Goodwill and Other Intangible Assets - Components of Other Intangible Assets (Detail) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Intangible Assets by Major Class [Line Items] | ||
| Accumulated amortization | $ (146.3) | $ (132.6) |
| Total other intangible assets, net | 583.2 | 583.8 |
| Total other intangible assets, net | $ 436.9 | $ 451.2 |
| Amortizable - dealer/customer related and other | ||
| Intangible Assets by Major Class [Line Items] | ||
| Weighted-average useful life (years) | 19 years | 19 years |
| Cost | $ 342.5 | $ 342.5 |
| Accumulated amortization | (146.3) | (132.6) |
| Net | 196.2 | 209.9 |
| Non-amortizable - brand/trade names | ||
| Intangible Assets by Major Class [Line Items] | ||
| Non-amortizable—brand/trade names | $ 240.7 | $ 241.3 |
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- Definition Intangible Assets by Major Class [Line Items] No definition available.
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- Definition Useful life of finite-lived intangible asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated amortization of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of indefinite-lived intangible asset. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, before accumulated amortization, of finite- and indefinite-lived intangible assets and capitalized cost for software to be sold, leased, or marketed. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after accumulated amortization, of finite- and indefinite-lived intangible assets and capitalized cost for software to be sold, leased, or marketed. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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