Fair Value Measurements - Measured on a Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2022	Jul. 02, 2022
Assets:
Short-term investment, fair value disclosure	$ 1,088.3	$ 1,258.8
Cash held in bank	383.3	235.9
Certificates of deposit
Assets:
Short-term investment, fair value disclosure	27.6	28.3
Commercial paper
Assets:
Short-term investment, fair value disclosure	87.8	107.0
Corporate debt securities
Assets:
Short-term investment, fair value disclosure	499.5	532.5
Municipal bonds
Assets:
Short-term investment, fair value disclosure	1.0	1.0
Foreign government bonds
Assets:
Short-term investment, fair value disclosure	1.4
U.S. Agency securities
Assets:
Short-term investment, fair value disclosure	128.9	65.7
U.S. Treasury securities
Assets:
Short-term investment, fair value disclosure	342.1	524.3
Recurring basis
Assets:
Total assets, fair value disclosure	1,297.1	2,313.1
Recurring basis | Certificates of deposit
Assets:
Short-term investment, fair value disclosure	27.6	28.3
Recurring basis | Commercial paper
Assets:
Short-term investment, fair value disclosure	87.8	107.0
Recurring basis | Corporate debt securities
Assets:
Short-term investment, fair value disclosure	499.5	532.5
Recurring basis | Municipal bonds
Assets:
Short-term investment, fair value disclosure	1.0	1.0
Recurring basis | Foreign government bonds
Assets:
Short-term investment, fair value disclosure	1.4
Recurring basis | U.S. Agency securities
Assets:
Short-term investment, fair value disclosure	128.9	65.7
Recurring basis | U.S. Treasury securities
Assets:
Short-term investment, fair value disclosure	342.1	524.3
Recurring basis | Commercial paper
Assets:
Cash and cash equivalents, fair value disclosure	4.8	23.6
Recurring basis | Money market funds
Assets:
Cash and cash equivalents, fair value disclosure	180.1	1,000.2
Recurring basis | U.S. Agency securities
Assets:
Cash and cash equivalents, fair value disclosure		8.0
Recurring basis | U.S. Treasury securities
Assets:
Cash and cash equivalents, fair value disclosure	23.9	22.5
Recurring basis | Level 1
Assets:
Total assets, fair value disclosure	546.1	1,547.0
Recurring basis | Level 1 | Certificates of deposit
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 1 | Commercial paper
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 1 | Corporate debt securities
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 1 | Municipal bonds
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 1 | Foreign government bonds
Assets:
Short-term investment, fair value disclosure	0.0
Recurring basis | Level 1 | U.S. Agency securities
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 1 | U.S. Treasury securities
Assets:
Short-term investment, fair value disclosure	342.1	524.3
Recurring basis | Level 1 | Commercial paper
Assets:
Cash and cash equivalents, fair value disclosure	0.0	0.0
Recurring basis | Level 1 | Money market funds
Assets:
Cash and cash equivalents, fair value disclosure	180.1	1,000.2
Recurring basis | Level 1 | U.S. Agency securities
Assets:
Cash and cash equivalents, fair value disclosure		0.0
Recurring basis | Level 1 | U.S. Treasury securities
Assets:
Cash and cash equivalents, fair value disclosure	23.9	22.5
Recurring basis | Level 2
Assets:
Total assets, fair value disclosure	751.0	766.1
Recurring basis | Level 2 | Certificates of deposit
Assets:
Short-term investment, fair value disclosure	27.6	28.3
Recurring basis | Level 2 | Commercial paper
Assets:
Short-term investment, fair value disclosure	87.8	107.0
Recurring basis | Level 2 | Corporate debt securities
Assets:
Short-term investment, fair value disclosure	499.5	532.5
Recurring basis | Level 2 | Municipal bonds
Assets:
Short-term investment, fair value disclosure	1.0	1.0
Recurring basis | Level 2 | Foreign government bonds
Assets:
Short-term investment, fair value disclosure	1.4
Recurring basis | Level 2 | U.S. Agency securities
Assets:
Short-term investment, fair value disclosure	128.9	65.7
Recurring basis | Level 2 | U.S. Treasury securities
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 2 | Commercial paper
Assets:
Cash and cash equivalents, fair value disclosure	4.8	23.6
Recurring basis | Level 2 | Money market funds
Assets:
Cash and cash equivalents, fair value disclosure	0.0	0.0
Recurring basis | Level 2 | U.S. Agency securities
Assets:
Cash and cash equivalents, fair value disclosure		8.0
Recurring basis | Level 2 | U.S. Treasury securities
Assets:
Cash and cash equivalents, fair value disclosure	0.0	0.0
Recurring basis | Level 3
Assets:
Total assets, fair value disclosure	0.0	0.0
Recurring basis | Level 3 | Certificates of deposit
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 3 | Commercial paper
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 3 | Corporate debt securities
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 3 | Municipal bonds
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 3 | Foreign government bonds
Assets:
Short-term investment, fair value disclosure	0.0
Recurring basis | Level 3 | U.S. Agency securities
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 3 | U.S. Treasury securities
Assets:
Short-term investment, fair value disclosure	0.0	0.0
Recurring basis | Level 3 | Commercial paper
Assets:
Cash and cash equivalents, fair value disclosure	0.0	0.0
Recurring basis | Level 3 | Money market funds
Assets:
Cash and cash equivalents, fair value disclosure	0.0	0.0
Recurring basis | Level 3 | U.S. Agency securities
Assets:
Cash and cash equivalents, fair value disclosure		0.0
Recurring basis | Level 3 | U.S. Treasury securities
Assets:
Cash and cash equivalents, fair value disclosure	$ 0.0	$ 0.0