Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net income	$ 646.3	$ 1,099.6
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	166.1	191.9
Depreciation and amortization expense	48.4	53.5
Intangible asset impairment charge	379.0	0.0
Deferred income taxes	(191.6)	(158.3)
Loss on equity securities	15.0	27.0
Other non-cash items, net	24.2	(36.4)
Changes in operating assets and liabilities:
Accounts receivable	(169.6)	(251.6)
Inventories	(167.1)	(80.1)
Prepaid expenses and other assets	(28.1)	99.2
Accounts payable	26.2	0.1
Accrued expenses	48.1	194.1
Other liabilities	22.0	167.6
Net cash provided by operating activities	818.9	1,306.6
Cash flows from investing activities:
Purchases of available-for-sale debt securities	(1,647.4)	(2,598.5)
Sales and maturities of available-for-sale debt securities	1,637.6	710.5
Purchases of property and equipment	(40.7)	(68.4)
Net payments related to finite-lived intangible assets	0.0	(180.0)
Other investing activities	(5.3)	0.0
Net cash used in investing activities	(55.8)	(2,136.4)
Cash flows from financing activities:
Issuances of common stock under benefit plans	16.7	16.9
Repurchases of common stock	(426.1)	(131.2)
Payments in connection with common stock withheld for employee tax obligations	(270.5)	(233.5)
Payments on finance leases	(1.3)	(13.2)
Other financing activities	0.8	3.5
Net cash used in financing activities	(680.4)	(357.5)
Effect of changes in exchange rates on cash	30.5	(15.6)
Net increase (decrease) in cash, cash equivalents and restricted cash	113.2	(1,202.9)
Cash, cash equivalents and restricted cash—beginning of period	4,572.2	10,372.3
Cash, cash equivalents and restricted cash—end of period	4,685.4	9,169.4
Supplemental disclosure of cash flow information:
Cash paid for income taxes	184.4	34.8
Cash paid for interest	$ 2.7	$ 10.0