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Goodwill And Identifiable Intangibles (Intangible Assets) (Details) - USD ($) $ in Millions | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Intangible Assets [Line Items] |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | $ 566.2 | $ 563.2
Amortizable intangible assets, Accumulated Amortization |  | (253.4) | (227.4)
Amortizable intangible assets, Net Book Value |  | 312.8 | 335.8
Total identifiable intangibles, Gross Carrying Amounts |  | 1,024.7 | 1,030.5
Total identifiable intangibles, Accumulated Amortization |  | (297.9) | (271.9)
Total identifiable intangibles, Net Book Value |  | 726.8 | 758.6
Trade Names |  |  |
Intangible Assets [Line Items] |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 315.2 | 316.7
Amortizable intangible assets, Accumulated Amortization |  | (93.3) | (83.7)
Amortizable intangible assets, Net Book Value |  | 221.9 | 233.0
Customer and contractual relationships |  |  |
Intangible Assets [Line Items] |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 245.2 | 241.0
Amortizable intangible assets, Accumulated Amortization |  | (158.3) | (142.3)
Amortizable intangible assets, Net Book Value |  | 86.9 | 98.7
Patents |  |  |
Intangible Assets [Line Items] |  |  |
Amortizable intangible assets, Gross Carrying Amounts |  | 5.8 | 5.5
Amortizable intangible assets, Accumulated Amortization |  | (1.8) | (1.4)
Amortizable intangible assets, Net Book Value |  | 4.0 | 4.1
Trade Names |  |  |
Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets, gross carrying amount |  | 458.5 | 467.3
Indefinite lived intangible asset accumulated amortization prior to the adoption of authoritative guidance | [1] | (44.5) | (44.5)
Indefinite-lived intangible assets, Net Book Value |  | $ 414.0 | $ 422.8
[1] | Accumulated amortization prior to the adoption of authoritative guidance on goodwill and other intangible assets, at which time further amortization ceased.

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