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Goodwill And Intangible Assets (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items] |  |
Goodwill | 1,321.7 us-gaap_Goodwill | $ 1,314.7 us-gaap_Goodwill
Franchise rights - indefinite-lived | 362.8 us-gaap_IndefiniteLivedFranchiseRights | 348.1 us-gaap_IndefiniteLivedFranchiseRights
Other intangibles | 12.6 us-gaap_FiniteLivedIntangibleAssetsGross | 12.6 us-gaap_FiniteLivedIntangibleAssetsGross
Intangible assets, gross | 375.4 us-gaap_IntangibleAssetsGrossExcludingGoodwill | 360.7 us-gaap_IntangibleAssetsGrossExcludingGoodwill
Less: accumulated amortization | (6.2)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (6.0)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Other intangible assets, net | 369.2 us-gaap_IntangibleAssetsNetExcludingGoodwill | $ 354.7 us-gaap_IntangibleAssetsNetExcludingGoodwill
Franchise Rights [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Date of annual goodwill and indefinite lived intangible assets impairment test | April 30 |
Goodwill [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Date of annual goodwill and indefinite lived intangible assets impairment test | April 30 |

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through a franchise arrangement having an indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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