Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Goodwill [Abstract]
Goodwill, Gross	$ 1,028.5		$ 984.7
Accumulated Amortization	0		0
Goodwill, Net	1,028.5	[1]	984.7	[1]
Amortizable [Abstract]
Finite-Lived Intangible Assets, Gross	389.2		379.1
Finite-Lived Intangible Assets, Accumulated Amortization	203.5		176.1
Finite-Lived Intangible Assets, Net	185.7		203.0
Non-Amortizable [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill), Gross	152.1		151.9
Accumulated Amortization on Infinite Intangible Assets	0		0
Indefinite-Lived Intangible Assets (Excluding Goodwill)	152.1		151.9
Intangible Assets (Excluding Goodwill) [Abstract]
Intangible Assets, Gross (Excluding Goodwill), Total	541.3		531.0
Intangible Assets, Accumulated Amortization (Excluding Goodwill), Total	203.5		176.1
Intangible Assets, Net (Excluding Goodwill)	337.8		354.9
Trade Names [Member]
Non-Amortizable [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill), Gross	54.0	[2]	54.0	[2]
Accumulated Amortization on Infinite Intangible Assets	0	[2]	0	[2]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	54.0	[2]	54.0	[2]
Accumulated Impairment Loss	139.5		139.5
Reacquired Franchise Rights [Member]
Non-Amortizable [Abstract]
Indefinite-Lived Intangible Assets (Excluding Goodwill), Gross	98.1		97.9
Accumulated Amortization on Infinite Intangible Assets	0		0
Indefinite-Lived Intangible Assets (Excluding Goodwill)	98.1		97.9
Technology [Member]
Amortizable [Abstract]
Finite-Lived Intangible Assets, Gross	19.6		19.6
Finite-Lived Intangible Assets, Accumulated Amortization	19.6		19.6
Finite-Lived Intangible Assets, Net	0		0
Franchise Agreements [Member]
Amortizable [Abstract]
Finite-Lived Intangible Assets, Gross	18.0		18.0
Finite-Lived Intangible Assets, Accumulated Amortization	15.6		14.3
Finite-Lived Intangible Assets, Net	2.4		3.7
Customer Relationships [Member]
Amortizable [Abstract]
Finite-Lived Intangible Assets, Gross	337.9		328.0
Finite-Lived Intangible Assets, Accumulated Amortization	156.1		130.1
Finite-Lived Intangible Assets, Net	181.8		197.9
Other [Member]
Amortizable [Abstract]
Finite-Lived Intangible Assets, Gross	13.7		13.5
Finite-Lived Intangible Assets, Accumulated Amortization	12.2		12.1
Finite-Lived Intangible Assets, Net	$ 1.5		$ 1.4

[1] Balances were net of accumulated impairment loss of $513.4 as of both January 1, 2012 and September 30, 2012.

[2] Balances were net of accumulated impairment loss of $139.5 as of both September 30, 2012 and December 31, 2011.