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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Operating activities:    
Net income $ 547.4 $ 360.8
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and loss on disposal of property, plant, and equipment 104.2 87.7
Amortization of intangible assets 5.1 5.0
Loss (gain) on investments, accretion of discounts, and amortization of premiums on investments, net (5.9) 4.9
Deferred income taxes (7.2) 9.3
Share-based compensation expense 153.3 139.8
Amortization of contract acquisition assets 8.5 7.4
Changes in operating assets and liabilities, net of effects of acquisitions:    
Accounts receivable 2.2 16.9
Inventory (179.6) (127.1)
Prepaids and other assets (4.1) (27.3)
Accounts payable (7.5) 16.9
Accrued compensation and employee benefits (271.2) (140.6)
Deferred revenue (4.0) 24.2
Other liabilities (75.8) (6.5)
Net cash provided by operating activities 265.4 371.4
Investing activities:    
Purchase of investments (905.9) (3.5)
Proceeds from sales of investments 100.2 26.3
Proceeds from maturities of investments 919.1 744.4
Purchase of property, plant, and equipment (241.9) (194.1)
Net cash provided by (used in) investing activities (128.5) 573.1
Financing activities:    
Proceeds from issuance of common stock relating to employee stock plans 180.4 100.2
Taxes paid related to net share settlement of equity awards (226.6) (129.7)
Repurchase of common stock 0.0 (350.0)
Payment of deferred purchase consideration (0.5) (1.7)
Net cash used in financing activities (46.7) (381.2)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash 6.8 1.8
Net increase in cash, cash equivalents, and restricted cash 97.0 565.1
Cash, cash equivalents, and restricted cash, beginning of period 2,770.1 1,600.7
Cash, cash equivalents, and restricted cash, end of period $ 2,867.1 $ 2,165.8