Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 534.5	$ 433.4
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	72.5	66.1
Amortization of deferred contract costs	94.2	78.0
Depreciation and amortization	39.8	35.8
Amortization of investment discounts	(4.8)	(10.3)
Other	(44.9)	(35.5)
Changes in operating assets and liabilities, net of impact of business combinations:
Accounts receivable—net	205.2	303.9
Inventory	23.6	(34.1)
Prepaid expenses and other current assets	62.8	3.4
Deferred contract costs	(112.4)	(91.3)
Deferred tax assets	11.0	(30.0)
Other assets	(5.4)	1.5
Accounts payable	(26.0)	24.6
Accrued liabilities	12.5	63.7
Accrued payroll and compensation	(20.6)	(8.2)
Deferred revenue	235.7	57.0
Other liabilities	(0.6)	5.3
Net cash provided by operating activities	1,077.1	863.3
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investments	(350.7)	(503.0)
Sales of investments	115.9	2.8
Maturities of investments	299.7	466.9
Purchases of property and equipment	(70.6)	(66.5)
Payments made in connection with business combinations, net of cash acquired	0.0	(11.2)
Other	0.0	0.2
Net cash used in investing activities	(5.7)	(110.8)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase and retirement of common stock	(823.0)	0.0
Repayment of senior notes	(500.0)	0.0
Proceeds from issuance of common stock	17.6	20.2
Taxes paid related to net share settlement of equity awards	(36.3)	(52.9)
Other	(1.2)	0.0
Net cash used in financing activities	(1,342.9)	(32.7)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0.0	0.9
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(271.5)	720.7
CASH AND CASH EQUIVALENTS—Beginning of period	2,495.3	2,875.9
CASH AND CASH EQUIVALENTS—End of period	2,223.8	3,596.6
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for income taxes—net	47.0	26.8
Operating lease liabilities arising from obtaining right-of-use assets	14.0	6.7
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Transfers of evaluation units and equipment from inventory to property and equipment	6.4	6.2
Liability for purchase of property and equipment	56.0	25.1
Liability incurred for repurchase of common stock	3.9	0.0
Excise tax payable on net stock repurchase	$ 25.2	$ 0.0