Cash, Cash Equivalents and Short-term Investments - Summary of Cash, Cash Equivalents and Short-term Investments (Details) - USD ($) $ in Millions	Oct. 02, 2021	Jul. 03, 2021
Cash and cash equivalents:
Cash	$ 196.1	$ 128.3
Cash and cash equivalents	611.0	774.3
Short-term investments:
Amortized Cost	1,273.4	1,171.8
Gross Unrealized Gains	0.4	0.3
Gross Unrealized Losses	(0.2)	(0.4)
Fair Value	1,273.6	1,171.7
Certificates of deposit
Short-term investments:
Amortized Cost	28.5	28.5
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Fair Value	28.5	28.5
Commercial paper
Short-term investments:
Amortized Cost	124.8	136.7
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Fair Value	124.8	136.7
Corporate debt securities
Short-term investments:
Amortized Cost	671.3	626.0
Gross Unrealized Gains	0.3	0.3
Gross Unrealized Losses	(0.2)	(0.4)
Fair Value	671.4	625.9
Municipal bonds
Short-term investments:
Amortized Cost	2.0	1.0
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Fair Value	2.0	1.0
U.S. Agency securities
Short-term investments:
Amortized Cost	28.2	29.3
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Fair Value	28.2	29.3
U.S. Treasury securities
Short-term investments:
Amortized Cost	418.6	350.3
Gross Unrealized Gains	0.1	0.0
Gross Unrealized Losses	0.0	0.0
Fair Value	418.7	350.3
Commercial paper
Cash and cash equivalents:
Cash equivalents:		7.5
Corporate debt securities
Cash and cash equivalents:
Cash equivalents:		7.0
Money market funds
Cash and cash equivalents:
Cash equivalents:	204.7	$ 631.5
U.S. Treasury securities
Cash and cash equivalents:
Cash equivalents:	$ 210.2

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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