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Reportable Business Segments (Capital Expenditures by Segment) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Payments to Acquire Property, Plant, and Equipment | $ 250.2 | $ 101.1 | $ 106.8
Residential Heating and Cooling [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Payments to Acquire Property, Plant, and Equipment | 59.1 | 42.4 | 70.0
Commercial Heating and Cooling [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Payments to Acquire Property, Plant, and Equipment | 119.6 | 29.7 | 9.7
Corporate and Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Payments to Acquire Property, Plant, and Equipment | $ 71.5 | $ 29.0 | $ 27.1

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- Definition Amount of expenditure for addition to long-lived assets included in determination of segment assets by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Excludes expenditure for addition to financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 25 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-25 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482785/280-10-55-48 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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