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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Operating activities    
Net loss $ (1,343) $ (971)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 104 115
Depreciation and amortization 59 39
Amortization/accretion of investments (11) (19)
Loss on equity investments, net 2 8
Other non-cash items 6 2
Changes in assets and liabilities:    
Accounts receivable, net 114 280
Prepaid expenses and other assets 54 46
Inventory 6 (8)
Right-of-use assets, operating leases 11 9
Accounts payable (120) (156)
Accrued liabilities 464 (381)
Deferred revenue 5 (29)
Operating lease liabilities (7) (5)
Other liabilities 26 33
Net cash used in operating activities (630) (1,037)
Investing activities    
Purchases of marketable securities (1,348) (1,764)
Proceeds from maturities of marketable securities 732 1,933
Proceeds from sales of marketable securities 602 688
Purchases of property, plant and equipment (62) (117)
Purchase of intangible asset 0 (10)
Net cash (used in) provided by investing activities (76) 730
Financing activities    
Proceeds from issuance of common stock through equity plans 19 3
Tax payments related to net share settlements on equity awards (2) (1)
Changes in financing lease liabilities 0 2
Net cash provided by financing activities 17 4
Effect of changes in exchange rates on cash and cash equivalents 1 0
Net decrease in cash, cash equivalents and restricted cash (688) (303)
Cash, cash equivalents and restricted cash, beginning of year 2,597 1,929
Cash, cash equivalents and restricted cash, end of period 1,909 1,626
Non-cash investing and financing activities    
Purchases of property and equipment included in accounts payable and accrued liabilities 35 50
Purchases of intangible asset included in accounts payable and accrued liabilities $ 74 $ 0