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Marketable Securities
 9 Months Ended
Jun. 27, 2025
Investments, Debt and Equity Securities [Abstract]  
MARKETABLE SECURITIES
3.    MARKETABLE SECURITIES

The Company’s portfolio of available-for-sale marketable securities consists of the following (in millions):    
CurrentNoncurrent
June 27, 2025September 27, 2024June 27, 2025September 27, 2024
U.S. Treasury and government securities$53.1 $39.0 $18.8 $11.1 
Corporate bonds and notes78.6 155.0 — 0.3 
Municipal bonds0.3 0.1 — — 
Total marketable securities$132.0 $194.1 $18.8 $11.4 
The contractual maturities of noncurrent available-for-sale marketable securities were within two years or less of issuance of the applicable securities. Neither gross unrealized gains and losses nor realized gains and losses were material as of June 27, 2025, or September 27, 2024.