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Property and Equipment - Property and Equipment (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 215.5	$ 236.1
Accumulated depreciation and amortization	(131.2)	(133.1)
Property and equipment, net	84.3	103.0
Land [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	13.3	13.3
Building and Building Improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 52.7	52.7
Building and Building Improvements [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	35 years
Computer Equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 41.6	48.2
Computer Equipment [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	3 years
Computer Equipment [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	5 years
Manufacturing Equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 51.9	63.0
Manufacturing Equipment [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	1 year
Manufacturing Equipment [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	5 years
Furniture, Fixtures and Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 25.2	25.1
Furniture, Fixtures and Leasehold Improvements [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	3 years
Furniture, Fixtures and Leasehold Improvements [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	10 years
Capitalized Software [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 30.8	$ 33.8
Capitalized Software [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	3 years
Capitalized Software [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	7 years

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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