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Goodwill and Other Intangible Assets - Schedule of Goodwill and Intangible Assets (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Goodwill [Line Items] |  |
Goodwill | $ 1,206.6 | $ 1,225.8
Finite-lived: |  |
Gross | 487.8 | 494.9
Accumulated Amortization | 433.3 | 425.4
Net | 54.5 | 69.5
Indefinite-lived: |  |
Gross | 177.7 | 179.1
Total intangible assets |  |
Gross | 665.5 | 674.0
Accumulated Amortization | 433.3 | 425.4
Net | 232.2 | 248.6
Tradenames |  |
Indefinite-lived: |  |
Gross | 52.0 | 52.0
Reacquired franchise rights |  |
Indefinite-lived: |  |
Gross | 125.7 | 127.1
Customer relationships |  |
Finite-lived: |  |
Gross | 465.1 | 473.0
Accumulated Amortization | 415.5 | 403.8
Net | 49.6 | 69.2
Other |  |
Finite-lived: |  |
Gross | 22.7 | 21.9
Accumulated Amortization | 17.8 | 21.6
Net | $ 4.9 | $ 0.3

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