Income Taxes (Schedule Of U.S. Federal, State And Foreign Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
U.S. federal, Current	$ 92.7	$ 79.0	$ 93.8
State, Current	16.3	15.4	18.8
Foreign, Current	16.6	14.3	13.0
Current income tax expense (benefit)	125.6	108.7	125.6
U.S. federal, Deferred	48.7	34.0	18.2
State, Deferred	(3.3)	8.0	7.1
Foreign, Deferred	14.0	(3.1)	(2.2)
Deferred income tax expense (benefit)	59.4	38.9	23.1
Recorded tax expense	$ 185.0	$ 147.6	$ 148.7