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Leases - Lease Obligations (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Leases [Abstract] |  |
Finance leases - ROU assets | $ 56.0 | $ 58.0
Finance leases - Accumulated depreciation | (28.1) | (27.3)
Operating leases - ROU assets | 138.4 | 133.5
Operating leases - Accumulated depreciation | (77.2) | (69.7)
Total lease assets | 89.1 | 94.5
Finance leases | (8.9) | (10.2)
Operating leases | (21.3) | (21.2)
Finance leases | (18.3) | (19.2)
Operating leases | (44.1) | (44.5)
Total lease liabilities | $ (92.6) | $ (95.1)

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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 https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Amount, before accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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