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Debt - Carrying Amounts of the Liability and Equity Components (Details) - USD ($) $ in Millions | Dec. 28, 2019 | Jun. 29, 2019 | May 29, 2018
--- | --- | --- | ---
Carrying amounts of the liability and equity components: |  |  |
Carrying amount of liability component | $ 589.8 | $ 578.8 |
Convertible Notes |  |  |
Carrying amounts of the liability and equity components: |  |  |
Unamortized discount of liability component | (89.5) | (99.8) |
Unamortized debt issuance cost | (5.7) | (6.4) |
Carrying amount of liability component | 589.8 | 578.8 |
Carrying amount of equity component | 136.8 | 136.8 |
Convertible Notes | 1.00% Senior Convertible Notes |  |  |
Carrying amounts of the liability and equity components: |  |  |
Principal amount of notes | $ 460.0 | 460.0 |
Interest rate on senior convertible notes | 1.00% |  |
Convertible Notes | 1.75% Senior Convertible Notes |  |  |
Carrying amounts of the liability and equity components: |  |  |
Principal amount of notes | $ 225.0 | $ 225.0 |
Interest rate on senior convertible notes | 1.75% |  | 1.75%

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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