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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Operating activities    
Net loss $ (2,125) $ (1,796)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 224 245
Depreciation and amortization 122 96
Amortization/accretion of investments (21) (37)
Loss on equity investments, net 2 8
Other non-cash items 10 36
Changes in assets and liabilities:    
Accounts receivable, net 167 310
Prepaid expenses and other assets 70 (150)
Inventory (126) (122)
Right-of-use assets, operating leases 21 19
Accounts payable (128) (203)
Accrued liabilities 475 (395)
Deferred revenue 195 68
Operating lease liabilities (15) (10)
Other liabilities (27) (25)
Net cash used in operating activities (1,156) (1,956)
Investing activities    
Purchases of marketable securities (1,904) (3,059)
Proceeds from maturities of marketable securities 1,442 3,424
Proceeds from sales of marketable securities 814 1,059
Purchases of property, plant and equipment (99) (120)
Purchase of intangible asset 0 (10)
Net cash provided by investing activities 253 1,294
Financing activities    
Proceeds from issuance of common stock through equity plans 42 17
Tax payments related to net share settlements on equity awards (4) (1)
Changes in financing lease liabilities (7) (3)
Net cash provided by financing activities 31 13
Effect of changes in exchange rates on cash and cash equivalents (1) 1
Net decrease in cash, cash equivalents and restricted cash (873) (648)
Cash, cash equivalents and restricted cash, beginning of year 2,597 1,929
Cash, cash equivalents and restricted cash, end of period 1,724 1,281
Non-cash investing and financing activities    
Purchases of property and equipment included in accounts payable and accrued liabilities 36 47
Purchases of intangible asset included in accounts payable and accrued liabilities $ 74 $ 0