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Leases - Lease Expense and Cash Flow Information (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Leases [Abstract] |  |
Operating lease costs | $ 65.7 | $ 65.5
Finance lease costs: |  |
Amortization of leased assets | 39.9 | 38.8
Interest on lease liabilities | 48.6 | 42.7
Total finance lease costs | 88.5 | 81.5
Variable and short-term lease costs | 20.1 | 18.5
Total lease costs | 174.3 | 165.5
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash outflows from operating leases | 63.7 | 63.2
Operating cash outflows from finance leases | 45.8 | 41.7
Financing cash outflows from finance leases | 26.7 | 24.6
Right-of-use assets obtained in exchange for lease obligations: |  |
Operating leases | 60.1 | 57.3
Finance leases | $ 167.5 | $ 180.2

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- Definition Amount of interest expense on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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