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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
 [2]
Operating activities    
Net income $ 249.4 $ 222.2 [1]
Adjustments to reconcile net income to cash provided by operating activities:    
Depreciation and amortization 119.6 69.9
Share-based compensation 92.5 87.1
Non-cash interest expense 4.7 5.8
Realized (gain) loss on equity investment (0.2) 0.0
Deferred income taxes (53.6) 0.2
Other non-cash income and expenses 31.9 30.5
Changes in operating assets and liabilities:    
Accounts receivable, net (51.6) (90.6)
Inventory 43.6 (106.2)
Prepaid and other assets (81.2) (18.2)
Operating lease right-of-use assets and liabilities, net (6.1) (0.1)
Accounts payable and accrued liabilities 171.3 128.9
Accrued payroll and related expenses (14.0) 0.5
Deferred revenue and other liabilities 30.7 6.7
Net cash provided by operating activities 537.0 336.7
Investing activities    
Purchases of marketable securities (1,397.7) (1,540.2)
Proceeds from sale and maturity of marketable securities 1,387.8 2,165.3
Purchases of property and equipment (301.3) (309.0)
Acquisitions, net of cash acquired (3.9) (31.6)
Other investing activities (12.3) (4.5)
Net cash provided by (used in) investing activities (327.4) 280.0
Financing activities    
Net proceeds from issuance of common stock 22.5 20.3
Purchases of treasury stock (557.7) 0.0
Other financing activities (16.3) (9.1)
Net cash provided by (used in) financing activities (551.5) 11.2
Effect of exchange rate changes on cash, cash equivalents and restricted cash (12.6) (0.9)
Increase (decrease) in cash, cash equivalents and restricted cash (354.5) 627.0
Cash, cash equivalents and restricted cash, beginning of period 1,053.6 818.2
Cash, cash equivalents and restricted cash, end of period 699.1 1,445.2
Reconciliation of cash, cash equivalents and restricted cash, end of period:    
Cash and cash equivalents 698.1 1,444.3
Restricted cash 1.0 0.9
Total cash, cash equivalents and restricted cash 699.1 1,445.2
Supplemental disclosure of non-cash investing and financing transactions:    
Shares issued for conversions of 2023 Notes 35.9 94.5
Shares received under note hedge upon conversions of 2023 Notes (33.5) (65.1)
Acquisition of property and equipment included in accounts payable and accrued liabilities 60.3 30.2
Right-of-use assets obtained in exchange for operating lease liabilities (0.7) 12.2
Right-of-use assets obtained in exchange for finance lease liabilities $ 15.8 $ 6.3
[1] * We adjusted our 2021 amounts to reflect the simplified convertible instruments accounting guidance, which we adopted on a full retrospective basis. All periods presented have also been adjusted to reflect the four-for-one stock split. Refer to Note 1, “Organization and Significant Accounting Policies,” for further information.
[2] * We adjusted our 2021 amounts to reflect the simplified convertible instruments accounting guidance, which we adopted on a full retrospective basis. Refer to Note 1, “Organization and Significant Accounting Policies,” for further information.