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Derivatives and Hedging Activity - Additional Information (Detail) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2020
Interest Rate Contracts [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Settlement value of interest rate contracts hedges | $ 66.0 |
Notional value of contracts settled | 350.0 |
Derivative contracts settlement value net of tax. | $ 49.4 |
Scenario, Forecast [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Estimated pretax loss to be reclassified from accumulated other comprehensive loss into earnings |  | $ 5.5

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- Definition Derivative contracts settlement value. + References No definition available. + Details
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- Definition Derivative contracts settlement value net of tax. + References No definition available. + Details
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- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80845-113994 + Details
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