Fair Value (Tables)

6 Months Ended

Apr. 02, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis

Assets and liabilities recorded at fair value on a recurring basis consisted of the following (in millions):         

	As of April 2, 2021								As of October 2, 2020
			Fair Value Measurements								Fair Value Measurements
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Assets
Cash and cash equivalents*	$	1,059.9	$	1,034.9	$	25.0	$	—	$	566.7	$	561.2	$	5.5	$	—
U.S. Treasury and government securities	105.0		27.4		77.6		—		134.4		43.2		91.2		—
Corporate bonds and notes	254.0		—		254.0		—		276.8		—		276.8		—
Municipal bonds	4.7		—		4.7		—		2.1		—		2.1		—
Total	$	1,423.6	$	1,062.3	$	361.3	$	—	$	980.0	$	604.4	$	375.6	$	—