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Financial Instruments (Tables)
 6 Months Ended
Mar. 28, 2026
Financial Instruments [Abstract]  
Cash, Cash Equivalents and Marketable Securities by Significant Investment Category
The following tables show the Company’s cash, cash equivalents and marketable securities by significant investment category as of March 28, 2026 and September 27, 2025 (in millions):
March 28, 2026
Adjusted
Cost		Unrealized
Gains		Unrealized
Losses		Fair
Value		Cash and
Cash
Equivalents		Current
Marketable
Securities
Non-Current
Marketable
Securities
Cash$29,740 $— $— $29,740 $29,740 $— $— 
Level 1:
Money market funds6,588 — — 6,588 6,588 — — 
Mutual funds
821 128 (14)935 — 935 — 
Subtotal7,409 128 (14)7,523 6,588 935 — 
Level 2 (1):
U.S. Treasury securities18,650 14 (254)18,410 2,935 4,174 11,301 
U.S. agency securities7,483 — (112)7,371 2,923 2,470 1,978 
Non-U.S. government securities5,906 45 (493)5,458 — 576 4,882 
Certificates of deposit and time deposits3,263 — — 3,263 2,987 276 — 
Commercial paper3,628 — — 3,628 399 3,229 — 
Corporate debt securities48,111 83 (982)47,212 — 11,042 36,170 
Municipal securities122 — (1)121 — 95 26 
Mortgage- and asset-backed securities25,106 64 (1,301)23,869 — 138 23,731 
Subtotal112,269 206 (3,143)109,332 9,244 22,000 78,088 
Total
$149,418 $334 $(3,157)$146,595 $45,572 $22,935 $78,088 
September 27, 2025
Adjusted
Cost		Unrealized
Gains		Unrealized
Losses		Fair
Value		Cash and
Cash
Equivalents		Current
Marketable
Securities		Non-Current
Marketable
Securities
Cash$28,267 $— $— $28,267 $28,267 $— $— 
Level 1:
Money market funds5,272 — — 5,272 5,272 — — 
Mutual funds
679 177 (2)854 — 854 — 
Subtotal5,951 177 (2)6,126 5,272 854 — 
Level 2 (1):
U.S. Treasury securities16,074 56 (282)15,848 1,190 3,712 10,946 
U.S. agency securities5,269 — (149)5,120 251 2,456 2,413 
Non-U.S. government securities6,586 111 (424)6,273 — 855 5,418 
Certificates of deposit and time deposits917 — — 917 904 — 13 
Commercial paper100 — — 100 50 50 — 
Corporate debt securities47,210 266 (916)46,560 — 10,623 35,937 
Municipal securities207 — (2)205 — 119 86 
Mortgage- and asset-backed securities24,130 126 (1,252)23,004 — 94 22,910 
Subtotal100,493 559 (3,025)98,027 2,395 17,909 77,723 
Total
$134,711 $736 $(3,027)$132,420 $35,934 $18,763 $77,723 
(1)The valuation techniques used to measure the fair values of the Company’s Level 2 financial instruments, which generally have counterparties with high credit ratings, are based on quoted market prices or model-driven valuations using significant inputs derived from or corroborated by observable market data.
Notional Amounts of Outstanding Derivative Instruments
The notional amounts of the Company’s outstanding derivative instruments as of March 28, 2026 and September 27, 2025, were as follows (in millions):
March 28,
2026		September 27,
2025
Derivative instruments designated as accounting hedges:
Foreign exchange contracts$57,963 $62,647 
Interest rate contracts$10,625 $12,875 
Derivative instruments not designated as accounting hedges:
Foreign exchange contracts$96,341 $109,079