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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Oct. 03, 2025
Sep. 27, 2024
Statement of Cash Flows [Abstract]    
Net income $ 538,042 $ 381,406
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 22,109 21,161
Impairment of long-lived assets 0 64,238
Stock-based compensation 92,886 67,490
Non-cash lease expense 18,210 21,111
Acquired in-process research and development technology 6,999 31,250
Other, net (9,261) (9,247)
Changes in operating assets and liabilities:    
Trade receivables, net (44,207) (32,192)
Inventory (1,581) 2,691
Prepaid expenses and other assets (36,737) (63,068)
Accrued collaboration liabilities 1,544 (1,003)
Accounts payable and other liabilities (37,252) (24,129)
Net cash provided by operating activities 550,752 459,708
Cash flows from investing activities:    
Purchases of marketable securities (477,556) (622,522)
Proceeds from maturities and sales of marketable securities 833,527 651,148
Purchases of property, equipment and other, net (7,272) (24,458)
Acquired in-process research and development technology (25,499) (27,750)
Net cash provided by (used in) investing activities 323,200 (23,582)
Cash flows from financing activities:    
Payments for repurchases of common stock (689,893) (461,621)
Proceeds from issuance of common stock under the equity incentive plan and stock purchase plan 41,262 43,027
Taxes paid related to net share settlement of equity awards (66,395) (22,180)
Net cash used in financing activities (715,026) (440,774)
Net increase (decrease) in cash and cash equivalents 158,926 (4,648)
Cash and cash equivalents at beginning of period 217,374 262,994
Cash and cash equivalents at end of period 376,300 258,346
Non-cash operating activities:    
Right-of-use assets obtained in exchange for lease obligations $ 0 $ 15,313