Cash, Cash Equivalents and Short-term Investments - Summary of Unrealized Losses (Details) - USD ($) $ in Millions	Oct. 02, 2021	Jul. 03, 2021
Cash and Cash Equivalents
Fair Value, Less than 12 months	$ 693.3	$ 617.5
Unrealized Losses
Unrealized Losses, Less than 12 months	(0.2)	(0.4)
U.S. Agency securities
Cash and Cash Equivalents
Fair Value, Less than 12 months		28.3
Unrealized Losses
Unrealized Losses, Less than 12 months		0.0
Certificates of deposit
Cash and Cash Equivalents
Fair Value, Less than 12 months		6.0
Unrealized Losses
Unrealized Losses, Less than 12 months		0.0
Commercial paper
Cash and Cash Equivalents
Fair Value, Less than 12 months	24.5	43.0
Unrealized Losses
Unrealized Losses, Less than 12 months	0.0	0.0
Corporate debt securities
Cash and Cash Equivalents
Fair Value, Less than 12 months	329.6	432.3
Unrealized Losses
Unrealized Losses, Less than 12 months	(0.2)	(0.4)
Municipal bonds
Cash and Cash Equivalents
Fair Value, Less than 12 months	1.0	1.0
Unrealized Losses
Unrealized Losses, Less than 12 months	0.0	0.0
U.S. government bonds
Cash and Cash Equivalents
Fair Value, Less than 12 months	338.2	106.9
Unrealized Losses
Unrealized Losses, Less than 12 months	$ 0.0	$ 0.0