Cash, Cash Equivalents and Short-term Investments - Summary of Unrealized Losses (Details) - USD ($) $ in Millions	Mar. 30, 2024	Jul. 01, 2023
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
Fair Value, More Than 12 Months	$ 27.1	$ 184.0
Unrealized Losses, More Than 12 Months	(0.1)	(2.2)
Fair Value, Less Than 12 Months	395.6	887.1
Unrealized Losses, Less Than 12 Months	(1.8)	(5.6)
Gross Unrealized Losses	(1.9)	(7.8)
U.S. Agency securities
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
Fair Value, More Than 12 Months	3.5	39.6
Unrealized Losses, More Than 12 Months	0.0	(0.4)
Fair Value, Less Than 12 Months	89.2	170.6
Unrealized Losses, Less Than 12 Months	(0.4)	(1.3)
Gross Unrealized Losses	(0.4)	(1.7)
Certificates of deposit
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
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
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	13.1	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
Fair Value, More Than 12 Months	21.6	93.6
Unrealized Losses, More Than 12 Months	(0.1)	(1.2)
Fair Value, Less Than 12 Months	175.7	358.9
Unrealized Losses, Less Than 12 Months	(0.7)	(2.7)
Gross Unrealized Losses	(0.8)	(3.9)
U.S. government bonds
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
Fair Value, More Than 12 Months	2.0	50.8
Unrealized Losses, More Than 12 Months	0.0	(0.6)
Fair Value, Less Than 12 Months	117.6	221.4
Unrealized Losses, Less Than 12 Months	(0.7)	(1.4)
Gross Unrealized Losses	$ (0.7)	$ (2.0)