,786.0 | 30.0 | 185.0 | 353.6 | 291.3 | 69.6 | 126.6 | 304.6 | 375.4 | 14.6 | 485.0 | ||||||||||||||||||||||||||||||
Proceeds from maturities of investments | 215.0 | 1,135.0 | 474.0 | 454.8 | 384.7 | 369.0 | 556.0 | 350.4 | 457.9 | 504.7 | 651.3 | 347.6 | ||||||||||||||||||||||||||||||
Business acquisitions, net of cash and restricted cash acquired | (1,985.0) | (2,576.0) | (2.0) | - | 0.5 | (500.0) | - | (610.6) | - | (18.9) | (185.6) | (0.0) | ||||||||||||||||||||||||||||||
Purchases of property, equipment, and other assets | (83.0) | (170.0) | (84.0) | (68.3) | (47.5) | (44.1) | (37.4) | (35.2) | (36.8) | (31.2) | (38.3) | (39.6) | ||||||||||||||||||||||||||||||
Net cash used in investing activities | (1,766.0) | 651.0 | (983.0) | (517.6) | (380.8) | (543.8) | 113.1 | (1,325.5) | (129.0) | 87.9 | (1,164.5) | (1,319.8) | ||||||||||||||||||||||||||||||
Cash flows from financing activities | ||||||||||||||||||||||||||||||||||||||||||
Proceeds from capped calls related to convertible senior notes | 10.0 | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Payments of initial public offering costs | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Repurchases of common stock | (1,000.0) | - | - | - | - | (0.0) | (500.0) | (0.0) | (66.7) | - | (250.0) | (22.7) | ||||||||||||||||||||||||||||||
Repayments of convertible senior notes | - | - | (0.0) | (150.9) | (112.4) | (319.0) | (661.8) | (126.3) | (46.0) | - | - | - | ||||||||||||||||||||||||||||||
Proceeds from sales of shares through employee equity incentive plans | 126.0 | 8.0 | 130.0 | 203.3 | 36.6 | 120.7 | 115.8 | 57.5 | 86.4 | 130.3 | 0.7 | 67.7 | ||||||||||||||||||||||||||||||
Payments for taxes related to net share settlement of equity awards | (16.0) | (108.0) | (1.0) | (5.3) | (156.4) | (21.4) | (3.4) | (3.8) | (15.5) | (2.1) | (1.5) | (13.9) | ||||||||||||||||||||||||||||||
Changes in restricted cash | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Proceeds from exercises of stock options | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Proceeds from employee stock purchase plan | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Excess tax benefit from share-based compensation arrangements | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Net cash used in financing activities | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Net increase (decrease) in cash and cash equivalents | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Payments of contingent consideration liability | (19.0) | (14.0) | (121.0) | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Repayments of convertible senior notes attributable to principal and equity component | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Payments for debt issuance costs | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Payments for deferred consideration related to business acquisitions | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Net cash used in financing activities | (899.0) | (114.0) | 8.0 | 47.1 | (232.2) | (219.7) | (1,049.4) | (72.6) | (41.8) | 128.2 | (250.8) | 31.1 | ||||||||||||||||||||||||||||||
Effect of exchange rate changes on cash, cash equivalents, and restricted cash | 2.0 | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Net increase in cash, cash equivalents, and restricted cash | (1,792.0) | 1,091.0 | 796.0 | 158.2 | (56.1) | 746.1 | (407.4) | (708.1) | 1,355.2 | 648.2 | (720.7) | (52.0) | ||||||||||||||||||||||||||||||
Supplemental disclosures of cash flow information | ||||||||||||||||||||||||||||||||||||||||||
Cash paid for income taxes | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Cash paid for interest | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Non-cash investing and financing activities | ||||||||||||||||||||||||||||||||||||||||||
Change in liability for early exercise of stock options, net of vested portion | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Purchase of property, equipment, and other assets not yet paid | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Property and equipment acquired through lease incentives | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||
Equity consideration for business acquisitions | (18,753.0) | (109.0) | - | - | 648.9 | (648.9) | - | (27.4) | - | - | - | - | ||||||||||||||||||||||||||||||
Contingent consideration for a business acquisition | - | - | $ 0.0 | - | $ (648.9) | - | - | - | - | - | - | - |