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