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Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 29, 2019 | Jun. 28, 2020 | Jun. 30, 2019 | Jun. 24, 2018
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | $ 349.7 | $ 349.7 |
Amortization or impairment of acquisition-related intangibles |  | 14.5 | 15.6 | $ 7.2
Lease asset and liability additions |  | 28.3 | 0.0 | 0.0
Wolfspeed Segment |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | 349.7 | 349.7 |
Inventory related to future Wafer Supply Agreement |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | 180.3 | 180.3 |
Accounting Standards Update 2016-02 |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Lease asset and liability additions | $ 0.9 |  |  |
Patent and licensing rights |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Amortization of intangible assets |  | 5.9 | 5.7 | 4.8
Investments in intangible assets |  | 4.4 | 3.3 | 2.5
Impairment charges related to patent portfolio |  | $ 1.2 | $ 0.6 | $ 0.5

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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