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

Intangible Assets, Accumulated Amortization (Excluding Goodwill), Total.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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