Fair Value Measurements - Not Recorded at Fair Value on a Recurring Basis Convertible Debt (Details) - Convertible Debt - Level 2 - USD ($) $ in Millions	Oct. 02, 2021	Jul. 03, 2021
Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	$ 1,195.8	$ 1,180.5
Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	1,822.1	1,815.4
2026 Notes | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	800.0	789.8
2026 Notes | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	1,151.3	1,146.1
2024 Notes | Carrying Amount
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	395.8	390.7
2024 Notes | Estimated Fair Value
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Convertible senior notes fair value	$ 670.8	$ 669.3