Financial Instruments and Derivative Financial Instruments (Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	$ 6.6	$ 8.0
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	4.5	2.4
Derivative Asset, Fair Value, Gross Asset	11.1	10.4
Derivative Instruments in Hedges, Liabilities, at Fair Value	5.2	4.3
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	3.9	2.9
Derivative Liability, Fair Value, Gross Liability	9.1	7.2
Designated as Hedging Instrument [Member] | Prepaid expenses and other [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Fair Value Hedge Asset at Fair Value	3.2	6.6
Foreign Currency Fair Value Hedge Liability at Fair Value	2.5	2.7
Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Fair Value Hedge Asset at Fair Value	0	0
Foreign Currency Fair Value Hedge Asset at Fair Value	0.7	1.4
Interest Rate Fair Value Hedge Liability at Fair Value	0	0
Foreign Currency Fair Value Hedge Liability at Fair Value	1.7	1.2
Designated as Hedging Instrument [Member] | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Fair Value Hedge Asset at Fair Value	2.7	0
Foreign Currency Fair Value Hedge Asset at Fair Value	0	0
Foreign Currency Fair Value Hedge Liability at Fair Value	0	0
Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Fair Value Hedge Asset at Fair Value	0	0
Interest Rate Fair Value Hedge Liability at Fair Value	0	0.4
Foreign Currency Fair Value Hedge Liability at Fair Value	1.0	0
Not Designated as Hedging Instrument [Member] | Prepaid expenses and other [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Fair Value Hedge Asset at Fair Value	2.9	1.7
Foreign Currency Fair Value Hedge Liability at Fair Value	1.6	1.2
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Fair Value Hedge Asset at Fair Value	0	0
Interest Rate Derivative Liabilities, at Fair Value	0	0.4
Foreign Currency Fair Value Hedge Asset at Fair Value	0.6	0.6
Foreign Currency Fair Value Hedge Liability at Fair Value	2.3	1.3
Not Designated as Hedging Instrument [Member] | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Fair Value Hedge Asset at Fair Value	0	0.1
Foreign Currency Fair Value Hedge Asset at Fair Value	1.0	0
Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	0	0
Foreign Currency Fair Value Hedge Liability at Fair Value	$ 0	$ 0