Intangible Assets by Asset Type (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,394.0	$ 2,413.4
Accumulated Amortization	1,225.2	1,085.4
Net Carrying Amount	1,168.8us-gaap_FiniteLivedIntangibleAssetsNet	1,328.0us-gaap_FiniteLivedIntangibleAssetsNet
Customer Relationships [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	1,859.7	1,860.8
Accumulated Amortization	1,012.1	872.8
Net Carrying Amount	847.6	988.0
Trade Name [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	421.0	421.0
Accumulated Amortization	152.0	130.9
Net Carrying Amount	269.0	290.1
Internally Developed Software [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	110.1	128.5
Accumulated Amortization	58.9	79.8
Net Carrying Amount	51.2	48.7
Disposal of Fully Amortized Definite-Lived Intangible Assets	41.7	0
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	3.2	3.1
Accumulated Amortization	2.2	1.9
Net Carrying Amount	$ 1.0	$ 1.2

Disposals of Fully Amortized Definite-Lived Intangible Assets

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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

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

+ References

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

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