Fair Value Measurements - Fair Value of Debt (Details) - USD ($) $ in Millions	Apr. 02, 2022	Jul. 03, 2021	May 29, 2018	Mar. 03, 2017
Convertible Notes
Debt details
Long-term Debt	$ 779.9	$ 947.6
3.75% Senior Convertible Notes | Senior Notes
Debt details
Stated interest rate	3.75%
3.75% Senior Convertible Notes | Convertible Notes
Debt details
Stated interest rate	3.75%
Long-term Debt	$ 374.8	0.0
1.00% Senior Convertible Notes | Convertible Notes
Debt details
Stated interest rate	1.00%			1.00%
Long-term Debt	$ 295.3	646.9
1.75% Senior Convertible Notes | Convertible Notes
Debt details
Stated interest rate	1.75%		1.75%
Long-term Debt	$ 109.8	300.7
Level 1 | Convertible Notes
Debt details
Long-term Debt	0.0	0.0
Level 1 | 3.75% Senior Convertible Notes | Convertible Notes
Debt details
Long-term Debt	0.0	0.0
Level 1 | 1.00% Senior Convertible Notes | Convertible Notes
Debt details
Long-term Debt	0.0	0.0
Level 1 | 1.75% Senior Convertible Notes | Convertible Notes
Debt details
Long-term Debt	0.0	0.0
Level 2 | Convertible Notes
Debt details
Long-term Debt	779.9	947.6
Level 2 | 3.75% Senior Convertible Notes | Convertible Notes
Debt details
Long-term Debt	374.8	0.0
Level 2 | 1.00% Senior Convertible Notes | Convertible Notes
Debt details
Long-term Debt	295.3	646.9
Level 2 | 1.75% Senior Convertible Notes | Convertible Notes
Debt details
Long-term Debt	109.8	300.7
Level 3 | Convertible Notes
Debt details
Long-term Debt	0.0	0.0
Level 3 | 3.75% Senior Convertible Notes | Convertible Notes
Debt details
Long-term Debt	0.0	0.0
Level 3 | 1.00% Senior Convertible Notes | Convertible Notes
Debt details
Long-term Debt	0.0	0.0
Level 3 | 1.75% Senior Convertible Notes | Convertible Notes
Debt details
Long-term Debt	$ 0.0	$ 0.0