Condensed Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 101.4	$ 182.5
Foreign currency translation adjustments	27.3	23.2
Defined benefit pension plan	2.0	0
Other comprehensive income, before tax	29.3	23.2
Income tax expense related to defined benefit pension plan	(0.7)	0
Other comprehensive income, net of tax	28.6	23.2
Comprehensive income	130.0	205.7
Less: comprehensive income attributable to non-controlling interest	1.0	1.1
Comprehensive income attributable to controlling interest	$ 129.0	$ 204.6

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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