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Leases - Schedule of Components of Leases and Lease Costs (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Jun. 30, 2020
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Leases [Abstract] |  |
Operating lease right-of-use assets | $ 37.2 | $ 21.0
Operating Lease, Liability, Current | us-gaap:OperatingLeaseLiabilityCurrent | us-gaap:OperatingLeaseLiabilityCurrent
Operating lease liabilities | $ 10.5 | $ 6.5
Operating Lease, Liability, Noncurrent | us-gaap:OperatingLeaseLiabilityNoncurrent | us-gaap:OperatingLeaseLiabilityNoncurrent
Operating lease liabilities, long-term | $ 28.9 | $ 14.6
Operating Lease, Liability | us-gaap:OperatingLeaseLiability | us-gaap:OperatingLeaseLiability
Total operating lease liabilities | $ 39.4 | $ 21.1

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Indicates line item in statement of financial position that includes current operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918631-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Indicates line item in statement of financial position that includes noncurrent operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918631-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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