Amount of tax expense (benefit) attributable to income (loss) from operations classified as a discontinued operation. Excludes tax expense (benefit) for gain (loss) on disposal and for provision for gain (loss) until disposal.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 20
-Section 45
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32672-109319

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5C
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721675-107760

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 3A
-URI http://asc.fasb.org/extlink&oid=109222160&loc=SL51721523-107759

Discontinued Operations - Additional Information (Details) - USD ($) shares in Millions, $ in Millions		12 Months Ended
	Aug. 01, 2015	Jul. 01, 2017	Jul. 02, 2016
Discontinued Operations
Stock conversion ratio in distribution	0.2
Cash contributions agreed to in spin-off	$ 137.6
Federal net operating losses utilized	1,000.0
Spinoff \| Lumentum
Discontinued Operations
Deferred tax assets	29.5
Deferred tax liabilities	1.0
Current income tax payables	3.3
Income tax receivable	1.3
Other long-term liabilities related to uncertain tax positions	$ 0.1
Income tax (benefit) provision from discontinued operations		$ (0.8)	$ 27.8
Cash taxes due at separation			6.2
Net income tax provision for discontinued operations related to the income tax intraperiod tax allocation rules			19.0
Transaction charges, advisory and consulting fees		$ 16.5	$ 21.4
Lumentum
Discontinued Operations
Retained ownership percentage	19.90%
Shares held in investment (in shares)	11.7
Minimum holding period for retained interest	6 months
Maximum holding period for retained interest	3 years
Lumentum
Discontinued Operations
Percentage of outstanding shares distributed	80.10%