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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Operating activities        
Net income $ 283.8 $ 134.6 $ 569.0 $ 424.5
Adjustments to reconcile net income to cash provided by operating activities:        
Depreciation and amortization 63.6 55.3 186.6 159.9
Share-based compensation     124.6 127.1
Non-cash interest expense     5.6 5.6
Deferred income taxes 118.0 (11.6) 103.3 (68.1)
Net (gains) losses on equity investments (82.7) (0.4) (78.1) 1.4
Other non-cash income and expenses     (18.7) (64.7)
Changes in operating assets and liabilities:        
Accounts receivable, net     (95.7) (27.6)
Inventory     (45.9) (20.3)
Prepaid and other assets     (7.9) (13.8)
Operating lease right-of-use assets and liabilities, net     (4.5) (3.0)
Accounts payable and accrued liabilities     357.1 231.7
Accrued payroll and related expenses     56.6 (64.3)
Deferred revenue and other liabilities     (5.3) (0.3)
Net cash provided by operating activities     1,146.7 688.1
Investing activities        
Purchases of marketable securities     (1,246.6) (2,083.5)
Proceeds from sale and maturity of marketable securities     1,755.1 2,419.2
Purchases of property and equipment     (261.6) (234.2)
Purchases of non-marketable equity securities     (18.0) (6.2)
Other investing activities     0.5 0.9
Net cash provided by investing activities     229.4 96.2
Financing activities        
Net proceeds from issuance of common stock     28.1 28.2
Purchases of treasury stock     (187.2) (750.0)
Other financing activities     (5.1) (11.4)
Net cash used in financing activities     (164.2) (733.2)
Effect of exchange rate changes on cash, cash equivalents and restricted cash     17.7 3.8
Increase in cash, cash equivalents and restricted cash     1,229.6 54.9
Cash, cash equivalents and restricted cash, beginning of period     607.3 567.5
Cash, cash equivalents and restricted cash, end of period 1,836.9 622.4 1,836.9 622.4
Reconciliation of cash, cash equivalents and restricted cash, end of period:        
Cash and cash equivalents 1,835.7 621.2 1,835.7 621.2
Restricted cash 1.2 1.2 1.2 1.2
Total cash, cash equivalents and restricted cash $ 1,836.9 $ 622.4 1,836.9 622.4
Supplemental disclosure of non-cash investing and financing transactions:        
Acquisition of property and equipment included in accounts payable and accrued liabilities     46.4 77.6
Right-of-use assets obtained in exchange for operating lease liabilities     2.7 8.2
Right-of-use assets obtained in exchange for finance lease liabilities     $ 1.4 $ 11.8