Reportable Segments - Long-Lived Assets including Net Property and Equipment by Country (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 24, 2018
Long-Lived Assets by Location [Line Items]
Tangible long-lived assets	$ 625.2	$ 589.1
United States
Long-Lived Assets by Location [Line Items]
Tangible long-lived assets	558.6	508.3
China
Long-Lived Assets by Location [Line Items]
Tangible long-lived assets	61.8	76.1
Other
Long-Lived Assets by Location [Line Items]
Tangible long-lived assets	$ 4.8	$ 4.7