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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Operating activities    
Net loss $ (2,454) $ (1,301)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 213 149
Depreciation and amortization 77 170
Amortization/accretion of investments (55) (29)
Loss (gain) on equity investments, net 35 (17)
Deferred income taxes 0 (530)
Other non-cash items 7 (12)
Changes in assets and liabilities, net of acquisition of business:    
Accounts receivable, net 729 1,153
Prepaid expenses and other assets 3 (142)
Inventory (197) 234
Right-of-use assets, operating leases (62) (9)
Accounts payable (199) (187)
Accrued liabilities (464) (633)
Deferred revenue 146 (979)
Income taxes payable (56) (1)
Operating lease liabilities 25 12
Other liabilities (11) (18)
Net cash used in operating activities (2,263) (2,140)
Investing activities    
Purchases of marketable securities (3,390) (1,281)
Proceeds from maturities of marketable securities 3,536 3,264
Proceeds from sales of marketable securities 1,999 2,427
Purchases of property, plant and equipment (378) (347)
Acquisition of business, net of cash acquired 0 (85)
Investment in convertible notes and equity securities 0 (23)
Net cash provided by investing activities 1,767 3,955
Financing activities    
Proceeds from issuance of common stock through equity plans 47 25
Repurchase of common stock, including excise tax 0 (1,154)
Changes in financing lease liabilities 1 (81)
Net cash provided by (used in) financing activities 48 (1,210)
Net (decrease) increase in cash, cash equivalents and restricted cash (448) 605
Cash, cash equivalents and restricted cash, beginning of year 2,928 3,217
Cash, cash equivalents and restricted cash, end of period 2,480 3,822
Non-cash investing and financing activities    
Purchases of property and equipment included in accounts payable and accrued liabilities 86 105
Right-of-use assets obtained through finance lease modifications and reassessments $ 0 $ 50