Fair Value Measurements (Changes In Fair Value Of Level 3 Contingent Earn-Out Consideration Obligation) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Fair Value Disclosures [Abstract]
Earn-Out Contingent Consideration Obligation Liability Fair Value Disclosure	$ 72.1		$ 72.1		$ 57.5
Balance at beginning of period	60.9	62.5	57.5	59.0
Remeasurement adjustment	13.7	1.1	14.3	1.5
Foreign currency translation adjustment	(2.5)	1.7	0.3	4.8
Balance at end of period	$ 72.1	$ 65.3	$ 72.1	$ 65.3