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Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Jul. 01, 2019 | Jun. 30, 2019
--- | --- | --- | ---
Leases [Abstract] |  |  |
Operating lease assets | $ 525.8 | $ 569.8 | $ 0.0
Finance lease assets (1) | 32.0 |  |
Total lease assets | 557.8 |  |
Current operating lease liabilities | 83.6 |  |
Operating lease liabilities | 465.6 | $ 506.8 | $ 0.0
Current finance lease liabilities | 1.8 |  |
Non-current finance lease liabilities | 32.1 |  |
Lease Liabilities, Total | 583.1 |  |
Finance Lease, Right of Use Asset, Accumulated Amortization | $ 8.7 |  |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + 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=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under finance 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=77888419&loc=SL77918627-209977 + Details
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