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Leases - Lease Obligations (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Leases [Abstract] |  |
Finance leases - ROU assets | $ 37.5 | $ 36.0
Finance leases - Accumulated depreciation | (15.3) | (14.9)
Operating leases - ROU assets | 195.5 | 203.1
Operating leases - Accumulated depreciation | (115.2) | (116.6)
Total lease assets | 102.5 | 107.6
Finance leases | (7.1) | (6.7)
Operating leases | (27.4) | (29.2)
Finance leases | (13.8) | (12.8)
Operating leases | (61.8) | (66.7)
Total lease liabilities | $ (110.1) | $ (115.4)

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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 -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + 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 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -SubTopic 20 -Topic 842 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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