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Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows for operating leases | $ 35.1 | $ 51.0
Operating cash flows for finance leases | 0.8 | 1.5
Financing cash flows for finance leases | 8.9 | 29.6
Right-of-use assets obtained in exchange for lease obligations: |  |
Operating leases | 16.5 | 16.6
Finance leases | $ 1.6 | $ 1.6

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- Definition Amount of cash outflow for principal payment on 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 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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