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Goodwill and Other Intangible Assets - Goodwill and Intangible Assets (Details) - USD ($) $ in Millions | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Goodwill [Line Items] |  |
Goodwill | $ 1,293.6 | $ 1,297.1
Finite-lived: |  |
Gross | 461.2 | 463.3
Accumulated Amortization | 373.8 | 367.7
Net | 87.4 | 95.6
Indefinite-lived: |  |
Gross | 150.8 | 150.7
Net | 150.8 | 150.7
Total intangible assets |  |
Gross | 612.0 | 614.0
Accumulated Amortization | 373.8 | 367.7
Net | 238.2 | 246.3
Goodwill, accumulated impairment loss | 513.4 | 513.4
Intangible Assets, Future Amortization Expense by Fiscal Year [Abstract] |  |
Estimated amortization expense, remainder of 2019 | 21.6 |
Estimated amortization expense, 2020 | 24.1 |
Estimated amortization expense, 2021 | 13.2 |
Estimated amortization expense, 2022 | 9.7 |
Estimated amortization expense, 2023 | 7.6 |
Estimated amortization expense, 2024 | 6.3 |
Tradenames |  |
Indefinite-lived: |  |
Gross | 52.0 | 52.0
Net | 52.0 | 52.0
Total intangible assets |  |
Indefinite-lived, accumulated impairment loss | 139.5 | 139.5
Reacquired franchise rights |  |
Indefinite-lived: |  |
Gross | 98.8 | 98.7
Net | 98.8 | 98.7
Customer relationships |  |
Finite-lived: |  |
Gross | 443.1 | 444.8
Accumulated Amortization | 357.5 | 351.7
Net | 85.6 | 93.1
Other |  |
Finite-lived: |  |
Gross | 18.1 | 18.5
Accumulated Amortization | 16.3 | 16.0
Net | $ 1.8 | $ 2.5

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