Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Commitments And Contingencies [Abstract]
Authorized expenditures on incomplete projects for the purchase of property, plant and equipment	$ 135.8
Committed total of property, plant and equipment expenditure	41.9
Severance payments related to restructuring	27.2
Purchase commitment for outsourced services	184.6
Commitment to purchase natural gas	10.1
Operating lease commitments	496.4
Rent expense	152.7	212.5	215.0
Minimum non-cancelable sublease rentals aggregating	$ 39.8