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Derivative Financial Instruments and Hedging Activities (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) Subsidiary Contract | Dec. 31, 2020 USD ($) Contract | Dec. 31, 2019 USD ($) | Jul. 01, 2018 USD ($)
Derivative, Fair Value [Abstract] |  |  |  |
(Gains) losses in other non-operating income (deductions) | $ (5.6) | $ 5.3 | $ 8.2 |
Minimum [Member] |  |  |  |
Derivative, Fair Value [Abstract] |  |  |  |
Number of foreign subsidiaries in which portion of net investment is hedged | Subsidiary | 1 |  |  |
Foreign Exchange Forward [Member] |  |  |  |
Derivative, Fair Value [Abstract] |  |  |  |
Number of contracts | Contract | 0 | 0 |  |
(Gains) losses in other non-operating income (deductions) | $ 0.7 | $ 0.2 | $ 2.1 |
Cash Flow Hedges [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] |  |  |  |
Derivative, Fair Value [Abstract] |  |  |  |
Notional amount |  |  |  | $ 150.0
Cash Flow Hedges [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Non-Current Liabilities [Member] |  |  |  |
Derivative, Fair Value [Abstract] |  |  |  |
Fair value of derivative liability | 4.0 |  |  |
Net Investment Hedge [Member] | Designated as Hedging Instrument [Member] | Cross Currency Rate Swap [Member] |  |  |  |
Derivative, Fair Value [Abstract] |  |  |  |
Notional amount |  |  |  | $ 150.0
Net Investment Hedge [Member] | Designated as Hedging Instrument [Member] | Cross Currency Rate Swap [Member] | Other Assets and Deferred Charges [Member] |  |  |  |
Derivative, Fair Value [Abstract] |  |  |  |
Fair value of derivative asset | $ 8.2 |  |  |

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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: 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 2: 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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- Definition Fair value of all derivative assets designated as fair value hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959 + Details
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- Definition Fair value of all derivative liabilities designated as fair value hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959 + Details
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