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Marketable Securities
 6 Months Ended
Apr. 01, 2022
Investments, Debt and Equity Securities [Abstract]  
MARKETABLE SECURITIES MARKETABLE SECURITIES
The Company's portfolio of available-for-sale marketable securities consists of the following (in millions):    
CurrentNoncurrent
April 1,
2022		October 1,
2021		April 1,
2022		October 1,
2021
U.S. Treasury and government $7.1 $7.6 $3.4 $6.0 
Corporate bonds and notes103.4 117.0 — — 
Municipal bonds7.9 12.6 — 1.1 
Total marketable securities$118.4 $137.2 $3.4 $7.1 
The contractual maturities of noncurrent available-for-sale marketable securities were due within two years or less. Neither gross unrealized gains and losses nor realized gains and losses were material as of April 1, 2022, and October 1, 2021, respectively.