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Comprehensive Income (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Comprehensive Income
Foreign currency translation adjustments	$ 77.4		$ 77.4		$ 57.7
Realized and unrealized loss on derivative securities	(3.1)		(3.1)		(2.2)
Unrealized loss on investment securities	(6.6)		(6.6)		(5.5)
Accumulated other comprehensive income	67.7		67.7		50.0
Accumulated other comprehensive income (non-controlling interests)	(1.7)		(1.7)
Accumulated other comprehensive income (controlling interest)	66.0		66.0		50.0
Foreign currency translation adjustment	15.2	(34.6)	19.7	(18.2)
Change in net realized and unrealized loss on derivative securities, Net of Tax	(0.3)	(6.3)	(0.9)	(7.1)
Change in net unrealized loss on investment securities, Net of Tax	1.2	(40.5)	(1.1)	(46.2)
Other comprehensive income (loss)	16.1	(81.4)	17.7	(71.5)
Other comprehensive income (non-controlling interests)			(1.7)
Other comprehensive income (controlling interest)			$ 16.0

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Accumulated change in equity applicable to the non-controlling interest from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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