Intangible Assets by Asset Type (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,413.4	$ 2,383.4
Accumulated Amortization	1,085.4	904.9
Net Carrying Amount	1,328.0	1,478.5
Customer Relationships [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	1,860.8	1,861.7
Accumulated Amortization	872.8	733.3
Net Carrying Amount	988.0	1,128.4
Trade Name [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	421.0	421.0
Accumulated Amortization	130.9	109.9
Net Carrying Amount	290.1	311.1
Internally Developed Software [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	128.5	97.4
Accumulated Amortization	79.8	60.1
Net Carrying Amount	48.7	37.3
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Gross Carrying Amount	3.1	3.3
Accumulated Amortization	1.9	1.6
Net Carrying Amount	$ 1.2	$ 1.7