Derivative Instruments and Hedging Activity (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013 Foreign Exchange Forward [Member] Cash Flow Hedging [Member]	Dec. 31, 2012 Foreign Exchange Forward [Member] Cash Flow Hedging [Member]	Sep. 30, 2013 Foreign Currency Denominated Debt, Net Investment Hedging [Member]	Dec. 31, 2012 Foreign Currency Denominated Debt, Net Investment Hedging [Member]
Derivative instruments and hedging activity for the period [Abstract]
Derivative, fair value			$ 26.6	$ 18.9	$ 95.2	$ 55.0
Impact of foreign exchange rates on debt instruments recorded in Other Comprehensive Income	$ 3.8	$ 2.4

Current period adjustment resulting from gains and losses on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity, net of tax effect.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section 45

-Paragraph 20

-Subparagraph (b),(c)

-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration