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Derivatives and Hedging Activities - Derivatives and their location on the condensed consolidated balance sheets (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
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Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Derivative asset, notional amount | $ 17.6 | $ 0.0
Derivative liability, notional amount | 66.6 | 61.0
Interest Rate Swap |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Derivative liability, notional amount, financing component | 49.4 |
Interest Rate Swap | Derivatives not designated as hedging instruments | Other long-term assets |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Derivative asset, notional amount | 15.8 | 0.0
Derivative liability, notional amount | 0.0 | 0.0
Interest Rate Swap | Derivatives not designated as hedging instruments | Other long-term liabilities |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Derivative asset, notional amount | 0.0 | 0.0
Derivative liability, notional amount | 15.6 | 0.0
Interest Rate Swap | Derivatives in cash flow hedging relationships | Other long-term liabilities |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Derivative asset, notional amount | 0.0 | 0.0
Derivative liability, notional amount | 51.0 | 61.0
Interest Rate Cap | Derivatives in cash flow hedging relationships | Other long-term assets |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Derivative asset, notional amount | 1.8 | 0.0
Derivative liability, notional amount | $ 0.0 | $ 0.0

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- Definition Derivative Liability, Notional Amount, Financing Component + References No definition available. + Details
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- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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- Definition Nominal or face amount used to calculate payments on the derivative liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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