Reportable Segments 2 Parentheticals (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Capital Expenditures [Abstract]
Increase Decrease Capital Accruals	$ 10.4	$ 7.9	$ 26.0	$ (7.9)