Income Taxes (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current:
Federal	$ 148.4	$ 235.3	$ 204.9
State	14.3	19.5	23.3
Foreign	75.9	81.0	72.3
Current, Total	238.6	335.8	300.5
Deferred:
Federal	(2.6)	(54.9)	(17.4)
State	(0.9)	(2.0)	(3.1)
Foreign	(16.2)	(15.6)	0.8
Deferred, Total	(19.7)	(72.5)	(19.7)
Provision for income taxes	$ 218.9	$ 263.3	$ 280.8