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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of income tax expense (benefit) for continuing operations, discontinued operations, other comprehensive income, and items charged (credited) directly to shareholders' equity.

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-Publisher FASB
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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Apr. 02, 2016	Mar. 28, 2015	Apr. 02, 2016	Mar. 28, 2015	Jun. 27, 2015
Income Tax Disclosure [Abstract]
(Benefit from) provision for income taxes	$ 11.3	$ 4.8	$ 10.9	$ 19.1
Valuation Allowance [Line Items]
Unrecognized tax benefits	37.0		37.0		$ 37.4
Interest and penalties accrued	1.7		1.7
Unrecognized tax benefits that may be recognized during the next twelve months	0.1		0.1
Increase in Lumentum valuation allowance
Valuation Allowance [Line Items]
Onetime increase in valuation allowance immediately before the separation transaction			8.9
Continuing operations
Valuation Allowance [Line Items]
Tax expense (benefit) from discontinued operations	$ 7.6		$ (14.6)