Marketable Securities (Notes)

12 Months Ended

Oct. 02, 2020

Investments, Debt and Equity Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure

3.    MARKETABLE SECURITIES

The Company's portfolio of available-for-sale marketable securities consists of the following (in millions):

	Current				Noncurrent
Available-for-sale:	October 2, 2020		September 27, 2019		October 2, 2020		September 27, 2019
U.S. Treasury and government	$	129.4	$	34.2	$	5.0	$	20.0
Corporate bonds and notes	276.8		66.2		—		5.9
Municipal bonds	1.9		102.9		0.2		1.7
Total	$	408.1	$	203.3	$	5.2	$	27.6

The contractual maturities of noncurrent available-for-sale marketable securities were due within two years or less. There were gross unrealized gains of $0.3 million on U.S. Treasury securities and $0.2 million on corporate bonds and notes as of October 2, 2020, and $0.1 million in gross unrealized losses on municipal bonds as of September 27, 2019.