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Debt and Credit Arrangements - Interest Expense and Financing Cost Amortization (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Debt Instrument |  |  |  |
Interest expense excluding amortization | $ 6.5 | $ 7.8 | $ 21.2 | $ 18.5
Financing costs amortization | 1.1 | 1.0 | 3.2 | 2.0
Revolving Credit Facility |  |  |  |
Debt Instrument |  |  |  |
Interest expense excluding amortization | 3.8 | 5.6 | 13.2 | 11.4
Financing costs amortization | 0.9 | 0.8 | 2.6 | 1.2
Revolving Credit Facility | Term loan |  |  |  |
Debt Instrument |  |  |  |
Interest expense excluding amortization | 3.4 | 4.6 | 11.6 | 4.6
Revolving Credit Facility | Senior secured revolving credit facility |  |  |  |
Debt Instrument |  |  |  |
Interest expense excluding amortization | $ 0.4 | $ 1.0 | $ 1.6 | $ 6.8

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- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + Details
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- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph 8 -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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