Financial Instruments (Effect Of Derivative Instruments On Consolidated Financial Statements) (Details) (Foreign Exchange Contracts [Member], Cost Of Providing Services And Products Sold And Selling, General And Administrative [Member], USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Foreign Exchange Contracts [Member] | Cost Of Providing Services And Products Sold And Selling, General And Administrative [Member]
Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	$ 1.5	$ (17.0)	$ 0.7	$ (2.0)
Gain (Loss) Reclassified from Accumulated OCL into Income (Effective Portion)	$ 3.9	$ (0.3)	$ 6.1	$ (0.3)