Cash, Cash Equivalents and Short-term Investments - Summary of Unrealized Losses (Details) - USD ($) $ in Millions	Jun. 29, 2024	Jul. 01, 2023
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair value, more than 12 months	$ 268.3	$ 184.0
Unrealized Losses, More Than 12 Months	(1.2)	(2.2)
Fair Value, Less Than 12 Months	171.5	887.1
Unrealized Losses, Less Than 12 Months	(0.3)	(5.6)
Gross Unrealized Losses	(1.5)	(7.8)
U.S. Agency securities
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair value, more than 12 months	62.3	39.6
Unrealized Losses, More Than 12 Months	(0.3)	(0.4)
Fair Value, Less Than 12 Months	12.6	170.6
Unrealized Losses, Less Than 12 Months	0.0	(1.3)
Gross Unrealized Losses	(0.3)	(1.7)
Certificates of deposit
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair value, more than 12 months		0.0
Unrealized Losses, More Than 12 Months		0.0
Fair Value, Less Than 12 Months		7.7
Unrealized Losses, Less Than 12 Months		0.0
Gross Unrealized Losses		0.0
Commercial paper
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair value, more than 12 months	0.0	0.0
Unrealized Losses, More Than 12 Months	0.0	0.0
Fair Value, Less Than 12 Months	28.6	128.5
Unrealized Losses, Less Than 12 Months	0.0	(0.2)
Gross Unrealized Losses	0.0	(0.2)
Corporate debt securities
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair value, more than 12 months	133.7	93.6
Unrealized Losses, More Than 12 Months	(0.5)	(1.2)
Fair Value, Less Than 12 Months	90.6	358.9
Unrealized Losses, Less Than 12 Months	(0.2)	(2.7)
Gross Unrealized Losses	(0.7)	(3.9)
U.S. government bonds
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair value, more than 12 months	72.3	50.8
Unrealized Losses, More Than 12 Months	(0.4)	(0.6)
Fair Value, Less Than 12 Months	39.7	221.4
Unrealized Losses, Less Than 12 Months	(0.1)	(1.4)
Gross Unrealized Losses	$ (0.5)	$ (2.0)