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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Operating activities    
Net income $ 146.4 $ 48.6
Adjustments to reconcile net income to cash provided by operating activities:    
Depreciation and amortization 52.5 41.6
Share-based compensation 39.0 35.2
Non-cash interest expense 1.9 1.5
Deferred income taxes (41.8) (9.3)
Other non-cash income and expenses (7.8) (13.7)
Changes in operating assets and liabilities:    
Accounts receivable, net (5.8) 76.6
Inventory (36.7) (59.6)
Prepaid and other assets 11.4 (13.4)
Operating lease right-of-use assets and liabilities, net (2.0) (0.7)
Accounts payable and accrued liabilities 109.6 86.7
Accrued payroll and related expenses (60.7) (39.3)
Deferred revenue and other liabilities 3.2 1.2
Net cash provided by operating activities 209.2 155.4
Investing activities    
Purchases of marketable securities (992.4) (809.6)
Proceeds from sale and maturity of marketable securities 1,121.8 697.6
Purchases of property and equipment (56.9) (74.7)
Other investing activities 2.3 0.0
Net cash provided by (used in) investing activities 74.8 (186.7)
Financing activities    
Net proceeds from issuance of common stock 13.4 12.3
Other financing activities (8.7) (1.1)
Net cash provided by financing activities 4.7 11.2
Effect of exchange rate changes on cash, cash equivalents and restricted cash (3.8) 1.1
Increase (decrease) in cash, cash equivalents and restricted cash 284.9 (19.0)
Cash, cash equivalents and restricted cash, beginning of period 567.5 643.3
Cash, cash equivalents and restricted cash, end of period 852.4 624.3
Reconciliation of cash, cash equivalents and restricted cash, end of period:    
Cash and cash equivalents 851.2 623.2
Restricted cash 1.2 1.1
Total cash, cash equivalents and restricted cash 852.4 624.3
Supplemental disclosure of non-cash investing and financing transactions:    
Acquisition of property and equipment included in accounts payable and accrued liabilities 40.7 55.8
Right-of-use assets obtained in exchange for operating lease liabilities 1.1 1.9
Right-of-use assets obtained in exchange for finance lease liabilities $ 7.4 $ 1.0